WO2005047191A1 - L’installation et procede d’epuration d’un effluent aqueux par oxydation et par filtration membranaire. - Google Patents
L’installation et procede d’epuration d’un effluent aqueux par oxydation et par filtration membranaire. Download PDFInfo
- Publication number
- WO2005047191A1 WO2005047191A1 PCT/FR2004/002653 FR2004002653W WO2005047191A1 WO 2005047191 A1 WO2005047191 A1 WO 2005047191A1 FR 2004002653 W FR2004002653 W FR 2004002653W WO 2005047191 A1 WO2005047191 A1 WO 2005047191A1
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- WIPO (PCT)
- Prior art keywords
- effluent
- plant according
- reactor
- purification plant
- membranes
- Prior art date
Links
- 238000000746 purification Methods 0.000 title claims abstract description 25
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 23
- 238000009434 installation Methods 0.000 title claims abstract description 18
- 238000005374 membrane filtration Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 30
- 230000003647 oxidation Effects 0.000 title claims description 19
- 239000012528 membrane Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 38
- 230000001590 oxidative effect Effects 0.000 claims abstract description 33
- 238000011282 treatment Methods 0.000 claims abstract description 31
- 239000003054 catalyst Substances 0.000 claims abstract description 25
- 239000005416 organic matter Substances 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 239000007800 oxidant agent Substances 0.000 claims abstract description 10
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 35
- 239000007789 gas Substances 0.000 claims description 28
- 230000008569 process Effects 0.000 claims description 15
- 239000011368 organic material Substances 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 238000001471 micro-filtration Methods 0.000 claims description 6
- 239000011707 mineral Substances 0.000 claims description 6
- 238000001728 nano-filtration Methods 0.000 claims description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 4
- 238000000108 ultra-filtration Methods 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910003480 inorganic solid Inorganic materials 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 230000009467 reduction Effects 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 239000012466 permeate Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 238000010908 decantation Methods 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- -1 for example Chemical class 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000001089 mineralizing effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- OWFJMIVZYSDULZ-PXOLEDIWSA-N (4s,4ar,5s,5ar,6s,12ar)-4-(dimethylamino)-1,5,6,10,11,12a-hexahydroxy-6-methyl-3,12-dioxo-4,4a,5,5a-tetrahydrotetracene-2-carboxamide Chemical compound C1=CC=C2[C@](O)(C)[C@H]3[C@H](O)[C@H]4[C@H](N(C)C)C(=O)C(C(N)=O)=C(O)[C@@]4(O)C(=O)C3=C(O)C2=C1O OWFJMIVZYSDULZ-PXOLEDIWSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 239000012028 Fenton's reagent Substances 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229920006317 cationic polymer Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- ARYKTOJCZLAFIS-UHFFFAOYSA-N hydrogen peroxide;ozone Chemical compound OO.[O-][O+]=O ARYKTOJCZLAFIS-UHFFFAOYSA-N 0.000 description 1
- 239000003295 industrial effluent Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
- B01D61/027—Nanofiltration
-
- 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
-
- 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
-
- 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
- B01D61/18—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2315/00—Details relating to the membrane module operation
- B01D2315/06—Submerged-type; Immersion type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/168—Use of other chemical agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
- B01D2321/185—Aeration
-
- 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
- B01D61/08—Apparatus therefor
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
Definitions
- the invention relates to the field of the purification of aqueous effluents and applies in particular, but not exclusively: - to the treatment of industrial or domestic wastewater; - the treatment of landfill leachate (percolates); - the treatment of surface water for the purpose of potabilization; - the treatment of depollution of groundwater; - the treatment of membrane filtration concentrates.
- the main purpose of treatment for purifying aqueous effluents is to remove the poorly biodegradable organic matter contained in these effluents.
- Several methods can be implemented to achieve such an objective. It is thus known to filter the effluents on an adsorbent material, such as activated carbon, capable of retaining the organic material they contain.
- Such a technique has the major disadvantage of requiring large amounts of adsorbent material, for a given amount of organic material to eliminate, and therefore to be very expensive. Regeneration of the adsorbent material is itself expensive.
- Other processes use membrane filtration, such as a microfiltration membrane, ultrafiltration, nanofiltration, or reverse osmosis. In addition to being relatively expensive, such processes also have the disadvantage of concentrating the polluting organic material rather than destroying it. This recovered organic material must then be degraded, usually by incineration. Still other processes for removing organic matter implement a step of flocculating it by introducing one or more coagulant compounds in the treated effluents.
- coagulant compounds may be inorganic compounds, such as, for example, polyaluminium chloride, alumina sulphate or ferric chloride or else organic compounds, such as, for example, cationic polymers.
- the flakes formed by the organic matter coagulated can then be removed by decantation.
- Such processes have the major disadvantage of producing a lot of sludge, which is a by-product difficult to eliminate.
- the flocculation step can be combined with an oxidation by introduction into the effluent of the Fenton reagent (H 2 O 2 / Fe 2+ ).
- ozone is the most interesting oxidant, because it is capable of completely destroying organic matter by "mineralizing" it, under certain conditions of use, into carbon dioxide. carbon and mineral salts.
- ozone allows radical reactions involving the free radical OH, which allows the organic material to be very strongly oxidized when it is applied at a basic pH or in combination with hydrogen peroxide or even with ultra-violet radiation.
- - violet the oxy-don reduction potential of hydrogen peroxide is 1.6 volts, that of ozone is 2.07 while that of the OH radical is 2.7).
- the processes employing oxidation thus make it possible to destroy the polluting organic matter contained in the aqueous effluents and not simply to concentrate it as is the case in filtration processes or to separate it from the aqueous phase as is the case in the coagulation-flocculation-decantation processes.
- Such processes show the economic disadvantage of requiring relatively large amounts of oxidizing product (s) to treat a given amount of effluent.
- the purpose of the invention is to provide an aqueous effluent purification process including an optimized oxidation step, that is to say in which the quantity of oxidizing product necessary to treat a given volume of effluent has been reduced compared to conventional oxidation techniques.
- Such a process may be used to purify waters with a high organic matter content, such as certain industrial effluents or leachates for discharging, that is to say water flowing through stored waste.
- These effluents are generally characterized by a very high organic matter load and very little biodegradable.
- these leachates show a BOD 5 / COD ratio that is often less than 0.1, which translates into a very low biodegradability (the BOD 5 represents the "Biological Oxygen Demand" of the effluent and reflects the total amount of organic matter present in the effluent). ).
- the purification of such effluents is therefore problematic since only expensive treatment processes can be used to discharge them from their organic materials.
- Another object of the invention is to provide a purification plant using little product compared to existing techniques of the state of the art.
- said reactor also incorporates a submerged membrane filtration device and said reactor defines a single chamber integrating the oxidation and filtration treatments of said effluent, said chamber being provided such that said effluent and said oxidizing gas are injected cocurrently to said bed of catalyst material and said membrane filtration device.
- the invention therefore proposes a solution for grouping several treatments within the same casing. It will be understood that such an integration offers numerous advantages, among which we can cite: the reduction of the operating costs related to the filtration and to the suspension of the catalyst and / or adsorbent material; - the economic gain from the removal of works and accessories; the space saving induced by the realization of a more compact reactor; - the simplification of the hydraulic scheme with the reduction of equipment.
- the oxidizing gas exerts in the installation according to the invention several functions due to the grouping in a single chamber processing means such as those defined. Firstly, the oxidizing gas naturally has a function of degradation of the organic matter dissolved in the effluent to be treated. The oxidizing gas exerts a second function which is to maintain said material in suspension in the reactor, which makes it possible to optimize the action thereof. Another function of the oxidizing gas is to limit the clogging of the membranes of the filtration device, thanks to the mechanical action of the gas on the membranes, which leads in particular to improving the flow rate of the effluent.
- the grouping according to the invention of injection means for an oxidizing gas such as ozone and a membrane filtration device in the same reactor is an approach contrary to the traditional practices that lead to to separate, with the aid of two separate tanks, the oxidation treatment and the membrane device, the ozone (generally used as an oxidizing gas) being considered by a person skilled in the art as a source of degradation of the membranes.
- the Applicant has found that the integration into the same reactor of oxidation and membrane filtration treatments, does not lead to degradation by ozone membranes after oxidation of the refractory organic matter of the effluent .
- the ozone contributes to limiting the clogging of the membranes, combining the mechanical action of the gas bubbles and possibly the oxidizing action on the clogging organic matter present on the membrane surface, thus increasing the cycle times of the -this.
- this action of the ozone, or more generally of the oxidizing gas, on the membranes is thus more efficient than if one carried out a simple aeration of the membranes by air injection or oxygen injected at the membranes.
- the invention is therefore particularly effective and economical, compared to the traditional approach that would have led the skilled person to use two tanks: one for oxidation with ozone, possibly in the presence of a catalyst , the effluent, the other tank for membrane filtration of the oxidized effluent, this second tank being provided with a specific aeration system membranes.
- this type of installation would lead the possible non ozone catalyst to saturate in the second tank, which risk of course to bring this catalyst to no longer play its role in the first tank once reinjected into it.
- the plant according to the invention makes it possible to obtain a regeneration of the catalyst and / or adsorbent material directly within the reactor, this regeneration advantageously operating continuously.
- said material is constituted by a solid mineral material having a capacity for adsorbing organic materials, preferably doped with metallic substances.
- a bed of a particularly effective and active material is obtained since it optimizes the oxidation action of the oxidizing gas and retains within it a large fraction of the organic matter of the effluent.
- said material is present in said reactor in the form of a fluidized bed.
- said catalyst preferably has a particle size of less than 100 microns and, preferably, a particle size of between about 10 nm and about 40 microns.
- said material comprises at least one of the following belonging to the following group: alumina; - titanium; - coal; - charcoal ; - polymetallic oxides.
- the membranes are micro-filtration membranes.
- the membranes are ultrafiltration membranes.
- the membranes are nano-filtration membranes. Depending on the desired objective, one or the other of these variants will be adopted, this objective being able for example to obtain a simple separation material and treated effluent, with treatment of undesirable substances.
- the membranes are of mineral type.
- the membranes are of organic types.
- said material forms a pre-layer on the surface of said membrane filtration device.
- the cake thus formed by the material on the surface of the membrane tends to substantially improve the filtration performance and treatment of the corresponding membrane.
- Other oxidants such as those mentioned above, may, however, be envisaged by those skilled in the art.
- the installation comprises means for adding H 2 O 2 to said reactor.
- This addition of H 2 O 2 may be carried out continuously or sequentially, its oxidizing power possibly combining with that of ozone.
- the installation comprises a recirculation loop of said effluent in said reactor. In this way, it is possible to ensure a contact time of the effluent with the reagents within the reactor while allowing a fairly steady flow of effluent. In this way, it is possible to increase, if necessary, the effluent treatment times within the reactor.
- said reactor is in the form of a non-mechanically agitated column.
- the invention also relates to a method implemented using the installation which has just been described and characterized in that the integration of said oxidizing gas in said reactor is carried out continuously.
- the contact time between said effluent and said material is between about 5 minutes and about 3 hours, this duration being preferably between about 30 minutes and about 60 minutes.
- the process comprises a step of recirculation of the gas coming from the reactor vent.
- the filtration step is performed by aspiration in external-internal configuration. This step is advantageously carried out with a suction pressure of less than about 1 bar, and preferably with a suction pressure of between about 0.1 bar and about 0.8 bar.
- the installation comprises a reactor 1 having a pipe 9 for delivering the effluent to be treated, an outlet pipe 10 for the treated effluent, a vent 5 in its upper part for the evacuation of gases and recirculation means 6 of this gas at the bottom of the reactor.
- the installation further comprises continuous injection means 2 of ozone in the reactor, which also contains a material 3 in the form of a fluidized bed.
- a membrane filtration device 4 is also integrated in the reactor 1.
- the reactor 1 thus defines a single chamber which integrates both oxidation treatment and filtration of the effluent, this single chamber being provided according to the invention so that the effluent and the oxidizing gas (in this case ozone) is injected cocurrently towards the bed of catalyst material 3 and filtration membranes 4.
- the effluent and the oxidizing gas in this case ozone
- this reactor is realized in the form of a column not mechanically agitated, the injection of the effluent and the oxidizing gas being carried out at the base of the column.
- the injection means 2 of the oxidizing gas are for example constituted by an emulsifier (also called vacuum pump or hydroinjector).
- the material used to improve the reactivity of ozone is a solid mineral powder material present in the reactor in a proportion of between 0.5 g / l and 50 g / l.
- this catalyst material is boehmite alumina ( ⁇ Al 2 O 3 ), calcined at a temperature below 600 ° C. It is noted that boehmite alumina can be used pure or in a form enriched in metallic substances (in particular with a view to increasing its adsorption capacity of organic materials).
- the catalyst material is finely divided so that the diameter of its particles is less than 50 microns (preferably, the particles have a diameter of about 30 microns), the catalyst thus having a very large exchange surface allowing adsorption of most organic matter from the effluent.
- the separation of the catalyst particles contained in the effluent is obtained by the membrane filtration device 4, made using membranes whose pores preferably have dimensions less than 0.1 microns.
- these membranes are made of ceramic or an organic polymer resistant to ozone. It should be noted that, particularly as a function of the particle size of the catalyst, the membranes used may be micro-filtration, ultrafiltration or nano-filtration membranes.
- the transition between the fluidized bed of the catalyst material 3 and the membranes 4 is such that the catalyst forms a pre-layer on the surface of the membranes 4.
- the filtration of the effluent is carried out by suction in external-internal configuration, using a pump 8 provided on the discharge pipe 10, said pump for obtaining a suction pressure of about 0.8 bar.
- a recirculation loop 7 of the effluent by means of which the effluent is recirculated in the reactor, continuously (or semi-continuous according to another possible embodiment).
- a recirculation loop 6 of gases from the vent 5 is also provided.
- COD Chemical Oxygen Demand
- TOC Total Organic Carbon
- the treatment carried out is a treatment with ozone in the presence of a catalyst present at a rate of 20 g / l, the ozone being injected at a rate of 4.7 g O 3 / g COD.
- Tests in continuous mode A second series of tests is carried out continuously.
- An effluent is injected treat in the reactor with a flow rate of 101 / h.
- the oxidation of the effluent is carried out in this reactor in which ozone is injected continuously, the treated water being separated from the catalyst ( ⁇ Al 2 O 3 ) using immersed microfiltration membranes.
- the permeate is not recirculated in the reactor, unlike the semi-continuous mode
- COD Chemical Oxygen Demand
- the treatment carried out is a treatment with ozone alone (without catalyst), the ozone being injected at the rate of 3.8 g O 3 / g COD.
- the results of this test are as follows: - final COD: 104 mg / 1, ie a reduction of 43.8% - final TOC: 44.5 mg / l, with a reduction of 35.7% - quantity O 3 consumed / TOC eliminated: 11.1
- the treatment carried out is a treatment with ozone in the presence of a catalyst present at a rate of 20 g / l, the ozone being injected at a rate of 4.2 g O 3 / g COD.
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
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Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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PL04818446T PL1711435T3 (pl) | 2003-10-30 | 2004-10-15 | Instalacja do oczyszczania wód ściekowych i sposób oczyszczania wód ściekowych przez utlenianie i filtrację membranową |
DE602004030485T DE602004030485D1 (de) | 2003-10-30 | 2004-10-15 | Vorrichtung und verfahren zur reinigung von abwasser durch oxidation und membranfiltration |
JP2006537348A JP2007509740A (ja) | 2003-10-30 | 2004-10-15 | 酸化および膜濾過により水性廃液を精製する装置および方法 |
AU2004289490A AU2004289490B2 (en) | 2003-10-30 | 2004-10-15 | Installation and method for the purification of an aqueous effluent by means of oxidation and membrane filtration |
DK04818446.9T DK1711435T3 (da) | 2003-10-30 | 2004-10-15 | Anlæg og fremgangsmåde til rensning af spildevand ved hjælp af oxidering og membranfiltrering |
AT04818446T ATE490945T1 (de) | 2003-10-30 | 2004-10-15 | Vorrichtung und verfahren zur reinigung von abwasser durch oxidation und membranfiltration |
US10/577,753 US8343359B2 (en) | 2003-10-30 | 2004-10-15 | Installation and method for the purification of an aqueous effluent by means of oxidation and membrane filtration |
EP04818446A EP1711435B1 (fr) | 2003-10-30 | 2004-10-15 | Installation et procede d'epuration d'un effluent aqueux par oxydation et par filtration membranaire. |
BRPI0415926-8A BRPI0415926A (pt) | 2003-10-30 | 2004-10-15 | instalação e processo para a purificação de um efluente aquoso por meio de oxidação e filtração de membrana |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR0312765 | 2003-10-30 | ||
FR0312765A FR2861718B1 (fr) | 2003-10-30 | 2003-10-30 | Installation et procede d'epuration d'un effluent aqueux par oxydation et par filtration membranaire. |
Publications (1)
Publication Number | Publication Date |
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WO2005047191A1 true WO2005047191A1 (fr) | 2005-05-26 |
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Family Applications (1)
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PCT/FR2004/002653 WO2005047191A1 (fr) | 2003-10-30 | 2004-10-15 | L’installation et procede d’epuration d’un effluent aqueux par oxydation et par filtration membranaire. |
Country Status (16)
Country | Link |
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US (1) | US8343359B2 (fr) |
EP (1) | EP1711435B1 (fr) |
JP (1) | JP2007509740A (fr) |
KR (1) | KR20060114333A (fr) |
CN (1) | CN100420634C (fr) |
AT (1) | ATE490945T1 (fr) |
AU (1) | AU2004289490B2 (fr) |
BR (1) | BRPI0415926A (fr) |
DE (1) | DE602004030485D1 (fr) |
DK (1) | DK1711435T3 (fr) |
ES (1) | ES2358647T3 (fr) |
FR (1) | FR2861718B1 (fr) |
PL (1) | PL1711435T3 (fr) |
RU (1) | RU2359919C2 (fr) |
WO (1) | WO2005047191A1 (fr) |
ZA (1) | ZA200603434B (fr) |
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2004
- 2004-10-15 JP JP2006537348A patent/JP2007509740A/ja active Pending
- 2004-10-15 AU AU2004289490A patent/AU2004289490B2/en not_active Ceased
- 2004-10-15 RU RU2006118297/15A patent/RU2359919C2/ru not_active IP Right Cessation
- 2004-10-15 WO PCT/FR2004/002653 patent/WO2005047191A1/fr active Application Filing
- 2004-10-15 BR BRPI0415926-8A patent/BRPI0415926A/pt active Search and Examination
- 2004-10-15 DE DE602004030485T patent/DE602004030485D1/de not_active Expired - Lifetime
- 2004-10-15 PL PL04818446T patent/PL1711435T3/pl unknown
- 2004-10-15 KR KR1020067009523A patent/KR20060114333A/ko not_active Application Discontinuation
- 2004-10-15 US US10/577,753 patent/US8343359B2/en not_active Expired - Fee Related
- 2004-10-15 ES ES04818446T patent/ES2358647T3/es not_active Expired - Lifetime
- 2004-10-15 EP EP04818446A patent/EP1711435B1/fr not_active Expired - Lifetime
- 2004-10-15 CN CNB2004800346837A patent/CN100420634C/zh not_active Expired - Fee Related
- 2004-10-15 AT AT04818446T patent/ATE490945T1/de active
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Also Published As
Publication number | Publication date |
---|---|
KR20060114333A (ko) | 2006-11-06 |
PL1711435T3 (pl) | 2011-08-31 |
US8343359B2 (en) | 2013-01-01 |
ATE490945T1 (de) | 2010-12-15 |
EP1711435A1 (fr) | 2006-10-18 |
US20070023363A1 (en) | 2007-02-01 |
FR2861718B1 (fr) | 2006-03-03 |
ZA200603434B (en) | 2007-06-27 |
AU2004289490A1 (en) | 2005-05-26 |
AU2004289490B2 (en) | 2009-12-17 |
JP2007509740A (ja) | 2007-04-19 |
RU2006118297A (ru) | 2007-12-20 |
DK1711435T3 (da) | 2011-03-21 |
ES2358647T3 (es) | 2011-05-12 |
CN100420634C (zh) | 2008-09-24 |
BRPI0415926A (pt) | 2006-12-26 |
DE602004030485D1 (de) | 2011-01-20 |
RU2359919C2 (ru) | 2009-06-27 |
EP1711435B1 (fr) | 2010-12-08 |
CN1886345A (zh) | 2006-12-27 |
FR2861718A1 (fr) | 2005-05-06 |
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