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WO2011098167A1 - Installation de traitement des eaux usées - Google Patents

Installation de traitement des eaux usées Download PDF

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Publication number
WO2011098167A1
WO2011098167A1 PCT/EP2010/068923 EP2010068923W WO2011098167A1 WO 2011098167 A1 WO2011098167 A1 WO 2011098167A1 EP 2010068923 W EP2010068923 W EP 2010068923W WO 2011098167 A1 WO2011098167 A1 WO 2011098167A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrophysical
treatment plant
wastewater treatment
plant according
wastewater
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/EP2010/068923
Other languages
German (de)
English (en)
Inventor
Michael Weiss
Christian Naydowski
Georgios Troubonis
Thilo Ittner
Armin Bauer
Martin Staiger
Thomas Wurster
Eckhard Gutsmuths
Werner Gessler
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of WO2011098167A1 publication Critical patent/WO2011098167A1/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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/06—Treatment of sludge; Devices therefor by oxidation
    • C02F11/08—Wet air oxidation
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • 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
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • 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
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4612—Controlling or monitoring
    • C02F2201/46125—Electrical variables
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/78—Details relating to ozone treatment devices
    • C02F2201/782—Ozone generators
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/001—Upstream control, i.e. monitoring for predictive control
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/11—Turbidity
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/21—Dissolved organic carbon [DOC]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/24—Separation of coarse particles, e.g. by using sieves or screens
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical

Definitions

  • the invention relates to a wastewater treatment plant for the purification of wastewater of a machine for producing a paper, board, tissue or another fibrous web, which at least one press section for dewatering the
  • Dispersants, bleaching chemicals, cleaning agents, dyes, complexing agents and solubilizers which are specifically supplied to the process, contribute by enrichment in the circuits to an increase in the concentration of colloidally dissolved impurities directly or from the interaction with each other.
  • Other sources include extracts from the pulps, lignin and lignin derivatives,
  • the high loads can also lead to increased microbiological activity in laid paper, as it contains easily metabolizable substances. Paper properties such as whiteness, opacity, color and strength are also affected by the presence of colloidal impurities.
  • the impurities can also lead to increased foam by lowering the surface tension, which has a negative impact on the paper quality or makes the increased use of antifoaming agents required.
  • the accumulation of contaminants in the entire water cycle system depends on the amount of raw materials supplied, the process temperature, the
  • Extractability the water circulation rate, the amount discharged with the wastewater, the discharge of impurities with the paper produced and the supply of fresh water.
  • the object of the invention is therefore to enable the removal of colloidally dissolved impurities in an efficient manner.
  • the object has been achieved in that at least a portion of the wastewater of the press section in an electrophysical cleaning step for coagulation and flocculation and then in a deposition step with
  • Manufacturing machine is performed in the electrophysical cleaning stage.
  • At least a portion of the wastewater purified in the electrophysical cleaning stage may be used as a partial or complete fresh water replacement in the manufacturing process, i. to the production machine of the fibrous web
  • this purified wastewater can be used in particular for water spray devices, such as spray tubes or for chemical dilution.
  • the remaining part of the waste water purified in the electrophysical purification stage should be fed into the stock preparation preceding the production machine or the constant part.
  • a pulp suspension of pulp and / or waste paper is made with the addition of water and additives.
  • the highly consistent pulp suspension of the stock preparation which is essentially formed of processed fibers and fillers, is diluted with water and then fed to the headbox of the production machine.
  • a filter in particular a
  • a cleaning stage with wet oxydation is present before the electrophysical cleaning stage, preferably between the filter and the electrophysical cleaning stage.
  • Wet oxidation is understood to mean the chemical oxidation of organic compounds in a liquid phase.
  • wet oxidation by the introduction of ozone or oxygen at high pressure and high temperature
  • wet-oxidation purification stage is designed electrochemically and / or UV-supported.
  • Oxidizing agents (ozone, OH, O +) by decomposing water
  • the water By applying a DC voltage, the water is decomposed, producing at the anode OH radicals and above a certain current ozone and at the cathode hydrogen.
  • inert electrodes preferably diamond electrodes should be used.
  • the radicals or oxidants are generated by the irradiation of the waste water with UV radiation.
  • the water to be treated is passed through a reactor equipped with sacrificial electrodes in which various electrochemical reactions take place by applying an electric current.
  • the metal hydroxide flakes have a high adsorption capacity and can thus bind finely divided particles to themselves. It also leads to mit precipitation and inclusion precipitation reactions in which the colloidally dissolved substances are precipitated. In addition to the precipitation reactions, there are also oxidative effects, mainly by highly reactive oxygen radicals, which leads to further degradation of organic compounds.
  • Precipitation / flocculation were generated in the previous step, here separated from the purified filtrate.
  • the electrophysical cleaning stage allows in the invention, a demand-oriented, targeted transfer and the discharge of the most
  • anionic contaminant as a solid.
  • the control / regulation of the sewage treatment plant it is advantageous if the load level of the wastewater is measured and the intensity of the electro-physical cleaning is at least partially controlled / regulated in a manner that balances the stress level over time.
  • this involves reducing the overall load level of the waters with colloidally dissolved impurities, so that certain water qualities are achieved, which reduce the use of fresh water.
  • Another often much more important object of the invention is the timely
  • the concentration of impurities should be determined by measuring the chemical oxygen demand (COD), the dissolved carbon (DOC), the turbidity, the anionic charge character (SCD), the evaporation residue, the titrated cationic demand or similar. respectively.
  • the intensity of the electrophysical cleaning via the electrical power consumption i. over the height of the voltage applied to the electrodes
  • Voltage and / or the amperage can be controlled / regulated.
  • the invention should advantageously be used in particular in partially or completely closed processes with high levels of contaminant load and / or large fluctuations and / or small amounts of sewage or fresh water, since in these cases the effects of the concentration of colloidally dissolved impurities on the process stability are particularly disturbing are.
  • the invention will be explained in more detail with reference to an exemplary embodiment.
  • the figure shows an investment scheme of a
  • Wastewater treatment plant for a paper machine The paper machine is used to produce a fibrous web 2 concretely a paper web and starts with a headbox, the pulp suspension 17 on an endlessly rotating sieve or between two rotating sieves of a
  • Sheet forming area 7 brings.
  • the press section 8 we led the fibrous web 2 together with at least one water-absorbing, endlessly circulating belt through at least one press nip.
  • the hereby pressed from the fibrous web 2 white water II is fed into the white water tank 14.
  • Treatment steps such as a drying section 9 for drying the fibrous web 2, optionally a coating device and usually also a smoothing device 10 for smoothing the fibrous web 2 before it can then be wound up.
  • the headbox supplied pulp suspension 17 is formed in the upstream stock preparation 1 1 of pulp and / or waste paper with the addition of water, wherein the pulp suspension 17 in the stock preparation 1 1 several treatment stage, such as bleaching, grinding, etc. goes through.
  • This dilution in the constant part 12 is here, as usually, realized with the white water I from the white water tank 13.
  • Sheet forming area 7 passes from the white water tank 13 to
  • the white water tank 14 thus comprises the entire waste water 1 of the press section 8 and a part of the waste water 1 of the sheet forming area 7.
  • waste water 1 of the press section 8 contains significantly more colloidally dissolved impurities than the other waste water 1, this is subjected to a special treatment.
  • the waste water 1 of the white water tank 14 is led to Entstoffung and pre-cleaning in a disc filter 6. While the fiber and filler-containing catcher material 16 of the disk filter 6 is fed into the stock preparation 1 1 for reuse, enters a portion of the effluent 1 of the disc filter 6 (clear filtrate) in a waste water tank 15 and the other part in an electrophysical
  • the wastewater 1, as shown in the figure, are passed from the filter 6 via a cleaning stage 5 with wet oxygenation to the electrophysical cleaning stage 3.
  • a cleaning stage 5 with wet oxygenation to the electrophysical cleaning stage 3.
  • Easily oxidizable substances are to be converted into anionically charged impurities which are more accessible to the precipitation and flocculation treatment in an electrophysical purification stage 3.
  • inert electrodes and an applied electric potential difference With the help of inert electrodes and an applied electric potential difference, ozone and highly reactive OH radicals are generated in the purification stage 5 with wet oxidation, which radicals act as oxidizing agents.
  • Process are colloidally dissolved impurities oxidized in the water.
  • the colloidally dissolved impurities anionically charged interfering substances, such as hemicelluloses, resins, polysaccharides, etc., which occur in particular in waste water from papermaking
  • the colloidally dissolved impurities are to be converted into larger agglomerates.
  • the waste water 1 is guided into a container which has a sacrificial anode, for example of aluminum and a particular inert cathode, which are connected via a control unit with a DC voltage source.
  • a sacrificial anode for example of aluminum and a particular inert cathode, which are connected via a control unit with a DC voltage source.
  • the cathode can also consist of sacrificial anode material, which provides the opportunity for
  • Electrophysical precipitation for the purpose of coagulation and flocculation of colloidally dissolved impurities.
  • the current can be changed via a control unit so that it is not just one
  • Separation stage 4 can be used for flake enlargement and flake separation, in particular by means of flotation, sedimentation, filtration or the like.
  • the particle agglomerates which were generated with the aid of the electro-physical purification stage 3 are separated from the wastewater 1 and removed.
  • the thus purified wastewater 1 is then passed into the Abiganbehalter 15, from where it is passed into the stock preparation 1 1 and the manufacturing machine.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

L'invention concerne une installation de traitement des eaux usées destinée à nettoyer des eaux usées (1) d'une machine de fabrication d'une bande de papier, de carton, de papier sanitaire et domestique ou d'une autre bande de matière fibreuse (2), comprenant au moins une partie de pressage (8) destinée à la déshydratation de la bande de matière fibreuse (2). L'objectif de l'invention est de réduire de manière efficace la charge en substances de solution colloïdale dans le circuit d'eau de la machine. A cet effet, au moins une partie des eaux usées (1) de la partie de pressage (8) est conduite dans une zone de traitement électrophysique (3) par coagulation et floculation, puis dans une zone de précipitation (4) où les flocons sont grossis et précipités.
PCT/EP2010/068923 2010-02-11 2010-12-06 Installation de traitement des eaux usées Ceased WO2011098167A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010001801A DE102010001801A1 (de) 2010-02-11 2010-02-11 Abwasserreinigungsanlage
DE102010001801.5 2010-02-11

Publications (1)

Publication Number Publication Date
WO2011098167A1 true WO2011098167A1 (fr) 2011-08-18

Family

ID=43608914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/068923 Ceased WO2011098167A1 (fr) 2010-02-11 2010-12-06 Installation de traitement des eaux usées

Country Status (2)

Country Link
DE (1) DE102010001801A1 (fr)
WO (1) WO2011098167A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102721598A (zh) * 2012-04-27 2012-10-10 巨石集团有限公司 一种纤维玻璃原料及配合料中cod值测定的试样处理方法
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
CN104071938A (zh) * 2014-07-08 2014-10-01 日照弗尔曼新材料科技有限公司 造纸黑液和硅酸钠尾气的联合处理方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011083709A1 (de) * 2011-09-29 2013-04-04 Voith Patent Gmbh Betriebsverfahren für eine Stoffaufbereitung
DE102012220771A1 (de) 2012-11-14 2014-05-15 Voith Patent Gmbh Misch-/ Dosiervorrichtung
DE102012223368A1 (de) 2012-12-17 2014-06-18 Voith Patent Gmbh Online-Detektieren von Aluminium-Ionen
DE102012223574A1 (de) 2012-12-18 2014-06-18 Voith Patent Gmbh Elektrolysevorrichtung und Verfahren zur Erzeugung von Aluminium-Ionen
DE102013225247A1 (de) 2013-12-09 2015-06-11 Voith Patent Gmbh Stoffaufbereitung
DE102014203794A1 (de) 2014-03-03 2015-03-26 Voith Patent Gmbh Entwässerungsverfahren

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456897A (en) * 1942-05-19 1948-12-21 Lansing Electrolytic clarification apparatus
DE2201459A1 (de) * 1972-01-13 1973-07-19 Homann Gmbh Fritz Verfahren zum herstellen von platten aus holzfasern
JPS5251753A (en) * 1975-10-22 1977-04-25 Hitachi Plant Eng & Constr Co Ltd Method of clarifying textile-containing organic wastewater
US4115188A (en) * 1975-09-11 1978-09-19 Brien Richard C O Method for recycling paper mill waste water
US4123341A (en) * 1976-09-27 1978-10-31 Sulzer Brothers Limited Apparatus and process for treating contaminated water
DE4116557A1 (de) * 1991-05-21 1992-11-26 Escher Wyss Gmbh Verfahren zur behandlung von abwasser in anlagen zur aufbereitung von altpapier
DE19625346A1 (de) * 1996-06-25 1998-01-02 Joseph Dipl Ing Maier Verfahren zur Wasseraufbereitung in einem geschlossenen Kreislauf mit Reaktor
US6238546B1 (en) * 1996-10-23 2001-05-29 Louis H. Knieper Electrochemical treatment of effluent water
WO2003086981A1 (fr) * 2002-04-08 2003-10-23 Aquenox Pty Ltd Procede d'installation d'un appareil d'elimination de contaminants
EP1659098A2 (fr) * 2003-06-19 2006-05-24 Kansai Paint Co., Ltd. Procede de decantation de l'eau residuaire contenant une substance organique
WO2007050041A1 (fr) * 2005-10-28 2007-05-03 Thiam Seng Lee Dispositif avance d'electrocoagulation et processus pour son utilisation dans le traitement des eaux usees

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456897A (en) * 1942-05-19 1948-12-21 Lansing Electrolytic clarification apparatus
DE2201459A1 (de) * 1972-01-13 1973-07-19 Homann Gmbh Fritz Verfahren zum herstellen von platten aus holzfasern
US4115188A (en) * 1975-09-11 1978-09-19 Brien Richard C O Method for recycling paper mill waste water
JPS5251753A (en) * 1975-10-22 1977-04-25 Hitachi Plant Eng & Constr Co Ltd Method of clarifying textile-containing organic wastewater
US4123341A (en) * 1976-09-27 1978-10-31 Sulzer Brothers Limited Apparatus and process for treating contaminated water
DE4116557A1 (de) * 1991-05-21 1992-11-26 Escher Wyss Gmbh Verfahren zur behandlung von abwasser in anlagen zur aufbereitung von altpapier
DE19625346A1 (de) * 1996-06-25 1998-01-02 Joseph Dipl Ing Maier Verfahren zur Wasseraufbereitung in einem geschlossenen Kreislauf mit Reaktor
US6238546B1 (en) * 1996-10-23 2001-05-29 Louis H. Knieper Electrochemical treatment of effluent water
WO2003086981A1 (fr) * 2002-04-08 2003-10-23 Aquenox Pty Ltd Procede d'installation d'un appareil d'elimination de contaminants
EP1659098A2 (fr) * 2003-06-19 2006-05-24 Kansai Paint Co., Ltd. Procede de decantation de l'eau residuaire contenant une substance organique
WO2007050041A1 (fr) * 2005-10-28 2007-05-03 Thiam Seng Lee Dispositif avance d'electrocoagulation et processus pour son utilisation dans le traitement des eaux usees

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102721598A (zh) * 2012-04-27 2012-10-10 巨石集团有限公司 一种纤维玻璃原料及配合料中cod值测定的试样处理方法
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
CN103265133B (zh) * 2013-06-14 2015-01-28 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
CN104071938A (zh) * 2014-07-08 2014-10-01 日照弗尔曼新材料科技有限公司 造纸黑液和硅酸钠尾气的联合处理方法
CN104071938B (zh) * 2014-07-08 2015-10-28 日照弗尔曼新材料科技有限公司 造纸黑液和硅酸钠尾气的联合处理方法

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