EP1951630A1 - Procede de traitement d'eaux comprenant une etape de decantation et une etape de tamisage fin, et dispositif correspondant - Google Patents
Procede de traitement d'eaux comprenant une etape de decantation et une etape de tamisage fin, et dispositif correspondantInfo
- Publication number
- EP1951630A1 EP1951630A1 EP06819231A EP06819231A EP1951630A1 EP 1951630 A1 EP1951630 A1 EP 1951630A1 EP 06819231 A EP06819231 A EP 06819231A EP 06819231 A EP06819231 A EP 06819231A EP 1951630 A1 EP1951630 A1 EP 1951630A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- water treatment
- micrometers
- treatment device
- coagulation
- 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.)
- Withdrawn
Links
- 238000010908 decantation Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 35
- 238000012216 screening Methods 0.000 title abstract 2
- 238000004065 wastewater treatment Methods 0.000 title abstract 2
- 244000045947 parasite Species 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 78
- 238000011282 treatment Methods 0.000 claims description 47
- 238000007873 sieving Methods 0.000 claims description 32
- 238000005189 flocculation Methods 0.000 claims description 16
- 230000016615 flocculation Effects 0.000 claims description 16
- 239000003153 chemical reaction reagent Substances 0.000 claims description 15
- 230000015271 coagulation Effects 0.000 claims description 15
- 238000005345 coagulation Methods 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 239000000701 coagulant Substances 0.000 claims description 9
- 230000001590 oxidative effect Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000008394 flocculating agent Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 230000000249 desinfective effect Effects 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000000460 chlorine Substances 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- OSVXSBDYLRYLIG-UHFFFAOYSA-N chlorine dioxide Inorganic materials O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004155 Chlorine dioxide Substances 0.000 claims description 3
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 3
- 238000005660 chlorination reaction Methods 0.000 claims description 3
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 238000006385 ozonation reaction Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 2
- 239000003456 ion exchange resin Substances 0.000 claims description 2
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims 1
- 239000003643 water by type Substances 0.000 abstract description 4
- 235000013601 eggs Nutrition 0.000 description 15
- 239000002351 wastewater Substances 0.000 description 13
- 238000001914 filtration Methods 0.000 description 9
- 108010034145 Helminth Proteins Proteins 0.000 description 8
- 244000000013 helminth Species 0.000 description 8
- 230000002262 irrigation Effects 0.000 description 7
- 238000003973 irrigation Methods 0.000 description 7
- 239000004576 sand Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical class ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229920006318 anionic polymer Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D3/00—Differential sedimentation
- B03D3/02—Coagulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D3/00—Differential sedimentation
- B03D3/06—Flocculation
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
-
- 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
- C02F2209/40—Liquid flow rate
-
- 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
- C02F2303/04—Disinfection
-
- 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
- C02F2305/12—Inert solids used as ballast for improving sedimentation
Definitions
- Water treatment process comprising a decantation step and a fine sieving step, and corresponding device.
- the field of the invention is that of water treatment. More specifically, the invention relates to a physical or physio-chemical process for reducing the content of suspended matter or parasites of such water, as well as the device corresponding to this process.
- the invention can be used to treat any water containing suspended solids which it is desirable to reduce the content, such as in particular: - wastewater already treated biologically, in order to refine the purification of these; wastewater intended to be reused after treatment, for example in industry or agriculture, particularly for irrigation; - water intended for discharge at sea;
- the method and the device according to the invention are particularly useful for treating suspended solids contained in water intended to be reused for irrigation.
- wastewater is more and more frequently reused in irrigation, as well for the irrigation of crops as for that of municipal green spaces or golf courses for example.
- the wastewater is treated to remove the pollution to be a hazard to the quality of the environment receiving treated wastewater.
- microbiology is more and more often taken into account in the treatment needs, with the frequent setting up of finishing treatments, by water exposure. treated with ultraviolet or by final filtration on membranes, for example.
- the prior art recommends using sand beds with a maximum filtration rate of 10 m / h.
- the invention particularly aims to provide a water treatment process which is less expensive than the methods of the prior art.
- the invention also aims to propose a water treatment device which involves reduced size equipment compared to those of the prior art.
- the invention also aims to provide such a method and / or such a device that is suitable for water treatment for both irrigation and industry, or for use as drinking water .
- the invention which has for object a method of water treatment aimed at cutting down their content of suspended matter, and in particular parasites, comprising a step of decantation consisting of passing said water through a decanter, at a treatment speed greater than 10 m / h, characterized in that said decantation step is followed by a fine sieving step using a sieve whose meshes have dimensions of between about 5 micrometers and about 25 micrometers.
- the method according to the invention makes it possible to obtain results at less as good as with the processes of the prior art which advocate three steps (decantation, coarse sieving and filtering multi-layer filter) and that they do not suggest that a process combining only two steps, including one rapid settling and a fine sieving, can achieve the desired pest removal.
- said fine sieving step is carried out using a sieve whose meshes have dimensions of between about 8 micrometers and about 12 micrometers.
- helminth eggs are able to ovalize to pass through sieve meshes, it unexpectedly appeared, in tests conducted by the Applicant, that the remaining eggs after decantation are slaughtered. sufficiently large by sieving between 8 and 12 micrometers so that all the waters tested have a helminth egg concentration below the limit of 1 egg per liter after sieving.
- said decantation step is preceded by a coagulation / flocculation step.
- said coagulation / flocculation step is obtained by recirculation of sludges from said decantation step, with addition to said waters of at least one coagulating agent and at least one flocculating agent.
- said flocculation step is preferably carried out at a speed of at least 20 m / h.
- said step of coagulation / flocculation is obtained by adding in said water at least one coagulating agent, at least one flocculating agent, and at least one water-insoluble granular ballast material.
- said flocculation / coagulation step is preferably carried out at a speed of at least 30 m / h.
- it comprises a step, downstream of said decantation step, of injection of an oxidizing reagent.
- said step of injecting an oxidizing reagent is preferably carried out upstream of said sieving step.
- said oxidizing reagent comprises at least one of the reagents belonging to the following group:
- the method comprises a step, upstream of said sieving step, of injecting a pulverulent reagent comprising at least one of the reagents belonging to the following group:
- a treatment of dissolved pollutants comprises, downstream of said sieving step, a step of disinfection of said water by UV radiation.
- the process comprises, downstream of said settling step and upstream of said sieving step, a step of disinfection of said water by UV radiation.
- the invention also relates to a water treatment device for to reduce their content of suspended matter, and in particular parasites, comprising at least one decanter, characterized in that it comprises, downstream of said decanter, at least one sieve whose mesh has dimensions of between about 5 microns and about 25 microns, and preferably between about 8 micrometers and about 12 micrometers.
- said decanter is of the coagulation / flocculation / settling type with ballast.
- said settler is advantageously associated with a ballast comprising a granular material of a specific weight greater than that of water and with a mean diameter of between about 50 microns and about 250 microns.
- said one or more sieves are of the disc or drum type.
- it comprises means for unclogging said one or more sieves.
- said declogging means preferably comprise means for spraying a washing water under pressure.
- the device advantageously comprises means for disinfecting said wash water before recirculation upstream of said decanter.
- said means for disinfecting said wash water are chosen from the following techniques: - chlorination; ozonation; UV radiation.
- said spraying means spray countercurrently with respect to said water to be treated.
- the device comprises means for recirculation of washing water upstream of said decanter.
- FIG. 1 is a schematic representation of the principle of the invention
- FIG. 2 is a schematic view of a water treatment device according to a preferred embodiment of the invention.
- the principle of the invention lies in successively passing waste water, raw or biologically treated, in a decanter 1, then in a sieving system 2, outside the decanter and a mesh of between 5 and 25 micrometers, preferably between 8 and 12 micrometers.
- ballast may for example be constituted by sand.
- the decantation technique used will be preceded by a coagulation step 3, in line or in a coagulation tank, with injection 31 of a mineral salt or a cationic polyelectrolyte, and a flocculation phase 4 with injection 41 of anionic or cationic poly (anionic) polymer.
- the decanter 1 is a sludge recirculation settler, with addition of at least one coagulating agent and a flocculating agent, operating at a speed of at least 20 m / h.
- the decanter 1 is a weighted floc settler, with the addition of at least one coagulating agent, a flocculating agent, and a water-insoluble granular ballast material, operating at a speed of less than 30 m / h, the ballast is used in said decanter 1 being a granular material with a specific weight greater than that of water and with a mean diameter of between 50 and 250 microns.
- the sieving step is carried out on sieves outside the decanter and downstream from it, to allow a control of the clogging of the sieve and the cleaning thereof.
- the screen is preferably 10 microns mesh and disk or drum type, the disk type being preferred.
- the preferred sieving direction is from inside the disk or the drum to the outside, while the sieve will preferably be equipped with washing systems 21 by water spraying, with nozzles or injection bars preferentially arranged on the outside. outside the sieve, injecting the water against the current of the sieving direction.
- "Hydrotech” (registered trademark) type disk screens were used, which made it easy to wash through externally accessible nozzles when the screen began to clog.
- the concentrations of suspended solids were divided by a factor greater than 20 at the same time, by the passage into flocculation / settling ballasted sieving.
- the settling / sieving treatment thus makes it possible to considerably reduce the content of suspended solids in the treated water, and promotes the polishing of this water by the use of complementary treatments, such as: the treatment of pollutants dissolved by injection of powder reagents, such as activated carbon powder or grain, or by resins ion exchangers; disinfection of water by oxidizing reagent, such as ozone, hydrogen peroxide, chlorine, sodium hypochlorite, chlorine dioxide or chloramines, or by UV radiation. It should be noted that the UV can be applied after sieving, in order to benefit from the reduction of the content of suspended matter (MS) by sieving.
- powder reagents such as activated carbon powder or grain, or by resins ion exchangers
- oxidizing reagent such as ozone, hydrogen peroxide, chlorine, sodium hypochlorite, chlorine dioxide or chloramines
- UV radiation can be applied after sieving, in order to benefit from the reduction of the content of suspended matter (MS) by sieving.
- the UV can also be applied upstream of the sieving, taking into account the good quality of the settled water.
- the washing water of the sieves is preferably recycled 22 upstream of the settling tank, so as to be refloculated and decanted. Most preferably, the wash water is disinfected by the action of an oxidant 23 before returning to the decanter.
- wash waters can be disinfected by chlorination, ozonation or UV radiation.
- the same process chain can be applied with advantage to the treatment of surface water such as river or lake water, in particular to remove suspended matter, and microorganisms larger than about 5 micrometers , but also dissolved heavy metals and color.
- the treatment can also be completed by an oxidative disinfection or UV treatment.
Landscapes
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0511525A FR2893258B1 (fr) | 2005-11-14 | 2005-11-14 | Procede de traitement d'eaux comprenant une etape de decantation et une etape de tamisage fin, et dispositif correspondant. |
PCT/EP2006/068046 WO2007054461A1 (fr) | 2005-11-14 | 2006-11-02 | Procede de traitement d'eaux comprenant une etape de decantation et une etape de tamisage fin, et dispositif correspondant |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1951630A1 true EP1951630A1 (fr) | 2008-08-06 |
Family
ID=36215742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06819231A Withdrawn EP1951630A1 (fr) | 2005-11-14 | 2006-11-02 | Procede de traitement d'eaux comprenant une etape de decantation et une etape de tamisage fin, et dispositif correspondant |
Country Status (14)
Country | Link |
---|---|
US (1) | US7981297B2 (zh) |
EP (1) | EP1951630A1 (zh) |
KR (1) | KR101320327B1 (zh) |
CN (1) | CN101309870B (zh) |
AR (1) | AR058517A1 (zh) |
AU (1) | AU2006311109B2 (zh) |
CA (1) | CA2626786C (zh) |
FR (1) | FR2893258B1 (zh) |
IL (1) | IL191012A (zh) |
MA (1) | MA29948B1 (zh) |
NO (1) | NO20081932L (zh) |
TN (1) | TNSN08215A1 (zh) |
WO (1) | WO2007054461A1 (zh) |
ZA (1) | ZA200804827B (zh) |
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US20100213123A1 (en) * | 2007-01-09 | 2010-08-26 | Marston Peter G | Ballasted sequencing batch reactor system and method for treating wastewater |
CN101568388B (zh) | 2007-01-09 | 2013-09-18 | 西门子工业公司 | 用于去除工业废水中溶解的污染物、颗粒污染物和油类污染物的系统 |
US8470172B2 (en) | 2007-01-09 | 2013-06-25 | Siemens Industry, Inc. | System for enhancing a wastewater treatment process |
US20110036771A1 (en) | 2007-01-09 | 2011-02-17 | Steven Woodard | Ballasted anaerobic system and method for treating wastewater |
WO2010083149A2 (en) * | 2009-01-13 | 2010-07-22 | Access Business Group International Llc | Gravity feed water treatment system |
US9682876B2 (en) | 2011-05-13 | 2017-06-20 | ProAct Services Corporation | System and method for the treatment of wastewater |
CA3202964A1 (en) | 2011-12-06 | 2013-06-13 | Delta Faucet Company | Ozone distribution in a faucet |
RU2489360C1 (ru) * | 2012-02-10 | 2013-08-10 | Общество с ограниченной ответственностью "АйПиСолюшинс" | Способ определения рабочих доз коагулянта в процессах очистки природных вод |
CA2873081C (en) | 2012-06-11 | 2020-12-29 | Evoqua Water Technologies Llc | Treatment using fixed film processes and ballasted settling |
US9255025B2 (en) | 2012-07-20 | 2016-02-09 | ProAct Services Corporation | Method for the treatment of wastewater |
WO2014018452A1 (en) * | 2012-07-24 | 2014-01-30 | Aquero Company, Llc | Process for reducing soluble organic content in recovered water |
AU2013323431B2 (en) | 2012-09-26 | 2017-10-12 | Evoqua Water Technologies Llc | System for measuring the concentration of magnetic ballast in a slurry |
US10190710B2 (en) | 2013-12-27 | 2019-01-29 | ClearCove Systems, Inc. | Foldable drain pipe for a decanter in a water treatment system |
US9855518B2 (en) | 2013-12-27 | 2018-01-02 | ClearCove Systems, Inc. | Method and apparatus for a vertical lift decanter system in a water treatment system |
US9782696B2 (en) | 2013-12-27 | 2017-10-10 | ClearCove Systems, Inc. | Method for maximizing uniform effluent flow through a waste water treatment system |
US9744482B2 (en) | 2013-12-27 | 2017-08-29 | ClearCove Systems, Inc. | Screen decanter for screening solids from waste water |
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US7678278B2 (en) * | 2006-09-29 | 2010-03-16 | Otv S.A. Sa | Method of treating water with an inorganic powder reagent |
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2005
- 2005-11-14 FR FR0511525A patent/FR2893258B1/fr not_active Expired - Fee Related
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2006
- 2006-11-02 US US12/093,524 patent/US7981297B2/en not_active Expired - Fee Related
- 2006-11-02 CA CA2626786A patent/CA2626786C/en not_active Expired - Fee Related
- 2006-11-02 EP EP06819231A patent/EP1951630A1/fr not_active Withdrawn
- 2006-11-02 CN CN2006800424661A patent/CN101309870B/zh not_active Expired - Fee Related
- 2006-11-02 WO PCT/EP2006/068046 patent/WO2007054461A1/fr active Application Filing
- 2006-11-02 AU AU2006311109A patent/AU2006311109B2/en not_active Ceased
- 2006-11-02 KR KR1020087011373A patent/KR101320327B1/ko not_active IP Right Cessation
- 2006-11-10 AR ARP060104935A patent/AR058517A1/es not_active Application Discontinuation
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2008
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- 2008-04-27 IL IL191012A patent/IL191012A/en not_active IP Right Cessation
- 2008-05-13 TN TNP2008000215A patent/TNSN08215A1/en unknown
- 2008-05-15 MA MA30927A patent/MA29948B1/fr unknown
- 2008-06-03 ZA ZA200804827A patent/ZA200804827B/xx unknown
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See references of WO2007054461A1 * |
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CA2626786A1 (en) | 2007-05-18 |
NO20081932L (no) | 2008-06-09 |
US20080296228A1 (en) | 2008-12-04 |
FR2893258B1 (fr) | 2008-01-11 |
FR2893258A1 (fr) | 2007-05-18 |
KR101320327B1 (ko) | 2013-10-23 |
MA29948B1 (fr) | 2008-11-03 |
WO2007054461A1 (fr) | 2007-05-18 |
US7981297B2 (en) | 2011-07-19 |
TNSN08215A1 (en) | 2009-10-30 |
KR20080067652A (ko) | 2008-07-21 |
CN101309870A (zh) | 2008-11-19 |
ZA200804827B (en) | 2009-03-25 |
IL191012A (en) | 2015-03-31 |
AU2006311109A1 (en) | 2007-05-18 |
AU2006311109B2 (en) | 2010-09-16 |
AR058517A1 (es) | 2008-02-06 |
CN101309870B (zh) | 2010-12-08 |
CA2626786C (en) | 2014-08-12 |
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