[go: up one dir, main page]

WO2014198179A1 - Dispositif de recyclage basé sur la décalcification chimique et procédé pour le traitement de pointe d'eaux résiduaires de fabrication du papier - Google Patents

Dispositif de recyclage basé sur la décalcification chimique et procédé pour le traitement de pointe d'eaux résiduaires de fabrication du papier Download PDF

Info

Publication number
WO2014198179A1
WO2014198179A1 PCT/CN2014/078318 CN2014078318W WO2014198179A1 WO 2014198179 A1 WO2014198179 A1 WO 2014198179A1 CN 2014078318 W CN2014078318 W CN 2014078318W WO 2014198179 A1 WO2014198179 A1 WO 2014198179A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
ultrafiltration
decalcification
chemical
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/078318
Other languages
English (en)
Chinese (zh)
Inventor
张世文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boying Xiamen Science and Technology Co Ltd
Original Assignee
Boying Xiamen Science and Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201310235481.XA external-priority patent/CN103265133B/zh
Priority claimed from CN201310235520.6A external-priority patent/CN103253838B/zh
Application filed by Boying Xiamen Science and Technology Co Ltd filed Critical Boying Xiamen Science and Technology Co Ltd
Publication of WO2014198179A1 publication Critical patent/WO2014198179A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
    • C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the invention relates to a processing device and a method for treating waste water of papermaking, in particular to a recycling device and a method for treating waste water of papermaking based on chemical decalcification technology, electrochemical technology and membrane technology.
  • Pulp and papermaking wastewater refers to the cooking waste liquid (also known as black liquor, red liquor) produced by chemical pulping, the middle water produced during the washing and bleaching process, and the white water produced in the papermaking process.
  • the cooking waste liquid also known as black liquor, red liquor
  • 1 t of organic matter and 400 kg of alkali and sulfide are dissolved in black liquor
  • 1 t of sulfite pulp is produced with about 900 kg of organic matter and 200 kg of oxide (calcium, magnesium, etc.) and sulfide are dissolved in red.
  • the discharge of waste liquid into rivers not only seriously pollutes the water source, but also causes a large amount of waste of resources.
  • the paper industry is a traditional water user and one of the important sources of water pollution.
  • China's paper industry wastewater discharge and COD emissions rank first in all types of industrial emissions in China.
  • the paper industry has the most serious pollution to the water environment. It is not only the primary problem of pollution prevention and control in China's paper industry, but also the national industrial wastewater. The primary problem of compliance and water conservation.
  • China's county and county paper and paper products industrial wastewater discharge accounted for 18.6% of the country's total industrial emissions, of which treatment discharge standards accounted for 49.3% of the total discharge of paper industry wastewater, COD emissions from wastewater accounted for national industry 44.0% of total COD emissions. Therefore, how to eliminate the pollution of papermaking wastewater and make use of valuable resources in waste liquid is a work of great social and economic value, which should be taken seriously.
  • Papermaking wastewater has complex composition and poor biodegradability. It is a difficult industrial wastewater. Its sources and characteristics are:
  • the black liquor produced by alkaline pulping and the red liquor produced by acid pulping Most paper mills use alkaline pulping to produce black liquor.
  • the pollutants contained in the black liquor account for more than 90% of the total pollution discharge of the paper industry, and have high concentration and refractory characteristics. Its treatment has always been a major problem.
  • Lignin is a kind of non-toxic natural high-molecular substance. It has a wide range of uses as a chemical raw material, and polypentose can be used as livestock feed.
  • the mid-stage pulping wastewater refers to the wastewater discharged from the cooking slurry after black liquor extraction in the process of screening, washing and bleaching.
  • the color is dark yellow, accounting for 8% to 9% of the total pollution discharge of the paper industry.
  • the load is about 310kg.
  • the water concentration in the middle section is higher than that in domestic sewage.
  • the ratio of BOD to COD is between 0.20 and 0.35.
  • the biodegradability is poor, the organic matter is difficult to biodegrade and the treatment is difficult.
  • the organic matter in the middle water is mainly lignin, cellulose, organic acid, etc., mainly soluble COD.
  • the most serious environmental pollution is the chlorine-containing wastewater generated during the bleaching process, such as chlorinated bleaching wastewater and hypochlorite bleaching wastewater.
  • Hypochlorite bleaching wastewater mainly contains chloroform and contains more than 40 kinds of other organic chlorides, among which various chlorophenols are the most, such as dichlorophenol and trichlorophenol.
  • the bleaching waste liquid contains toxic dioxins, which are extremely toxic, posing a serious threat to the ecological environment and human health.
  • White water is the papermaking section wastewater, which comes from the papermaking process in the papermaking workshop.
  • White water mainly contains fine fibers, fillers, coatings and dissolved wood components, as well as added rubber compounds, wet strength agents, preservatives, etc., which are mainly insoluble COD, have low biodegradability, and have a certain preservative added. toxicity.
  • White water has a large amount of water, but its organic pollution load is much lower than that of cooking black liquor and middle-stage wastewater. Almost all paper mill paper mills now use partial or fully enclosed systems to reduce paper consumption, save power, increase white water reuse, and reduce excess white water emissions.
  • the methods used for papermaking wastewater treatment mainly include: physical filtration method, coagulation sedimentation method, adsorption method, advanced oxidation method, air floatation method, acid absorption method, catalytic oxidation method, biochemical method, etc., each method has Their respective advantages and disadvantages. Since the single treatment method is difficult to achieve the effect, in practical application, several methods are usually combined according to the actual situation of the wastewater to be treated.
  • the typical production process is to physically treat the papermaking wastewater through filtration and then flocculation and sedimentation. After the biochemical treatment, the standard is discharged.
  • Chinese patent CN101708927A discloses an advanced treatment method for papermaking wastewater with small investment, simple process, high pollutant removal rate and low operating cost, oxidative degradation + flocculation sedimentation + sand filtration. After treatment by this method, the COD was ⁇ 70 mg/L, the BOD5 was ⁇ 20 mg/L, and the SS was ⁇ 30 mg/L.
  • Chinese patent CN1420091 discloses an ecological treatment and resource recycling method for papermaking wastewater. It uses ecological engineering technology to adjust the ratio of BOD 5 : COD Cr in the sedimentation tank, and then enters the series anaerobic pond and facultative After digesting the pond and draining the COD Cr: N:P ratio in the regulating tank, multiple sets of parallel surface runoff wetlands are arranged through the water distribution system. The effluent is superior to the first-class standard for water pollutant discharge in the paper industry. The oxygen ponds are reserved and replenished with fresh water required for the adjustment tank, and returned to the surface runoff wetland for further reprocessing. The method overcomes the disadvantages of unbalanced nutrient structure and poor biodegradability of papermaking wastewater, and can realize the ecological treatment and resource recycling of papermaking wastewater stably and effectively.
  • Chinese patent CN101337752 discloses an advanced treatment process for papermaking wastewater, which comprises the steps of introducing a second-stage biochemically treated papermaking wastewater into a micro-aerated iron reduction bed, and charging iron scraps and papermaking wastewater in a micro-aerated iron reduction bed.
  • the reduction reaction is carried out in the micro-aerated iron reduction bed; the effluent treated in step 1 is introduced into the coagulation tank, and a coagulant and a coagulant are added to the coagulation tank to promote particle agglomeration in the water; after the step 2 is treated
  • the effluent is introduced into the sedimentation tank to separate the muddy water; the effluent from the sedimentation tank is introduced into the filter tank for filtration, and the filtered effluent is sterilized and disinfected, and then introduced into the reuse water pipe network; the sludge in the sedimentation tank and the reverse in the filter tank
  • the flushing sewage is introduced into the sludge concentration tank, and is transported by dewatering and then disposed of; and the overflow liquid in the dewatering filtrate and the sludge concentration tank is introduced into the coagulation tank for further treatment.
  • the invention has simple process, good decolorization effect and low cost.
  • the object of the present invention is to provide a chemical-based chemistry based on the problems of high cost, low efficiency, mostly treated wastewater, no deep treatment and recycling, and waste of water resources in the existing papermaking wastewater treatment method.
  • the decalcification technology, the electrochemical technology and the membrane technology are combined, the cost is low, and the efficiency is high, so that the recycled papermaking advanced treatment wastewater recycling device and method are realized.
  • the chemical decalcification-based papermaking advanced treatment wastewater recycling device of the present invention is provided with a chemical decalcification system, a filtration system, an electrolysis system, a membrane separation system, and a desalination system.
  • the chemical decalcification system is used to remove calcium and magnesium from the advanced wastewater treatment and reduce the hardness of the water.
  • the chemical decalcification system includes a primary decalcification reaction tank, a shut-off valve, a secondary decalcification reaction tank and a sedimentation tank.
  • the calcium reaction tank is connected with the inlet of the shut-off valve
  • the outlet of the shut-off valve is connected to the inlet of the secondary decalcification reaction tank
  • the outlet of the secondary decalcification reaction tank is connected with the inlet of the shut-off valve
  • the outlet of the shut-off valve is connected with the inlet of the sedimentation tank.
  • the outlet of the sedimentation tank is connected to the inlet of the filtration system.
  • the primary decalcification reaction tank and the secondary decalcification reaction tank in the chemical decalcification system are further provided with a dosing system, and the dosing system is provided with a dosing tank and a dosing pump, and the dosing tank outlet is connected with the dosing pump. Import, the outlet of the dosing pump is connected to the inlet of the first decalcification reaction tank or the secondary decalcification reaction tank.
  • the filtering system is used for filtering and separating the chemically decalcified wastewater, and the filtering system comprises a shut-off valve, a water supply pump, a filter, a backwashing pump and a cleaning liquid tank, and the inlet of the shut-off valve is connected to the outlet of the chemical decalcification system, and the water supply pump
  • the inlet of the inlet is connected to the outlet of the shut-off valve
  • the outlet of the water supply pump is connected to the inlet of the filter
  • the outlet of the filter is connected to the electrolysis system
  • the other is connected to the cleaning liquid tank by the backwashing pump.
  • the filtration in the filtration system is one of a multi-media filtration, a fiber filter, a sand filter, an active sand filter, and a filter cloth filter.
  • the electrolysis system is used for electrolytic treatment of the effluent after filtration and separation.
  • the electrolysis system is provided with a shut-off valve, a water supply pump and an electrolysis machine.
  • the inlet of the shut-off valve is connected to the outlet of the filter system, the inlet of the water supply pump is connected to the outlet of the shut-off valve, and the outlet of the water supply pump
  • the inlet of the electrolysis machine is connected to the inlet of the membrane separation system.
  • the electrolysis machine in the electrolysis system is provided with a power source and an electrolytic cell, and the electrodes in the electrolysis cell are graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inert electrode.
  • the surface layer of the nano catalytic inert electrode is coated with a metal oxide inert catalytic coating having a crystal grain of 10 to 35 nm, and the substrate of the nano catalytic inert electrode is a titanium plate or a plastic plate.
  • the membrane separation system rapidly removes particles, macromolecular colloids and microorganisms in the wastewater through the separation of the membrane to obtain papermaking purification wastewater.
  • the membrane separation system may be one of ultrafiltration and MBR.
  • the ultrafiltration system is provided with a shut-off valve, a water supply pump, an ultrafiltration membrane system, a backwashing pump, a dialysis water storage tank and a valve, an inlet of the shut-off valve is connected to an outlet of the electrolysis machine, and an outlet of the shut-off valve is connected to an inlet of the water supply pump for supply
  • the outlet of the water pump is connected to the outlet of the ultrafiltration membrane system
  • the dialysis water outlet of the ultrafiltration membrane system is connected to the dialysis water storage tank
  • the other is connected to the dialysis water storage tank by the backwashing pump
  • the concentrated water of the ultrafiltration membrane system is passed through the pipeline and the valve.
  • the ultrafiltration system has a molecular weight cutoff of 1000-100,000 MWCO, working conditions are: normal temperature to 45 ° C, and the ultrafiltration system is submerged ultrafiltration, column ultrafiltration, tubular ultrafiltration, and coil type.
  • One type of ultrafiltration or plate ultrafiltration the working pressure of immersion ultrafiltration is -1 to -50 kPa, and the working pressure of column ultrafiltration, tubular ultrafiltration, coil ultrafiltration and plate ultrafiltration is 3 to 300 kPa.
  • the MBR system is provided with a shut-off valve, an MBR reaction tank, an MBR membrane module, a blower, an aerator, a sewage pump, a water discharge pump, a primary reclaimed water storage tank, and the purified sewage obtained by the electrolysis system is connected to the MBR reaction tank through a water inlet pipe through a shut-off valve.
  • the MBR membrane module is immersed in the MBR reaction tank, aerated by a blower and a distributed aerator, the outlet of the MBR reaction tank is taken out of the inlet of the water pump, and the produced filtrate (water) is collected into the primary reclaimed water storage tank for use.
  • the desalted system is desalted to obtain high-purity reclaimed water for recycling in production, and a small amount of sludge is pumped and discharged through a sewage pump;
  • the membrane module of the MBR system is selected from a polyvinylidene fluoride hollow fiber membrane, a polypropylene hollow fiber membrane, and a poly One of a sulfone hollow fiber membrane, a polyethersulfone hollow fiber membrane, a polyacrylonitrile hollow fiber membrane, and a polyvinyl chloride hollow fiber membrane;
  • the MBR membrane module of the MBR system has a membrane pore diameter of 0.10 to 0.2 ⁇ m, and the working pressure is -1 ⁇ -50kPa, working temperature is 5 ⁇ 45 °C.
  • the ultrafiltration system or the MBR system further comprises a chemical cleaning system for cleaning the membrane module of the ultrafiltration or MBR system, the chemical cleaning system is provided with a cleaning liquid tank, a chemical cleaning pump and a shut-off valve, and an outlet of the cleaning liquid tank Connect the inlet of the chemical cleaning pump, and the outlet of the chemical cleaning pump is connected to the ultrafiltration membrane or MBR system through the shut-off valve.
  • the desalination system separates the dialysis water obtained by the membrane separation system into dialysis water and concentrated water through a desalting system, and the dialysis water enters the storage tank to obtain reclaimed water, and the concentrated water is returned to the electrolysis system, and the excess portion is discharged.
  • the desalination system is provided with a shut-off valve, a water supply pump, a desalination device, a reclaimed water storage tank, a shut-off valve, an outlet of the shut-off valve inlet membrane separation system, an outlet of the shut-off valve is connected to the inlet of the water supply pump, and the outlet of the water supply pump is connected to the desalination device.
  • the dialysis water outlet of the inlet and desalination device is connected to the shut-off valve and the reclaimed water storage tank in turn, and the concentrated water outlet of the desalination device flows through the shut-off valve to the electrolysis system.
  • the desalination system is one of nanofiltration, reverse osmosis, forward osmosis, electrodialysis, capacitive adsorption, ion exchange or filled electrodialysis (EDI).
  • the nanofiltration membrane module in the nanofiltration is a tubular membrane module, a coil membrane module or a flat membrane module, and the working pressure is 6 to 45 bar, the working temperature is 20 to 45 ° C, and the optimal temperature is 35 to 40. °C.
  • the reverse osmosis reverse osmosis membrane module is a roll membrane module, and the membrane material is an acetate membrane or a composite membrane in an organic membrane.
  • the membrane material has a molecular weight cutoff of 50-200 MWCO, and the inlet pressure can be 6.0-45.0 bar, and the pressure can be It is 4.5 to 33.5 bar.
  • the forward osmosis membrane module is one of a plate and frame membrane module, a roll membrane module, a tubular membrane module, and a bag membrane module.
  • the working conditions of the electrodialysis are an operating voltage of 0.5 to 3.0 kg/cm 2 , an operating voltage of 50 to 250 V, and a current intensity of 1 to 3 A.
  • the working condition of the capacitor adsorption is that the DC voltage is 110V/m ⁇ 2 ⁇ 10 6 V/m.
  • the ion exchanger used in the ion exchange is divided into two types: an inorganic ion exchanger and an organic ion exchanger.
  • the inorganic ion exchanger has a natural zeolite and a synthetic zeolite
  • the organic exchange resin is a strong acid cation exchange resin and a weak acid cation exchange resin.
  • the filled electrodialysis is a membrane separation and desalination process in which electrodialysis and ion exchange are organically combined, and the water injecting electrodialysis device requires a resistivity of 0.025 to 0.5 M ⁇ cm.
  • the chemical decalcification-based papermaking advanced treatment wastewater reuse method of the present invention comprises the following steps:
  • the effluent from the secondary sedimentation tank after the biochemical treatment of papermaking flows into the first-stage decalcification reaction tank through the pipeline, and the pH is adjusted to 8.5-9.5 by adding a proper amount of lime saturated solution under stirring by the dosing device to remove the false After the hardness (bicarbonate), it flows into the secondary decalcification reaction tank, and 100 ⁇ 600mg/L of Na 2 CO 3 is added to react the carbonate with calcium and magnesium ions to form a carbonate precipitate, and then add 2 ⁇ 10mg/L.
  • FeSO 4 then add Na 2 CO 3 to adjust the pH to 8-9, and finally add 1 ⁇ 3mg/L polyphenylene amide (PAM).
  • the chemically decalcified wastewater is pumped into a filtration system for filtration separation to further remove SS and colloid in water;
  • the filtered wastewater is pumped into the electrolysis machine to decompose organic macromolecules, remove the chroma and improve the biodegradability of the wastewater.
  • the voltage between the adjacent electrodes of the electrolysis machine is 2-12V, and the current density is 10 ⁇ 320mA. /cm 2 ;
  • the electrolyzed wastewater enters the membrane separation system, and the particles, macromolecular colloidal compounds and microorganisms in the wastewater are removed by membrane separation to obtain dialysis water and concentrated water, and the dialysis water enters the desalination treatment system, and the concentrated water is refluxed through the pipeline to the step (3) Recycling in the electrolysis machine;
  • the dialysis water obtained by membrane separation is pumped into the desalting system, and the dialysis water and concentrated water are separated by filtration through the desalination system, and the dialysis water enters the storage tank to obtain reclaimed water; a part of the concentrated water is returned to the electrolysis system, and the excess is discharged.
  • Step (2) Filtration The filtration system is one of a multi-media filtration, a fiber filter, a sand filter, an active sand filter, and a filter cloth filter.
  • the electrolysis machine is provided with a power source and an electrolytic cell, and the electrode materials in the electrolytic cell are graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inertia.
  • One of the materials; the surface layer of the nano catalytic inert electrode is coated with a metal oxide inert catalytic coating having a crystal grain of 10 to 35 nm, and the substrate of the nano catalytic inert electrode is a titanium plate or a plastic plate.
  • the membrane separation system of the step (4) is one of ultrafiltration or MBR.
  • the ultrafiltration molecular weight cutoff is 1000-50,000 MWCO, the working conditions are: normal temperature ⁇ 45 ° C, the working pressure of immersion ultrafiltration is -1 ⁇ -50 kPa, ultrafiltration is submerged ultrafiltration, column ultrafiltration, tubular super
  • One type of filtration, roll ultrafiltration or plate ultrafiltration, column ultrafiltration, tubular ultrafiltration, roll ultrafiltration and plate ultrafiltration have a working pressure of 3 to 300 kPa.
  • the membrane module of the MBR system is selected from the group consisting of a polyvinylidene fluoride hollow fiber membrane, a polypropylene hollow fiber membrane, a polysulfone hollow fiber membrane, a polyethersulfone hollow fiber membrane, a polyacrylonitrile hollow fiber membrane, and a polyvinyl chloride hollow fiber membrane.
  • the MBR membrane module of the MBR system has a membrane pore size of 0.10 to 0.2 ⁇ m, a working pressure of -1 to -50 kPa, and an operating temperature of 5 to 45 °C.
  • the desalination system of step (5) is one of nanofiltration, reverse osmosis, forward osmosis, electrodialysis, capacitive adsorption, ion exchange or filled electrodialysis (EDI).
  • the membrane module of the nanofiltration system is a tubular membrane module, a membrane membrane module or a flat membrane module, and the working pressure is 6 to 45 bar, the working temperature is 20 to 45 ° C, and the optimal temperature is 35 to 40 ° C. .
  • the reverse osmosis membrane system adopts a reverse osmosis membrane with a molecular weight cutoff of 50-200 MWCO, and the membrane module is a tubular membrane module or a membrane membrane module, the inlet pressure can be 6.0-35.0 bar, and the outlet pressure can be 4.5-33.5 bar.
  • the forward osmosis membrane module is one of a plate and frame membrane module, a roll membrane module, a tubular membrane module, and a bag membrane module.
  • the working condition of the electrodialysis is an operating voltage pressure of 0.5 to 3.0 kg/cm 2
  • the operating voltage is 50-250V, and the current intensity is 1 ⁇ 3A.
  • the operating condition of the capacitor adsorption is that the DC voltage is 110V/m to 2 ⁇ 10 6 V/m.
  • the ion exchanger used in the ion exchange is divided into two types: an inorganic ion exchanger and an organic ion exchanger.
  • the inorganic ion exchanger has a natural zeolite and a synthetic zeolite, and the organic exchange resin is a strong acid cation exchange resin and a weak acid cation exchange resin.
  • the filled electrodialysis is a membrane separation and desalination process in which electrodialysis and ion exchange are organically combined, and the water injecting electrodialysis device requires a resistivity of 0.025 to 0.5 M ⁇ cm.
  • the invention not only overcomes the defects of excessive filtration filtration treatment or adsorption treatment, but also overcomes the defects of the conventional papermaking wastewater treatment method, the waste water pollution environment and the like, and the existing papermaking advanced treatment wastewater. Purification and recycling. Compared with the prior art, it has the following outstanding advantages:
  • the carbonate is precipitated by reacting the carbonate with the calcium and magnesium ions through a secondary decalcification reaction tank, and then
  • the coagulant such as FeSO 4 and polyphenylene amide (PAM) flocculates with each other, aggregates into coarse squid granules, and settles in the sedimentation tank, finally effectively removing high concentration of calcium and magnesium ions in the papermaking advanced treatment wastewater and reducing
  • the hardness of the water prevents the equipment from scaling and ensures smooth and stable operation of the subsequent process.
  • the particles and macromolecular colloidal compounds in the wastewater are further removed, thereby creating good water quality conditions for the subsequent process, and further decomposing the pollutants in the water through the oxidative decomposition of microorganisms in the MBR system.
  • indicators such as SS, chromaticity, and pollutants are effectively removed.
  • the invention relates to the papermaking advanced treatment wastewater, which refers to the wastewater from the secondary sedimentation tank after the traditional filtration and flocculation treatment of the papermaking wastewater, that is, the wastewater that meets the discharge standard of the third grade or above.
  • FIG. 1 is a schematic view showing the structure of an ultrafiltration system for membrane separation of a papermaking advanced treatment wastewater reuse device based on chemical decalcification;
  • FIG. 2 is a schematic structural view of a membrane separation using a chemical decalcification method for a papermaking advanced treatment wastewater reuse device according to the present invention
  • Figure 3 is a schematic view showing the structure of the dosing system of the present invention.
  • the invention is a design of a purification and reuse device for wastewater after deep treatment of papermaking, which is completed after in-depth systematic comparison research on the composition, properties and existing treatment schemes of the existing papermaking advanced treatment wastewater, which is composed of a chemical decalcification system. , filtration system, electrolysis system, membrane separation system and desalination system.
  • the chemical decalcification-based papermaking advanced treatment wastewater recycling device of the present invention comprises:
  • the chemical decalcification system is used to remove calcium and magnesium from the advanced wastewater treatment and reduce the hardness of water.
  • the chemical decalcification system has a primary decalcification reaction tank 11, a shut-off valve 12, and a secondary decalcification reaction tank. 13.
  • the shut-off valve 14 and the sedimentation tank 15, the primary decalcification reaction tank 11 is connected to the inlet of the shut-off valve 12, the outlet of the shut-off valve 12 is connected to the inlet of the secondary decalcification reaction tank 13, and the outlet of the secondary decalcification reaction tank 13 Coupled with the inlet of the shut-off valve 14, the outlet of the shut-off valve 14 is coupled to the inlet of the settling tank 15, and the outlet of the settling tank 15 is connected to the inlet of the filtration system.
  • the dosing system is used for adding decalcifying agent and coagulant to the wastewater, and the dosing system is provided with a lime dosing tank 16, a dosing pump 161, a Na 2 CO 3 dosing tank 17,
  • the outlet of the lime dosing tank 16 is connected to the inlet of the dosing pump 161, and the outlet of the dosing pump 161 is connected
  • the outlet of the Na 2 CO 3 dosing tank 17 is connected to the inlet of the dosing pump 171, the outlet of the dosing pump 171 is connected to the inlet of the secondary decalcification reaction tank 13;
  • the FeSO 4 dosing tank The outlet of 18 is connected to the inlet of the dosing pump 181, the outlet of the dosing pump 181 is connected to the inlet of the secondary decalc
  • Filtration system the filtration system is used for filtering and separating the chemically decalcified wastewater.
  • the filtration system is provided with a shut-off valve 21, a water supply pump 22, a filter 23, a shut-off valve 24, a backwash pump 25 and a cleaning liquid tank 26;
  • the inlet of 21 is connected to the outlet of the chemical decalcification system, the inlet of the water supply pump 22 is connected to the outlet of the shut-off valve 21, the outlet of the water supply pump 22 is connected to the inlet of the filter 23, the outlet of the filter 23 is connected to the electrolysis system, and the other is sequentially
  • the backwash pump 25 is connected to the wash tank 26.
  • Electrolysis system The electrolysis system is used for electrolytic treatment of the effluent after filtration and separation.
  • the electrolysis system is provided with a shut-off valve 31, a water supply pump 32 and an electrolysis machine 33; the inlet of the shut-off valve 31 is externally connected to the discharge port of the filter system, and the inlet of the water supply pump 32 is connected.
  • the outlet of the water supply pump 32 is connected to the inlet of the electrolysis machine 33, and the outlet of the electrolysis machine 33 is coupled to the inlet of the membrane separation system.
  • Membrane Separation System is used to rapidly remove particles, macromolecular colloids and microorganisms in wastewater by separation of membranes to obtain papermaking purification wastewater.
  • the membrane separation system can be one of ultrafiltration and MBR.
  • the ultrafiltration system is provided with a shutoff valve 41, a water supply pump 42, an ultrafiltration membrane system 43, a backwash pump 44, a shutoff valve 45, a dialysis water storage tank 46, and a valve 47, and an inlet electrolysis machine 33 of the shutoff valve 41.
  • the outlet of the shut-off valve 41 is connected to the inlet of the water supply pump 42
  • the outlet of the water supply pump 42 is connected to the outlet of the ultrafiltration membrane system 43
  • the dialysis water outlet of the ultrafiltration membrane system 43 is sequentially dialyzed by the backwash pump 44 and the shut-off valve 45.
  • the water storage tank 46, the concentrated water of the ultrafiltration membrane system 43 is returned to the electrolysis system via valve 47 for reuse.
  • the MBR system is provided with a shutoff valve 41, an MBR membrane module 42, a blower 43, an aerator 44, an MBR reaction tank 45, a sewage pump 46, an outlet pump 47, and a primary reclaimed water storage tank 48.
  • the inlet of the shutoff valve 41 is connected to the outlet of the electrolysis machine 33, and the outlet of the shutoff valve 41 sequentially passes through the MBR reaction tank 45 and the outlet water pump 47 to enter the primary reclaimed water storage tank 48.
  • the chemical cleaning system is used to clean the ultrafiltration or MBR system.
  • the chemical cleaning system is provided with a cleaning liquid tank 51, a chemical cleaning pump 52 and a shut-off valve 53, and the outlet of the cleaning liquid tank 51 is connected to the chemical cleaning pump 52.
  • the inlet of the chemical cleaning pump 52 is connected to the ultrafiltration or MBR system via a shut-off valve 53.
  • Desalination system pumps the dialysis water obtained by the membrane separation system into the desalination system, and separates the dialysis water and the concentrated water through the desalination system.
  • the dialysis water enters the storage tank to obtain the reclaimed water; a part of the concentrated water is returned to the electrolysis system, and the excess is discharged.
  • the desalination system may be one of nanofiltration, reverse osmosis, forward osmosis, electrodialysis, capacitive adsorption, ion exchange or filled electrodialysis (EDI).
  • the desalination system is provided with a shutoff valve 61, a water supply pump 62, a desalination device 63, a shutoff valve 64, a reclaimed water storage tank 65, and a shutoff valve 66.
  • the inlet of the shutoff valve 61 is connected to the outlet of the dialysis water storage tank, and the outlet of the shutoff valve 61 is sequentially passed through the water supply pump 62 and the desalination device 63.
  • the dialysis water outlet of the desalination device 63 is connected to the inlet of the reclaimed water storage tank 65 via the shutoff valve 64.
  • the reflux concentrated water outlet of the desalination device 63 is returned to the electrolysis system via a shutoff valve 66.
  • the water quality index of the papermaking advanced treatment wastewater is determined as shown in Table 1.
  • Serial number project unit measured value Serial number project unit measured value
  • Serial number project unit measured value 1 COD Cr Mg/L 150 4 Chroma 100 2 SS Mg/L 120 5 Ca Mg/L 400 3 Conductivity ⁇ S/cm 1600 6 hardness Mmmol/L 9.9
  • the effluent from the secondary settling tank ie, the papermaking advanced treatment wastewater
  • the primary decalcification reaction tank 11 flows into the primary decalcification reaction tank 11 through the pipeline, and the pH is adjusted to 8.5 by adding a proper amount of lime saturated solution under stirring by the dosing device to remove the pseudo hardness.
  • the chemically decalcified wastewater is pumped into a filtration system for filtration separation to further remove SS and colloid in water;
  • the above filtration is multi-media filtration.
  • the filtration may be one of a multi-media filtration, a fiber filter, a sand filter, an active sand filter, and a filter cloth filter.
  • the filtered wastewater is pumped into the electrolysis machine 33 for electrolysis to degrade the organic macromolecules, remove the chromaticity, and improve the biodegradability of the wastewater.
  • the voltage between the adjacent electrodes of the electrolysis machine 33 is 2V, and the current density is 200 mA/cm. 2 ;
  • the electrolyzed wastewater enters the membrane separation system, and the particles, macromolecular colloidal compounds and microorganisms in the wastewater are removed by membrane separation to obtain dialysis water and concentrated water, and the dialysis water enters the desalination treatment system, and the concentrated water is refluxed through the pipeline to the step (3) Recycling in the electrolysis machine 33;
  • the membrane separation system is an MBR system.
  • the membrane module of the MBR system is selected from the group consisting of a polyvinylidene fluoride hollow fiber membrane, a polypropylene hollow fiber membrane, a polysulfone hollow fiber membrane, a polyethersulfone hollow fiber membrane, a polyacrylonitrile hollow fiber membrane, and a polyvinyl chloride hollow fiber membrane.
  • the membrane pore size of the MBR membrane module is 0.10-0.2 ⁇ m, the working pressure is -1 to -50 kPa, and the working temperature is 5 to 45 °C.
  • the dialysis water obtained by membrane separation is pumped into the desalting system, and the dialysis water and concentrated water are separated by filtration through the desalination system, and the dialysis water enters the storage tank to obtain reclaimed water; a part of the concentrated water is returned to the electrolysis system, and the excess is discharged.
  • the desalination system is a reverse osmosis system.
  • the reverse osmosis membrane system adopts a reverse osmosis membrane having a molecular weight cutoff of 50 to 200 MWCO, and the membrane module is a tubular membrane module or a membrane module, the inlet pressure can be 6.0 to 35.0 bar, and the pressure can be 4.5 to 33.5 bar.
  • the water quality indicators of reclaimed water were determined as shown in Table 2.
  • Serial number project unit measured value Serial number project unit measured value 1 COD Cr Mg/L 8 4 Chroma 8 2 SS Mg/L ⁇ 1 5 Ca Mg/L 45 3 Conductivity ⁇ S/cm 80 6 hardness Mmmol/L 1.1
  • the water quality index of the papermaking advanced treatment wastewater is determined as shown in Table 3.
  • Serial number project unit measured value Serial number project unit measured value 1 COD Cr Mg/L 100 4 Chroma 150 2 SS Mg/L 120 5 Ca Mg/L 150 3 Conductivity ⁇ S/cm 1800 6 hardness Mmmol/L 4
  • the effluent from the secondary settling tank (ie, the papermaking advanced treatment wastewater) flows into the first-stage decalcification reaction tank 11 through the pipeline, and the pH is adjusted to 9 by adding a proper amount of lime saturated solution under stirring by the dosing device to remove the pseudo hardness.
  • (bicarbonate) it flows into the secondary decalcification reaction tank 13, and 100 mg/L of Na 2 CO 3 is added to react the carbonate with the calcium and magnesium ions to form a carbonate precipitate, and then 2 mg/L of FeSO 4 is added , and then Adding Na 2 CO 3 to adjust the pH to 8 and finally adding 3 mg/L of polyphenylene amide (PAM).
  • PAM polyphenylene amide
  • the reaction After the reaction is completed, it enters the sedimentation tank 15 and is subjected to precipitation separation, thereby removing calcium and magnesium in the papermaking advanced treatment wastewater and reducing The hardness of the water prevents the subsequent equipment and facilities from scaling due to excessive Ca 2+ concentration; the sediment (ie sludge) is sent to the sludge tank through the pump and pipeline, and finally filtered and separated in the sludge dewatering device, and The calcium carbonate is recovered, and the wastewater is filtered into the next step;
  • the chemically decalcified wastewater is pumped into a filtration system for filtration separation to further remove SS and colloid in water;
  • the above filtration is multi-media filtration.
  • the filtration may be one of a multi-media filtration, a fiber filter, a sand filter, an active sand filter, and a filter cloth filter.
  • the filtered wastewater is pumped into the electrolysis machine 33 for electrolysis to degrade the organic macromolecules, remove the chromaticity, and improve the biodegradability of the wastewater.
  • the voltage between the adjacent electrodes of the electrolysis machine 33 is 12V, and the current density is 10 mA/cm. 2 ;
  • the electrolyzed wastewater enters the membrane separation system, and the particles, macromolecular colloidal compounds and microorganisms in the wastewater are removed by membrane separation to obtain dialysis water and concentrated water, and the dialysis water enters the desalination treatment system, and the concentrated water is refluxed through the pipeline to the step (3) Recycling in the electrolysis machine 33;
  • the membrane separation system is an ultrafiltration system, and the ultrafiltration is an immersion ultrafiltration.
  • the working conditions are: normal temperature ⁇ 45 ° C, working pressure is -1 ⁇ -50 kPa; ultrafiltration can be immersion ultrafiltration, column ultrafiltration, A type of tubular ultrafiltration, coil ultrafiltration or plate ultrafiltration.
  • the dialysis water obtained by membrane separation is pumped into the desalination system, and the dialysis water and concentrated water are separated by filtration through a desalting system, and the dialysis water enters the storage tank to obtain reclaimed water; a part of the concentrated water is returned to the electrolysis system, and the excess is discharged.
  • the desalination system is a reverse osmosis system.
  • the reverse osmosis membrane system adopts a reverse osmosis membrane having a molecular weight cutoff of 50 to 200 MWCO, and the membrane module is a tubular membrane module or a membrane module, the inlet pressure can be 6.0 to 35.0 bar, and the pressure can be 4.5 to 33.5 bar.
  • the reclaimed water quality indicators were determined as shown in Table 4.
  • Serial number project unit measured value Serial number project unit measured value 1 COD Cr Mg/L 10 4 Chroma 5 2 SS Mg/L ⁇ 1 5 Ca Mg/L 30 3 Conductivity ⁇ S/cm 100 6 hardness Mmmol/L 0.75
  • the water quality index of the papermaking advanced treatment wastewater is determined as shown in Table 5.
  • Serial number project unit measured value Serial number project unit measured value 1 COD Cr Mg/L 150 4 Chroma 120 2 SS Mg/L 80 5 Ca Mg/L 200 3 Conductivity ⁇ S/cm 1200 6 hardness Mmmol/L 5
  • the effluent from the secondary settling tank ie, the papermaking advanced treatment wastewater
  • the primary decalcification reaction tank 11 flows into the pipeline, and the appropriate amount of lime saturated solution is first added to the 9.5 by the dosing device to remove the pseudo hardness.
  • (bicarbonate) it flows into the secondary decalcification reaction tank 13, and 350 mg/L of Na 2 CO 3 is added to react the carbonate with the calcium and magnesium ions to form a carbonate precipitate, and then 10 mg/L of FeSO 4 is added , and then Adding Na 2 CO 3 to adjust the pH to 9 and finally adding 2 mg/L of polyphenylene amide (PAM).
  • PAM polyphenylene amide
  • the reaction After the reaction is completed, it enters the sedimentation tank 15 and is subjected to precipitation separation, thereby removing calcium and magnesium in the papermaking advanced treatment wastewater and reducing The hardness of the water prevents the subsequent equipment and facilities from scaling due to excessive Ca 2+ concentration; the sediment (ie sludge) is sent to the sludge tank through the pump and pipeline, and finally filtered and separated in the sludge dewatering device, and The calcium carbonate is recovered, and the wastewater is filtered into the next step;
  • the chemically decalcified wastewater is pumped into a filtration system for filtration separation to further remove SS and colloid in water;
  • the above filtration is active sand filtration.
  • the filtration may be one of a multi-media filtration, a fiber filter, a sand filter, an active sand filter, and a filter cloth filter.
  • the filtered wastewater is pumped into the electrolysis machine 33 for electrolysis to degrade the organic macromolecules, remove the chromaticity, and improve the biodegradability of the wastewater.
  • the voltage between the adjacent electrodes of the electrolysis machine 33 is 2V, and the current density is 320 mA/cm. 2 ;
  • the electrolyzed wastewater enters the membrane separation system, and the particles, macromolecular colloidal compounds and microorganisms in the wastewater are removed by membrane separation to obtain dialysis water and concentrated water, and the dialysis water enters the desalination treatment system, and the concentrated water is refluxed through the pipeline to the step (3) Recycling in the electrolysis machine 33;
  • the membrane separation system is an MBR system.
  • the membrane module of the MBR system is selected from the group consisting of a polyvinylidene fluoride hollow fiber membrane, a polypropylene hollow fiber membrane, a polysulfone hollow fiber membrane, a polyethersulfone hollow fiber membrane, a polyacrylonitrile hollow fiber membrane, and a polyvinyl chloride hollow fiber membrane.
  • the membrane pore size of the MBR membrane module is 0.10-0.2 ⁇ m, the working pressure is -1 to -50 kPa, and the working temperature is 5 to 45 °C.
  • the dialysis water obtained by membrane separation is pumped into the desalting system, and the dialysis water and concentrated water are separated by filtration through the desalination system, and the dialysis water enters the storage tank to obtain reclaimed water; a part of the concentrated water is returned to the electrolysis system, and the excess is discharged.
  • the desalination system is a nanofiltration system.
  • the membrane module of the nanofiltration system is a tubular membrane module, a membrane membrane module or a flat membrane module, and the working pressure is 6 to 45 bar, the working temperature is 20 to 45 ° C, and the optimal temperature is 35 to 40 ° C. .
  • the water quality indicators of the reclaimed water were measured as shown in Table 6.
  • Serial number project unit measured value Serial number project unit measured value 1 COD Cr Mg/L 8 4 Chroma 6 2 SS Mg/L ⁇ 1 5 Ca Mg/L 60 3 Conductivity ⁇ S/cm 60 6 hardness Mmmol/L 1.5

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

L'invention concerne un dispositif de recyclage basé sur la décalcification chimique pour le traitement de pointe d'eaux résiduaires de fabrication du papier, comprenant un système de décalcification chimique, un système de filtration, un système d'électrolyse, un système de séparation sur membrane et un système de désalinisation. Le système de décalcification chimique est muni d'un système de dosage et le système de séparation sur membrane est un système d'ultrafiltration ou un système de BRM. L'invention concerne également un procédé de recyclage basé sur la décalcification chimique pour le traitement de pointe d'eaux résiduaires de fabrication du papier, comprenant les étapes séquentielles de décalcification chimique, filtration, électrolyse, séparation sur membrane (ultrafiltration ou BRM) et désalinisation. 70 % à 85 % des eaux résiduaires sont régénérés et recyclés au moyen du présent procédé.
PCT/CN2014/078318 2013-06-14 2014-05-23 Dispositif de recyclage basé sur la décalcification chimique et procédé pour le traitement de pointe d'eaux résiduaires de fabrication du papier Ceased WO2014198179A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201310235481.X 2013-06-14
CN201310235520.6 2013-06-14
CN201310235481.XA CN103265133B (zh) 2013-06-14 2013-06-14 基于化学脱钙的造纸深度处理废水回用方法
CN201310235520.6A CN103253838B (zh) 2013-06-14 2013-06-14 基于化学脱钙的造纸深度处理废水回用装置

Publications (1)

Publication Number Publication Date
WO2014198179A1 true WO2014198179A1 (fr) 2014-12-18

Family

ID=52021639

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/078318 Ceased WO2014198179A1 (fr) 2013-06-14 2014-05-23 Dispositif de recyclage basé sur la décalcification chimique et procédé pour le traitement de pointe d'eaux résiduaires de fabrication du papier

Country Status (1)

Country Link
WO (1) WO2014198179A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106830505A (zh) * 2017-01-23 2017-06-13 同舟纵横（厦门）流体技术有限公司 一种vb12废水零排放处理系统及处理工艺
CN109205895A (zh) * 2017-06-29 2019-01-15 北京朗新明环保科技有限公司 一种高盐废水处理工艺系统及方法
CN110183066A (zh) * 2019-07-05 2019-08-30 无锡市政设计研究院有限公司 蓝藻深度脱水废水处理系统以及工艺
CN110510792A (zh) * 2019-08-10 2019-11-29 北京首钢生物质能源科技有限公司 用于渗滤液膜浓缩液mvr蒸发的预处理装置及预处理方法
CN110734170A (zh) * 2019-10-13 2020-01-31 麦王环境技术股份有限公司 一种浓盐水深度净化装置及处理工艺
CN111762931A (zh) * 2020-07-17 2020-10-13 河北工业大学 一种氯醇法皂化废水集成膜高效浓缩的方法
CN113562905A (zh) * 2020-04-28 2021-10-29 宝山钢铁股份有限公司 一种高盐废水深度处理方法和系统
CN113979611A (zh) * 2021-11-23 2022-01-28 天津高能时代水处理科技有限公司 一种污泥高压板框脱水压滤液全量化处理系统及处理方法
CN114380444A (zh) * 2021-12-29 2022-04-22 江苏方洋水务有限公司 一种高盐废水脱盐处理系统及方法
CN117776451A (zh) * 2024-01-22 2024-03-29 惠州市兴牧环保科技股份有限公司 一种中水净化系统及其处理工艺

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU747827A1 (ru) * 1978-04-03 1980-07-15 Украинское научно-производственное объединение целлюлозно-бумажной промышленности Способ очистки сточных вод процесса отбелки целлюлозосодержащего материала
EP2332887A1 (fr) * 2009-11-30 2011-06-15 Linde Aktiengesellschaft Procédé et agencement pour le traitement d'eau de procédé
CN201873589U (zh) * 2010-11-30 2011-06-22 波鹰(厦门)科技有限公司 一种造纸深度废水处理循环利用装置
CN102107971A (zh) * 2010-11-30 2011-06-29 波鹰(厦门)科技有限公司 一种造纸深度废水处理循环利用装置及其方法
CN102120678A (zh) * 2011-03-24 2011-07-13 波鹰(厦门)科技有限公司 基于电解和mbr技术的污水循环利用装置及其方法
CN102295373A (zh) * 2011-06-15 2011-12-28 波鹰(厦门)科技有限公司 基于电化学和电渗析技术的造纸废水循环利用装置及方法
CN103253838A (zh) * 2013-06-14 2013-08-21 波鹰(厦门)科技有限公司 基于化学脱钙的造纸深度处理废水回用装置
CN103265133A (zh) * 2013-06-14 2013-08-28 波鹰(厦门)科技有限公司 基于化学脱钙的造纸深度处理废水回用方法
CN203319801U (zh) * 2013-06-14 2013-12-04 波鹰(厦门)科技有限公司 基于化学脱钙的造纸深度处理废水回用装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU747827A1 (ru) * 1978-04-03 1980-07-15 Украинское научно-производственное объединение целлюлозно-бумажной промышленности Способ очистки сточных вод процесса отбелки целлюлозосодержащего материала
EP2332887A1 (fr) * 2009-11-30 2011-06-15 Linde Aktiengesellschaft Procédé et agencement pour le traitement d'eau de procédé
CN201873589U (zh) * 2010-11-30 2011-06-22 波鹰(厦门)科技有限公司 一种造纸深度废水处理循环利用装置
CN102107971A (zh) * 2010-11-30 2011-06-29 波鹰(厦门)科技有限公司 一种造纸深度废水处理循环利用装置及其方法
CN102120678A (zh) * 2011-03-24 2011-07-13 波鹰(厦门)科技有限公司 基于电解和mbr技术的污水循环利用装置及其方法
CN102295373A (zh) * 2011-06-15 2011-12-28 波鹰(厦门)科技有限公司 基于电化学和电渗析技术的造纸废水循环利用装置及方法
CN103253838A (zh) * 2013-06-14 2013-08-21 波鹰(厦门)科技有限公司 基于化学脱钙的造纸深度处理废水回用装置
CN103265133A (zh) * 2013-06-14 2013-08-28 波鹰(厦门)科技有限公司 基于化学脱钙的造纸深度处理废水回用方法
CN203319801U (zh) * 2013-06-14 2013-12-04 波鹰(厦门)科技有限公司 基于化学脱钙的造纸深度处理废水回用装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WANG, JUANJUAN: "Accumulation and Elimination of Particles in the Circulation of Wastewater from Papermaking", CHINA MASTER'S THESES FULL-TEXT DATABASE, ENGINEERING TECHNOLOGY, vol. I, no. 9, 15 September 2012 (2012-09-15), pages 23 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106830505A (zh) * 2017-01-23 2017-06-13 同舟纵横（厦门）流体技术有限公司 一种vb12废水零排放处理系统及处理工艺
CN109205895A (zh) * 2017-06-29 2019-01-15 北京朗新明环保科技有限公司 一种高盐废水处理工艺系统及方法
CN110183066A (zh) * 2019-07-05 2019-08-30 无锡市政设计研究院有限公司 蓝藻深度脱水废水处理系统以及工艺
CN110183066B (zh) * 2019-07-05 2023-07-07 华昕设计集团有限公司 蓝藻深度脱水废水处理系统以及工艺
CN110510792A (zh) * 2019-08-10 2019-11-29 北京首钢生物质能源科技有限公司 用于渗滤液膜浓缩液mvr蒸发的预处理装置及预处理方法
CN110734170A (zh) * 2019-10-13 2020-01-31 麦王环境技术股份有限公司 一种浓盐水深度净化装置及处理工艺
CN113562905A (zh) * 2020-04-28 2021-10-29 宝山钢铁股份有限公司 一种高盐废水深度处理方法和系统
CN113562905B (zh) * 2020-04-28 2023-11-14 宝山钢铁股份有限公司 一种高盐废水深度处理方法和系统
CN111762931A (zh) * 2020-07-17 2020-10-13 河北工业大学 一种氯醇法皂化废水集成膜高效浓缩的方法
CN113979611A (zh) * 2021-11-23 2022-01-28 天津高能时代水处理科技有限公司 一种污泥高压板框脱水压滤液全量化处理系统及处理方法
CN114380444A (zh) * 2021-12-29 2022-04-22 江苏方洋水务有限公司 一种高盐废水脱盐处理系统及方法
CN117776451A (zh) * 2024-01-22 2024-03-29 惠州市兴牧环保科技股份有限公司 一种中水净化系统及其处理工艺

Similar Documents

Publication Publication Date Title
WO2014198179A1 (fr) Dispositif de recyclage basé sur la décalcification chimique et procédé pour le traitement de pointe d'eaux résiduaires de fabrication du papier
WO2014187296A1 (fr) Appareil et procédé de régénération et de recyclage destinés aux eaux usées de traitement avancé dans la fabrication du papier
EP2657198B1 (fr) Appareil de traitement et de réutilisation d'eaux résiduaires d'impression et de teinture, et procédé associé
CN102260009B (zh) 染料废水的处理方法
WO2012055263A1 (fr) Appareil et méthode de traitement et de recyclage des eaux usées de tannerie basés sur une technologie d'électrolyse nanocatalytique et une technologie de membrane
CN101955282B (zh) 一种印染企业高含盐染色废水零排放的方法
CN102126806B (zh) 一种电子工业含氟含氨氮废水全部再生回用的方法
KR101528530B1 (ko) 폐수를 이용하여 생산된 산화제를 사용하는 자원 재이용 방식 산업폐수 처리 방법 및 장치
WO2011063769A1 (fr) Dispositif d'épuration et procédé pour traiter de manière novatrice les eaux usées provenant de l'impression et la coloration
WO2012089102A1 (fr) Appareil de recyclage pour les eaux usées de processus d'impression et de teinture reposant sur l'électrolyse combinée avec une technologie de membrane, et méthode associée
CN100506713C (zh) 复合电解槽及其化机浆制浆废液复合电解脱色的方法
CN103265133B (zh) 基于化学脱钙的造纸深度处理废水回用方法
WO2013156002A1 (fr) Dispositif d'aéroflottation, de floculation, d'électrolyse nano-catalytique
CN101857328A (zh) 一种纺织印染废水资源化的方法及其装置与应用
WO2013010388A1 (fr) Appareil de traitement des lixiviats de décharge et un produit de traitement associé
CN103214153B (zh) 一种造纸深度处理废水的再生循环利用方法
CN103253838B (zh) 基于化学脱钙的造纸深度处理废水回用装置
WO2012171365A1 (fr) Appareil et procédé basés sur l'électrochimie et l'électrodialyse pour le recyclage d'eau usée issue de la fabrication de papier
WO2012126316A2 (fr) Dispositif de recyclage des eaux usées fondé sur les technologies mbr et d'électrolyse et procédé associé
KR100957851B1 (ko) 응집제 투입시기에 따른 수처리방법
CN102107971B (zh) 一种造纸深度废水处理循环利用装置及其方法
KR101339303B1 (ko) 전기응집과 전기분해를 이용한 불소가 함유된 질소 함유 병합처리방법
CN101607770A (zh) 一种工业污水处理水再生处理的方法
KR101300466B1 (ko) 하·폐수처리장치와 이를 이용한 인 제거방법
CN103214154B (zh) 一种造纸深度处理废水的再生循环利用装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14810892

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14810892

Country of ref document: EP

Kind code of ref document: A1