WO2009101157A1 - Procede de traitement d'eau par systeme membranaire de type nanofiltration ou osmose inverse permettant des taux de conversion eleves grace a l'elimination de la matiere organique - Google Patents
Procede de traitement d'eau par systeme membranaire de type nanofiltration ou osmose inverse permettant des taux de conversion eleves grace a l'elimination de la matiere organique Download PDFInfo
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- WO2009101157A1 WO2009101157A1 PCT/EP2009/051669 EP2009051669W WO2009101157A1 WO 2009101157 A1 WO2009101157 A1 WO 2009101157A1 EP 2009051669 W EP2009051669 W EP 2009051669W WO 2009101157 A1 WO2009101157 A1 WO 2009101157A1
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- reverse osmosis
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/029—Multistep processes comprising different kinds of membrane processes selected from reverse osmosis, hyperfiltration or nanofiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/08—Specific process operations in the concentrate stream
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/147—Microfiltration
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- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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- 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
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- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/306—Pesticides
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- 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
- C02F2103/08—Seawater, e.g. for desalination
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- 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
- C02F2209/20—Total organic carbon [TOC]
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- 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
- C02F2303/20—Prevention of biofouling
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- 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
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- 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
- C02F3/06—Aerobic processes using submerged filters
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- 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
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- 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
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- 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
- a water treatment method using a nanofiltration or reverse osmosis membrane system that allows high conversion rates by eliminating organic matter.
- the field of the invention is that of the treatment of water.
- the invention relates to the treatment of freshwater, brackish water, seawater or wastewater treatment plant (WWTP), for their purification, desalination, recycling or purification by the implementation membrane processes, in particular nanofiltration or reverse osmosis.
- WWTP wastewater treatment plant
- Membrane filtration processes are commonly used to potabilize, recycle, desalinate or purify water to give it a quality that can make it usable in various industrial processes.
- Membrane processes conventionally used consist in passing the water to be treated (also called raw water) through membranes that physically retain the elements initially present in the water.
- the size of the elements that can be retained by a membrane translates its cutoff threshold.
- the microfiltration membranes have a cut-off threshold of the order of 0.1 ⁇ m
- the ultrafiltration membranes have a cut-off point of the order of 0.0 l ⁇ m
- the nanofiltration membranes have a threshold of cut at the nanoscale.
- nanofiltration or the reverse osmosis are generally preceded, in order to limit the clogging of the membranes used, of a pretreatment which may notably consist of a grit removal, a coagulation, flocculation and decantation so as to remove a large proportion of particles, including colloidal particles, initially in suspension.
- This type of treatment process makes it possible to produce between 40 and 90%, and more generally for the nanofiltration between 75 and 85% of treated water which corresponds to the permeate resulting from the membranes, and generates in counterpart at best between 15 to 25% of rejects called concentrates.
- This type of process reduces the volume of discharges discharged into the natural environment and consequently increases the amount of treated water produced, which contributes to preserving the environment while preserving natural resources.
- Y 100- (100 * Qrejet / Q ii men tation) (Q re jet corresponding to the concentrate flow rejected and Qalimentation corresponding to the water flow to be treated).
- the problem of clogging membranes arises in many types of membrane treatment processes, especially when the conversion rates are high. In fact, over time, the pores of the membranes become clogged, resulting in an increase in the pressure drop and a drop in the efficiency of the treatment plants.
- This type of physicochemical treatment essentially helps to avoid the precipitation of salts on the membranes.
- the invention particularly aims to overcome these disadvantages of the prior art.
- an object of the invention is to provide, in at least one embodiment, a water treatment technique, containing organic materials, by nanofiltration or reverse osmosis for the purpose of its purification, its purification for a industrial application, recycling or desalination that is more respectful of the environment.
- one objective of the invention is to implement, in at least one embodiment, such a technique which has a high conversion rate, that is to say which makes it possible to reduce the quantity of concentrates discharged into the environment. natural environment and increase the amount of treated water produced.
- Another object of the invention is to reject a purified concentrate pollutants initially present in the water taken.
- Another objective of the invention is also to provide, in at least one embodiment of the invention, such a technique which makes it possible to reduce the quantities of chemical required for the treatment of the water in question.
- the invention also aims to propose, in at least one embodiment, such a water treatment technique whose frequency of maintenance campaigns is relatively reduced, at least compared to the techniques of the prior art. .
- an objective of the invention is to implement, in at least one embodiment, such a water treatment technique that to reduce the clogging, particularly of organic origin and / or biological origin, membranes used during its implementation.
- Another objective of the invention is to provide, in at least one embodiment, such a water treatment technique which makes it possible to limit the wear of the membranes and which consequently makes it possible to reduce their frequency of replacement.
- the invention also aims to provide, in at least one embodiment, such a water treatment technique that is relatively effective, reliable, at least compared to the techniques of the prior art. 4. Presentation of the invention
- a freshwater, seawater, brackish or STEP process that contains organic matter with a TOC content. varies between 0.5 and 50 ppm, with a view to its purification, desalinization, recycling or for purification for industrial application, said process comprising at least: a primary treatment step comprising a phase of grit-sieving and and / or oxidation and / or coagulation and / or flocculation and / or decantation and / or membrane filtration such as micro filtration or ultrafiltration of said water; a first step of filtration by nanofiltration or reverse osmosis of a flow from said primary treatment step; a second step of filtration by nanofiltration or reverse osmosis of a concentrate from said first filtration step; a step of recovering a permeate resulting from said first filtration step; a step of rejection in the natural environment of a treatment residue.
- a primary treatment step comprising a phase of grit-sieving and and / or oxidation and / or
- such a method comprises an intermediate treatment step including a biological treatment and / or low-pH coagulation of said concentrate from said first filtration step and / or said concentrate from said second filtration step.
- said intermediate processing step (12, 12 ") includes only a biological treatment.
- the invention is based on an innovative approach for the treatment of a water containing organic matter, whether it is sweet, brackish, STEP or salty, and which consists of subjecting the concentrate from a first nanofiltration step or reverse osmosis water to treat a biological intermediate treatment step followed by a nanofiltration step or reverse osmosis.
- This original approach according to which the intermediate treatment undergone by the concentrate includes a biological treatment phase, makes it possible to prevent the clogging of both organic and biological origin of the filtration or reverse osmosis membranes.
- the fact of providing a biological treatment upstream of the second nanofiltration or reverse osmosis step makes it possible to reduce the concentration of organic matter contained in the concentrate from the first filtration step and to reduce the amount of organic matter deposited on the membranes.
- the reduction of the concentration of organic matter in this concentrate makes it possible to limit the proliferation of biomass and consequently reduce the formation of biofilm on the membranes of the second filtration step.
- the intermediate treatment of biological type leads to degrade a part of the organic material originally present in the water to be treated, to reduce the organic matter concentration of the rejects. It also makes it possible to reduce the quantities of chemicals that should be used in order to reduce organic pollution compared to a process that does not use biological intermediate treatment. All this contributes to reduce the volume of discharges discharged into the natural environment and thus tends to meet the increasingly present constraints relating to the respect of the environment.
- the fact that the intermediate treatment step may include a low pH coagulation step is of interest when the level of biodegradable organic material is low. Indeed, coagulation at low pH makes it possible to precipitate non-organic organic matter logically degradable physico-chemically, unlike biological treatment.
- the choice between biological treatment or coagulation at low pH can be made according to the type of water to be treated and the nature of the organic matter it contains.
- the process according to the invention advantageously makes it possible to obtain a suitable treatment when said water contains between 1 and 15 ppm of TOC (total organic concentration).
- the total conversion rate of said primary treatment step and of said first filtration step is between 40 and 90% and the overall conversion rate of said first intermediate treatment stage and said second filtration stage is between 20 and 90%.
- the total conversion rate of said primary treatment step and said first filtration step is between 75 and 85% and the overall conversion rate of said first intermediate treatment step and said second filtration step is between 60 and 80%.
- a method according to the invention comprises at least one implementation, in series, of a second step of intermediate treatment and then a third step of filtration of said concentrate from said second filtration step. This leads to a tenfold increase in the capacity of the process according to the invention and to increase its overall conversion rate accordingly.
- said second intermediate treatment step includes a biological type treatment. This makes it possible to contribute to eliminating the biodegradable organic pollution and thus to limiting the clogging of the membranes of the following filtration stages. This also helps to limit the formation of a biofilm on the membranes. The frequency of replacement of the membranes can therefore be reduced.
- said second intermediate treatment step includes a physicochemical treatment.
- this physicochemical treatment preferentially belongs to the group comprising: a biocide injection; deoxygenation; - acidification; a precipitation of salts; decarbonation with soda or lime; a softening.
- said second intermediate treatment step includes a settling type clarification treatment and / or flotation and / or granular bed filter and / or oxidation and / or microfiltration or ultrafiltration membranes.
- a method according to the invention comprises a step of treating said residue before rejection in the natural environment, said treatment step consisting of adsorption and / or oxidation and / or biological treatment.
- a method according to the invention comprises a step of recirculation, in said concentrate from said first filtration step, of a flow coming from said first step of intermediate treatment of said concentrate originating from said second filtration stage.
- This implementation makes it possible to optimize the efficiency of the intermediate treatment. Indeed, a biological treatment will be more effective on the concentrated concentrate after the nano filtration or reverse osmosis step because the biodegradable organic matter content will be greater. Similarly, if this intermediate treatment comprises a physicochemical treatment, the precipitation of the salts will be faster in the case where their concentration is high.
- a method according to the invention comprises a step of mixing a permeate from said second filtration step with said permeate from said first filtration step.
- a method according to the invention preferably comprises a step of mixing a permeate from at least one of said third filtration stages with said permeate from said first filtration step.
- a method according to the invention comprises one or more implementations, in series, of a second stage of intermediate treatment then of a third stage of filtration of said concentrate from said second stage filtration step, this additional feature further allows to further increase the amount of treated water produced.
- FIG. synoptic of a first embodiment of a water treatment method according to the invention FIG. 2 illustrates a particular implementation making it possible to multiply the capacities of the water treatment method according to the first embodiment described with reference to FIG. 1;
- FIG. 3 is a block diagram of a second embodiment of a water treatment method according to the invention. 6. Description of embodiments of the invention
- the general principle of the invention is based on an original approach for the treatment of a water containing organic matter, whether it is sweet, brackish, STEP or salty, and which consists in subjecting the concentrate from a first step of nanofiltration or reverse osmosis of water to treat a nanofiltration or reverse osmosis step preceded by an intermediate treatment step allowing the removal of organic matter such as biological treatment or coagulation at low pH.
- the implementation of such an intermediate treatment step makes it possible in particular: to reduce the concentration of organic matter contained in the concentrate from the first filtration step, and to limit the proliferation of biomass in the concentrate before it undergoes a nanofiltration or reverse osmosis step.
- the implementation of such an intermediate treatment makes it possible in particular to prevent clogging of both organic origin and biological origin of nanofiltration membranes or reverse osmosis.
- this water treatment process which can be used for the treatment of fresh water, brackish water, STEP outlet water or salt water for its potabilization, purification, recycling or desalination, includes a primary treatment step 10 of the water to be treated.
- This primary treatment step may in particular comprise a grit-sieving phase so as to retain a large part of the relatively large-sized solid particles initially present in the water to be treated.
- This primary treatment step may also comprise a pre-oxidation step (O 2, KmnO 4, Chloramine, ClO 2, Cl 2, O 3, .7) to oxidize the reduced metals (iron, manganese, etc.) and to improve coagulation. .
- This primary treatment step may further comprise a coagulation phase so as to promote the flocculation of the colloidal particles contained in the water to be treated.
- This coagulation phase can conventionally be followed by a flocculation phase such that the colloidal particles suspended in the water to be treated come together to form flocs.
- the primary treatment may also include a settling step in which the previously formed flocs separate from the water to be treated.
- the primary treatment may finally comprise a membrane filtration step such as micro filtration or ultrafiltration.
- the water having undergone this primary treatment then undergoes a first nanofiltration or reverse osmosis step according to the use for which it is intended.
- Step 11 of nanofiltration or reverse osmosis leads to the production of: a permeate which constitutes, at least in part, the treated water produced, and a concentrate which constitutes a filtration residue.
- the concentrate resulting from this first filtration step 11 contains, in particular, organic materials, pesticides and salts. This concentrate is then directed to undergo a second nanofiltration step 13 or reverse osmosis.
- This intermediate treatment step 12 comprises in particular a biological type treatment.
- This type of biological treatment may consist in particular of a treatment on fixed cultures such as a filtration on granular activated carbon, on an aerated sand filter, on a biofilter or on a membrane bioreactor (BRM) or any other adapted biological treatment process .
- BRM membrane bioreactor
- this biological intermediate treatment step 12 the frequency of cleaning and replacement of the membranes can be reduced on the second nanofiltration or reverse osmosis stage. This contributes to reducing the operating costs generated by the implementation of such a method.
- the biological treatment is replaced by coagulation at low pH. Coagulation at low pH allows the precipitation of organic matter physico-chemically, unlike the biological treatment that degrades organic matter. This treatment may be applied alternatively to the biological treatment when it turns out to be inefficient, in case of low presence of biodegradable organic materials for example.
- this intermediate treatment also comprises a complementary physicochemical treatment.
- Such a physicochemical treatment may in particular make it possible to reduce the precipitation on the membranes of the salts contained in the concentrate, for example by injection of an acidifying agent. It may also consist of oxidation, precipitation of salts, decarbonation with soda or lime, softening.
- the content of non-biologically organic material logically biodegradable in the concentrate, and the organic clogging of the membranes can be advantageously lowered by injection into the concentrate of a biocide, or by deoxygenation, for example by injection of an oxygen reducer or by the implementation of a membrane contactor.
- Other suitable means may of course be implemented to produce such effects.
- the second step 13 nanofiltration or reverse osmosis allows the production of a permeate and a concentrate.
- the permeate thus produced is collected and mixed with the permeate produced during the first stage 1 1 nanofiltration or reverse osmosis, which leads to increase the amount of treated water produced, and goes in the direction of a better respect the environment.
- the conversion rate obtained by the implementation of the primary treatment step 10 and the first step of nanofiltration or reverse osmosis varies. between 40 and 90%, and more generally is of the order of 85%, which means that it leads to the rejection of generally 15% concentrate.
- the conversion rate obtained by the implementation of the intermediate treatment step 12 and the second step 13 of nanofiltration or reverse osmosis is between 20 and 90% and more generally between 60 and 80%.
- the overall conversion rate obtained by the implementation of all of these steps 10, 11, 12, 13 is therefore between 52 and 99.99% and more generally between 94 and 97%.
- the concentrate produced during the second nanofiltration or reverse osmosis step 13 is then directed to undergo a treatment step 14 prior to release into the natural environment.
- This treatment step 14 can in particular comprise an adsorption, for example on CAG (Activated Charcoal in Grains) or on CAP (Activated Charcoal in Powder) and / or an oxidation, for example with ozone, and / or a treatment of type organic. It may also include evaporation or coagulation, flocculation, decantation.
- the implementation of such a concentrate treatment step 14 allows to discharge into the natural environment effluent purified by pesticides and whose organic content is in accordance with legislation.
- the implementation of a treatment method according to this first embodiment makes it possible to obtain an overall conversion rate of between 94 and 97%, and thus to reduce the volume of discharges and to increase the volume of water produced. . This consequently makes it possible to reduce the size of the installations necessary for the treatment of the concentrates before they are released into the wild. It also leads to limiting the clogging of membranes and reducing the frequency of maintenance campaigns. 6.3. Demultiplication of a water treatment method according to the first embodiment of the invention
- This implementation example consists of multiplying the capacities of the method according to the first embodiment by providing a series implementation of a second intermediate treatment stage 12 'and then a third stage 13' of filtration by nanofiltration or reverse osmosis of the concentrate from said second nanofiltration or reverse osmosis stage.
- the intermediate treatment 12 'and nanofiltration or reverse osmosis 13' steps may be similar to the intermediate treatment 12 and nanofiltration or reverse osmosis steps 13.
- the method according to the first embodiment can be multiplied by providing several series of implementations of a second intermediate treatment stage 12 'and then a third stage 13' of filtration by nanofiltration or reverse osmosis concentrate from said second nanofiltration or reverse osmosis step 13.
- the essential difference between this second embodiment and the first embodiment is that the concentrate from the first nanofiltration or reverse osmosis step 11 is directly directed so that it undergoes a second stage of nanofiltration or reverse osmosis 14 without undergoing any intermediate treatment.
- the concentrate originating from this second nanofiltration or reverse osmosis stage 13 is at least partly directed such that it undergoes an intermediate treatment step 12 "which notably comprises a biological type treatment.
- 12 "processing may include other types of treatment in the same way as the intermediate processing step 12 of the first embodiment.
- the intermediate treatment consists of coagulation at low pH.
- At least a portion of the concentrate having undergone this intermediate treatment step 12 " is recirculated so that it is mixed with the newly produced concentrate during the implementation of the first nanofiltration step. or reverse osmosis 11.
- This implementation makes it possible to optimize the effectiveness of the treatment 12 "A biological treatment will indeed be more effective on the concentrated concentrate after the nanofiltration step 13 because the content of biodegradable organic matter will be greater. even if the treatment 12 "comprises a physicochemical treatment, the precipitation of the salts will be faster in the case where their concentration is high.
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
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Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/867,588 US20110062079A1 (en) | 2008-02-14 | 2009-02-12 | Process for treating water by a nanofiltration or reverse osmosis membrane system enabling high conversion rates due to the elimination of organic matter |
| AU2009214074A AU2009214074B2 (en) | 2008-02-14 | 2009-02-12 | Process for treating water by a nanofiltration or reverse osmosis membrane system permitting high conversion rates due to the elimination of organic matter |
| IL207571A IL207571A0 (en) | 2008-02-14 | 2010-08-12 | Process for treating water by a nanofiltration or reverse osmosis membrane system enabling high conversion rates due to the elimination of organic matter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0850947 | 2008-02-14 | ||
| FR0850947A FR2927622B1 (fr) | 2008-02-14 | 2008-02-14 | Procede de traitement d'eau par systeme membranaire de type nanofiltration ou osmose inverse permettant des taux de conversion eleves grace a l'elimination de la matiere organique. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009101157A1 true WO2009101157A1 (fr) | 2009-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/051669 Ceased WO2009101157A1 (fr) | 2008-02-14 | 2009-02-12 | Procede de traitement d'eau par systeme membranaire de type nanofiltration ou osmose inverse permettant des taux de conversion eleves grace a l'elimination de la matiere organique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20110062079A1 (fr) |
| AU (1) | AU2009214074B2 (fr) |
| FR (1) | FR2927622B1 (fr) |
| IL (1) | IL207571A0 (fr) |
| WO (1) | WO2009101157A1 (fr) |
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| CN102826670A (zh) * | 2012-09-19 | 2012-12-19 | 宁波福特恩饮水科技有限公司 | 二次膜过滤水的方法 |
| US20130082001A1 (en) * | 2010-06-09 | 2013-04-04 | Kobelco Eco-Solutions Co., Ltd. | Fresh Water Generating Apparatus and Fresh Water Generating Method |
| US20130206697A1 (en) * | 2010-06-09 | 2013-08-15 | Kobelco Eco-Solutions Co., Ltd. | Fresh Water Generating Apparatus and Fresh Water Generating Method |
| WO2014177594A1 (fr) * | 2013-05-03 | 2014-11-06 | Ys Lab | Solution marine enrichie en zinc et en potassium |
| CN106186502A (zh) * | 2016-09-27 | 2016-12-07 | 江苏亚欧环境工程有限公司 | Ro浓水零排放的地下水处理系统及方法 |
| CN106219848A (zh) * | 2016-07-21 | 2016-12-14 | 绍兴文理学院 | 一种搅拌型双滤除盐技术 |
| CN106396173A (zh) * | 2016-10-21 | 2017-02-15 | 北京沃特尔水技术股份有限公司 | 一种反渗透浓水处理方法和系统 |
| CN107200409A (zh) * | 2017-05-11 | 2017-09-26 | 上海雷鸣水处理技术有限公司 | 一种废水零排放ro纯水机 |
| CN108383266A (zh) * | 2018-01-21 | 2018-08-10 | 浙江太阳石水处理有限公司 | 一种生态型解决海水淡化饮用水水质口感的系统及工艺 |
| CN108455766A (zh) * | 2018-01-21 | 2018-08-28 | 浙江太阳石水处理有限公司 | 一种智能型解决含油污海水的水处理系统 |
| CN114408984A (zh) * | 2021-12-31 | 2022-04-29 | 宜宾光原锂电材料有限公司 | 前驱体制备过程中母液的循环利用方法 |
| CN114426360A (zh) * | 2020-09-16 | 2022-05-03 | 中国石油化工股份有限公司 | 一种煤化工高盐废水的处理系统及处理方法 |
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| DE102010043711B4 (de) * | 2010-11-10 | 2015-11-19 | Michael Eumann | Wasseraufbereitungsverfahren |
| CN105439246A (zh) | 2011-04-25 | 2016-03-30 | Oasys水有限公司 | 渗透分离系统和方法 |
| US20140054218A1 (en) * | 2012-08-22 | 2014-02-27 | Marcus D. Sprenkel | System to Reduce the Fouling of a Catalytic Seawater Deoxygenation Unit |
| PE20151277A1 (es) | 2013-02-08 | 2015-09-23 | Oasys Water Inc | Metodos y sistemas de separacion osmotica |
| ITTO20130760A1 (it) * | 2013-09-20 | 2015-03-21 | Scam S P A | Impianto di dissalazione a scarico liquido zero |
| FR3025509B1 (fr) * | 2014-09-05 | 2020-01-31 | Degremont | Pre-traitement d'eaux chaudes sursaturees |
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| DE10004590A1 (de) * | 1999-11-16 | 2001-05-31 | Joseph Maier | Verfahren zur Wasseraufbereitung und Reststoffbeseitigung sowie Anordnung hierfür |
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| US3676334A (en) * | 1969-05-14 | 1972-07-11 | Envirotech Corp | Wastewater treatment sequence |
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| US6709599B1 (en) * | 1999-10-27 | 2004-03-23 | Rwe Nukem Corporation | Waste water treatment system with slip stream |
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- 2009-02-12 AU AU2009214074A patent/AU2009214074B2/en not_active Ceased
- 2009-02-12 US US12/867,588 patent/US20110062079A1/en not_active Abandoned
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| EP0520920A1 (fr) * | 1991-06-26 | 1992-12-30 | Societe De Traitements Hydrex S.N.C. | Module de filtration, notamment pour le traitement des eaux |
| FR2788054A1 (fr) * | 1999-01-06 | 2000-07-07 | Anjou Rech | Procede et installation pour abattre la teneur en c.o.t et eliminer de facon poussee les composes organiques genants des eaux telles que les eaux de rincage industrielles en vue de leur recyclage |
| DE10004590A1 (de) * | 1999-11-16 | 2001-05-31 | Joseph Maier | Verfahren zur Wasseraufbereitung und Reststoffbeseitigung sowie Anordnung hierfür |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130082001A1 (en) * | 2010-06-09 | 2013-04-04 | Kobelco Eco-Solutions Co., Ltd. | Fresh Water Generating Apparatus and Fresh Water Generating Method |
| US20130206697A1 (en) * | 2010-06-09 | 2013-08-15 | Kobelco Eco-Solutions Co., Ltd. | Fresh Water Generating Apparatus and Fresh Water Generating Method |
| CN102659256A (zh) * | 2012-02-06 | 2012-09-12 | 刘韬 | 农村家用反渗透分质供水纯水机 |
| CN102659256B (zh) * | 2012-02-06 | 2016-08-03 | 刘韬 | 农村家用反渗透分质供水纯水机 |
| CN102826670A (zh) * | 2012-09-19 | 2012-12-19 | 宁波福特恩饮水科技有限公司 | 二次膜过滤水的方法 |
| WO2014177594A1 (fr) * | 2013-05-03 | 2014-11-06 | Ys Lab | Solution marine enrichie en zinc et en potassium |
| FR3005264A1 (fr) * | 2013-05-03 | 2014-11-07 | Ys Lab | Solution marine enrichie en zinc et en potassium |
| CN106219848A (zh) * | 2016-07-21 | 2016-12-14 | 绍兴文理学院 | 一种搅拌型双滤除盐技术 |
| CN106186502A (zh) * | 2016-09-27 | 2016-12-07 | 江苏亚欧环境工程有限公司 | Ro浓水零排放的地下水处理系统及方法 |
| CN106396173A (zh) * | 2016-10-21 | 2017-02-15 | 北京沃特尔水技术股份有限公司 | 一种反渗透浓水处理方法和系统 |
| CN107200409A (zh) * | 2017-05-11 | 2017-09-26 | 上海雷鸣水处理技术有限公司 | 一种废水零排放ro纯水机 |
| CN108383266A (zh) * | 2018-01-21 | 2018-08-10 | 浙江太阳石水处理有限公司 | 一种生态型解决海水淡化饮用水水质口感的系统及工艺 |
| CN108455766A (zh) * | 2018-01-21 | 2018-08-28 | 浙江太阳石水处理有限公司 | 一种智能型解决含油污海水的水处理系统 |
| CN108383266B (zh) * | 2018-01-21 | 2018-12-25 | 浙江太阳石水处理有限公司 | 一种生态型解决海水淡化饮用水水质口感的系统及工艺 |
| CN114426360A (zh) * | 2020-09-16 | 2022-05-03 | 中国石油化工股份有限公司 | 一种煤化工高盐废水的处理系统及处理方法 |
| CN114408984A (zh) * | 2021-12-31 | 2022-04-29 | 宜宾光原锂电材料有限公司 | 前驱体制备过程中母液的循环利用方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2927622A1 (fr) | 2009-08-21 |
| IL207571A0 (en) | 2010-12-30 |
| AU2009214074A1 (en) | 2009-08-20 |
| FR2927622B1 (fr) | 2014-08-01 |
| US20110062079A1 (en) | 2011-03-17 |
| AU2009214074B2 (en) | 2014-07-03 |
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