FR2940269A1 - Compact unit for wastewater treatment, comprises first unit for separating solids contained in wastewater, aeration basin, water membrane filtration unit, sludge dehydrating unit, water overpressurizing unit, and transfer unit - Google Patents
Compact unit for wastewater treatment, comprises first unit for separating solids contained in wastewater, aeration basin, water membrane filtration unit, sludge dehydrating unit, water overpressurizing unit, and transfer unit Download PDFInfo
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- FR2940269A1 FR2940269A1 FR0807152A FR0807152A FR2940269A1 FR 2940269 A1 FR2940269 A1 FR 2940269A1 FR 0807152 A FR0807152 A FR 0807152A FR 0807152 A FR0807152 A FR 0807152A FR 2940269 A1 FR2940269 A1 FR 2940269A1
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- Prior art keywords
- unit
- water
- membrane filtration
- basin
- aeration
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- 238000005273 aeration Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000005374 membrane filtration Methods 0.000 title claims abstract description 30
- 239000010802 sludge Substances 0.000 title claims abstract description 25
- 239000002351 wastewater Substances 0.000 title claims abstract description 14
- 239000007787 solid Substances 0.000 title claims abstract description 13
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 8
- 238000012546 transfer Methods 0.000 title description 4
- -1 aeration basin Substances 0.000 title 1
- 238000009792 diffusion process Methods 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims abstract description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000012423 maintenance Methods 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 239000011574 phosphorus Substances 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000012510 hollow fiber Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
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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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
- C02F3/1273—Submerged membrane bioreactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1242—Small compact installations for use in homes, apartment blocks, hotels or the like
- C02F3/1247—Small compact installations for use in homes, apartment blocks, hotels or the like comprising circular tanks with elements, e.g. decanters, aeration basins, in the form of segments, crowns or sectors
-
- 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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- 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
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
UNITE COMPACTE DE TRAITEMENT D'EAUX USEES [0001] L'invention se rapporte au domaine du traitement des eaux usées et/ou eaux de pluie, dans une seule unité. [0002] Plus spécifiquement il s'agit de traiter des eaux usées dans une unité compacte, de petite et moyenne capacité, et de conception et de mise en oeuvre simples. [0003]On connaît des unités réalisant ce type de traitement qui présentent des capacités de traitement variées, allant par exemple de 500 à 20.000 Equivalent Habitants. Ces installations comprennent généralement des bâtiments séparés, disséminés sur une surface non négligeable d'au moins 0,5 ha. [0004] Ces dispositions constituent un problème car il n'est pas toujours possible de trouver une telle surface disponible, notamment à proximité des agglomérations urbaines et/ou des lieux de rejet des eaux traitées. [0005] D'autre part, des bâtiments séparés impliquent de disposer entre eux des tuyauteries et/ou autres moyens de liaison pour faire transiter les eaux usées ou d'autres éléments nécessaires au fonctionnement de l'unité. Ceci a un coût , rend le fonctionnement difficile. [0006] L'invention vise à remédier aux inconvénients de l'état de la technique et 20 notamment à proposer une unité de traitement d'eaux usées, compacte qui soit fiable et d'un fonctionnement aisé et peu coûteux. [0007] Pour ce faire, est proposée selon l'invention une unité compacte de traitement d'eaux usées comprenant un premier moyen de séparation de matières solides contenues dans les eaux usées qui sont introduites dans l'unité, un bassin 25 d'aération, un moyen de filtration membranaire des eaux relativement au sens d'écoulement des eaux dans l'unité, un moyen de déshydratation des boues, un moyen de mise en surpression de l'air dans le bassin d'aération, un moyen de transfert des boues déshydratées. [0008]Conformément à l'invention, lesdits moyens sont agencés de telle sorte que le moyen de filtration membranaire est un bassin de forme cylindrique, d'axe vertical dans lequel sont immergés des modules de filtration membranaire, en ce que ledit bassin d'aération est disposé en anneau autour dudit moyen de filtration membranaire, et en ce que le premier moyen de séparation de matières solides, les moyens de déshydratation des boues, le moyen de mise en surpression et les locaux d'exploitation sont disposés dans des locaux juxtaposés au bassin d'aération et extérieurement audit bassin de filtration membranaire. [0009] Par ailleurs, l'unité selon l'invention comprend en outre un moyen de stockage des boues déshydratées placé dans un local juxtaposant le local où sont disposées les moyens de déshydratation des boues. Cette disposition optimise non seulement la surface occupée par l'unité, mais en outre elle en facilite l'accès et l'ergonomie . [0010] En outre, l'unité comprend un moyen de mesure du débit des eaux traitées 15 qui en sortent. [0011] De plus, ledit premier moyen de séparation comprend un tamis susceptible d'être isolé du reste de l'unité pendant des opérations de maintenance et/ou de disfonctionnement , par des vannes actionnables manuellement. Cet aspect permet un contrôle aisé et précis des eaux usées qui sont introduites dans l'unité, 20 grâce à une élimination efficace de la plupart des matières solides dès leur introduction dans l'unité. [0012]Selon un mode préféré de réalisation de l'invention, lesdits modules de filtration membranaire comprennent des membranes à fibres creuses tressées, regroupées, disposées verticalement et traversées de bas en haut par les eaux à 25 traiter. [0013] De façon avantageuse, des rampes destinées à la diffusion de bulles d'air sont immergées au fond dudit bassin d'aération, préférentiellement diamétralement opposées à un moyen de mise en mouvement des eaux à traiter lui-même placé à proximité de l'entrée desdites eaux usées dans ledit bassin 30 d'aération annulaire ; cet agencement favorise la création d'un courant circulaire dans ledit bassin. Cet aspect facilite grandement la fluidité de la circulation des eaux dans ledit bassin annulaire. [0014] De façon particulière, les moyens de mise en surpression sont directement reliés aux rampes de diffusion des bulles et additionellement aux moyens de filtration membranaire. [0015]Avantageusement, l'unité comprend en outre des moyens de commande et de contrôle permettant de réaliser une aération intermittente dans ledit bassin d'aération. [0016] De plus, l'unité peut comprendre un moyen de stockage d'un réactif chimique destiné à éliminer le phosphore dans les eaux traitées sortant de l'unité, ledit moyen étant disposé dans un local juxtaposé audit bassin d'aération. [0017] D'autres caractéristiques, détails et avantages de l'invention ressortiront à la lecture de la description qui suit, en référence à l'unique figure annexée qui illustre un plan de masse de l'unité selon un mode préféré de réalisation de l'invention. [0018] Pour plus de clarté, les éléments identiques ou similaires sont repérés par des signes de référence identiques sur cette figure. [0019] D'autres objets et avantages de l'invention apparaîtront au cours de la description qui suit, faite en référence à la figure unique annexée représentant une vue de dessus de l'unité compacte de traitement des eaux usées. [0020] L'unité compacte de traitement d'eaux usées comprend un premier moyen de séparation de matières solides contenues dans les eaux usées (1) qui sont introduites dans l'unité, un bassin d'aération (2), un moyen de filtration membranaire des eaux (3) relativement au sens d'écoulement des eaux dans l'unité, un moyen de déshydratation des boues, un moyen de mise en surpression de l'air dans le bassin d'aération, un moyen de transfert des boues déshydratées. [0021] Plus particulièrement, le premier moyen de séparation de matières solides (1) contenues dans les eaux usées qui sont introduites dans l'unité. Ledit premier moyen de séparation de matières solides comprend un tamis automatique de maille 1 mm susceptible d'être isolé du reste de l'unité pendant des opérations de maintenance et/ou de disfonctionnement, par des vannes actionnables manuellement. Cet aspect permet une élimination efficace de la plupart des matières solides dès leur introduction dans l'unité. [0022]Avantageusement, le bassin d'aération (2) comprend des rampes immergées (20) en EPDM destinées à la diffusion de bulles d'air et un moyen (21) de mise en mouvement des eaux à traiter disposé diamétralement à l'opposé dans ledit bassin d'aération (2). Les rampes immergées (20) apportant l'oxygène nécessaire aux réactions biologiques sont installées en fond de bassin et relevable par grue. Ledit moyen (21) de mise en mouvement des eaux à traiter est un agitateur immergé à grandes pales. La création d'un courant dans ce bassin assure un mélange homogène de la biomasse avec la pollution à dégrader et combiné avec l'aération, il permet un cisaillement des bulles d'air. Les bulles ainsi créées sont très fines, ce qui augmente fortement le transfert d'oxygène dans la phase liquide. [0023] Plus particulièrement, l'aération dans ledit bassin d'aération(2) est régulé par des moyens de commande et de contrôle permettant de réaliser une aération intermittente. Lesdits moyens sont une sonde de mesure redox et/ou d'oxygène dissous commandé(s) par un automate disposé dans le local technique (9) juxtaposé audit bassin d'aération (2). [0024] L'unité comprend en outre un moyen de stockage d'un réactif chimique destiné à éliminer le phosphore dans les eaux traitées sortant de l'unité, ledit moyen étant disposé sur une dalle (7) juxtaposé audit bassin d'aération (2). Le réactif chimique est stocké en extérieur dans une cuve double peau en PEHD. [0025]Avantageusement, le moyen de filtration membranaire est un bassin (3) de forme cylindrique, d'axe vertical dans lequel sont immergés des modules (30) de filtration membranaire. Lesdits modules de filtration membranaire comprennent des membranes à fibres creuses tressées, regroupées, disposées verticalement et traversées de bas en haut par les eaux à traiter. Lesdits modules sont immergées et présentent des pores d'environ 0,1 micron. Au moyen d'une pression réduite, le perméat est aspiré à l'intérieur de la fibre alors que les particules en suspension restent à l'extérieur. [0026] L'unité présente un local (5) où sont regroupés les moyens de mise en surpression d'air directement relié aux rampes (20) de diffusion des bulles et additionellement aux moyens de filtration membranaire (30). Cette injection d'air au niveau desdits moyens de filtrations permet de récurer la surface de membranes pour prévenir tout colmatage et de créer un gradient de densité entre l'intérieur et l'extérieur des membranes immergées, facilitant ainsi leur traversée. [0027] Plus particulièrement, l'unité comprend en outre un moyen (4) de mesure du débit des eaux traitées sortant de l'unité assuré par un canal équipé d'une forme venturi et d'une sonde de mesure ultrasons permettant de compter et de totaliser le débit de sortie des eaux traitées. [0028]Avantageusement, l'unité comprend en outre un moyen de stockage (8) des boues déshydratées placé à l'extérieur juxtaposant le local (6) où sont disposées les moyens de déshydratation des boues et de transfert des boues déshydratées. Ladite déshydratation est assurée par une centrifugeuse. Ledit moyen de transfert des boues déshydratées est une pompe gaveuse qui envoie lesdites boues déshydratées dans ledit moyen de stockage assuré par une benne. The invention relates to the field of the treatment of wastewater and / or rainwater, in a single unit. More specifically it is to treat wastewater in a compact unit of small and medium capacity, and simple design and implementation. There are known units performing this type of treatment that have various processing capabilities, for example from 500 to 20,000 Equivalent inhabitants. These installations generally comprise separate buildings scattered over a significant area of at least 0.5 ha. These provisions are a problem because it is not always possible to find such a surface available, especially near urban agglomerations and / or places of discharge of treated water. On the other hand, separate buildings involve arranging between them piping and / or other connecting means for passing waste water or other elements necessary for the operation of the unit. This has a cost, makes the operation difficult. The invention aims to overcome the disadvantages of the state of the art and in particular to provide a compact wastewater treatment unit that is reliable and easy to operate and inexpensive. [0007] To this end, a compact wastewater treatment unit is proposed according to the invention, comprising a first solids separation means contained in the wastewater which is introduced into the unit, a ventilation tank. , a means for membrane filtration of the water with respect to the direction of flow of water in the unit, a means for dewatering the sludge, a means for placing overpressure of the air in the aeration basin, a means for transferring the dehydrated sludge. According to the invention, said means are arranged such that the membrane filtration means is a cylindrical basin, of vertical axis in which are immersed membrane filtration modules, in that said basin of aeration is arranged in a ring around said membrane filtration means, and in that the first solid separation means, the sludge dewatering means, the pressurizing means and the operating rooms are arranged in adjacent rooms. to the aeration basin and externally to said membrane filtration basin. Furthermore, the unit according to the invention further comprises a dehydrated sludge storage means placed in a local juxtaposing the room where are arranged the sludge dewatering means. This arrangement not only optimizes the area occupied by the unit, but also facilitates access and ergonomics. In addition, the unit comprises a means for measuring the flow of treated water 15 coming out. In addition, said first separation means comprises a screen capable of being isolated from the rest of the unit during maintenance operations and / or malfunction, by manually operable valves. This aspect allows easy and accurate control of the wastewater which is introduced into the unit, through effective removal of most solids as soon as they are introduced into the unit. According to a preferred embodiment of the invention, said membrane filtration modules comprise braided hollow fiber membranes, grouped together, arranged vertically and traversed from bottom to top by the waters to be treated. Advantageously, ramps for the diffusion of air bubbles are immersed in the bottom of said aeration basin, preferably diametrically opposed to a means for setting water to be treated itself placed near the water. entering said wastewater into said annular aeration tank; this arrangement promotes the creation of a circular current in said basin. This aspect greatly facilitates the fluidity of the flow of water in said annular basin. In particular, the overpressure means are directly connected to the bubble diffusion ramps and additionally to the membrane filtration means. Advantageously, the unit further comprises control and control means for performing intermittent aeration in said aeration basin. In addition, the unit may comprise a storage means for a chemical reagent for removing phosphorus in treated water leaving the unit, said means being disposed in a room juxtaposed said aeration basin. Other features, details and advantages of the invention will emerge on reading the description which follows, with reference to the single appended figure which illustrates a ground plane of the unit according to a preferred embodiment of FIG. the invention. For clarity, identical or similar elements are identified by identical reference signs in this figure. Other objects and advantages of the invention will become apparent from the following description, with reference to the single appended figure showing a top view of the compact wastewater treatment unit. The compact wastewater treatment unit comprises a first solids separation means contained in the wastewater (1) which are introduced into the unit, a ventilation tank (2), a means of membrane filtration of water (3) relative to the direction of flow of water in the unit, a sludge dewatering means, a means for placing overpressurized air in the aeration basin, a sludge transfer means dried. More particularly, the first solids separation means (1) contained in the wastewater that is introduced into the unit. Said first solids separation means comprises an automatic screen of 1 mm mesh capable of being isolated from the rest of the unit during maintenance and / or malfunctioning operations, by manually actuatable valves. This aspect allows for effective removal of most solids as soon as they are introduced into the unit. Advantageously, the aeration tank (2) comprises immersed ramps (20) in EPDM for the diffusion of air bubbles and a means (21) for setting in motion the water to be treated arranged diametrically to the opposite in said aeration basin (2). The submerged ramps (20) supplying the oxygen necessary for the biological reactions are installed at the bottom of the pond and can be lifted by crane. Said means (21) for moving water to be treated is a submerged agitator with large blades. The creation of a current in this basin ensures a homogeneous mixture of the biomass with the pollution to be degraded and combined with the aeration, it allows a shearing of the air bubbles. The bubbles thus created are very thin, which greatly increases the oxygen transfer in the liquid phase. More particularly, the ventilation in said aeration basin (2) is controlled by control and control means for performing intermittent aeration. Said means are a redox measurement probe and / or dissolved oxygen controlled (s) by a controller disposed in the technical room (9) juxtaposed to said aeration basin (2). The unit further comprises a means for storing a chemical reagent for removing phosphorus in the treated water leaving the unit, said means being disposed on a slab (7) juxtaposed with said aeration basin ( 2). The chemical reagent is stored outdoors in a HDPE double skin tank. Advantageously, the membrane filtration means is a basin (3) of cylindrical shape, vertical axis in which are immersed modules (30) of membrane filtration. Said membrane filtration modules comprise hollow fiber membranes which are braided, grouped together, arranged vertically and traversed from bottom to top by the waters to be treated. Said modules are immersed and have pores of about 0.1 micron. By means of a reduced pressure, the permeate is sucked into the interior of the fiber while the suspended particles remain outside. The unit has a room (5) where are grouped air overpressure means directly connected to the ramps (20) of the bubbles and additionally to the membrane filtration means (30). This injection of air at said filtering means makes it possible to scour the membrane surface to prevent any clogging and to create a density gradient between the inside and the outside of the immersed membranes, thus facilitating their crossing. More particularly, the unit further comprises a means (4) for measuring the flow of treated water leaving the unit provided by a channel equipped with a venturi form and an ultrasonic measuring probe for counting and totalize the output flow of the treated water. Advantageously, the unit further comprises a storage means (8) of dewatered sludge placed outside juxtaposing the room (6) where are arranged the sludge dewatering means and dehydrated sludge transfer. Said dehydration is provided by a centrifuge. Said means for transferring dewatered sludge is a gaveuse pump which sends said dewatered sludge into said storage means provided by a bucket.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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FR0807152A FR2940269B1 (en) | 2008-12-19 | 2008-12-19 | COMPACT TREATMENT UNIT FOR WASTEWATER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR0807152A FR2940269B1 (en) | 2008-12-19 | 2008-12-19 | COMPACT TREATMENT UNIT FOR WASTEWATER |
Publications (2)
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FR2940269A1 true FR2940269A1 (en) | 2010-06-25 |
FR2940269B1 FR2940269B1 (en) | 2011-09-16 |
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FR0807152A Expired - Fee Related FR2940269B1 (en) | 2008-12-19 | 2008-12-19 | COMPACT TREATMENT UNIT FOR WASTEWATER |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PT106438A (en) * | 2012-07-09 | 2014-01-09 | Jose Domingos Cardoso De Moura | RESIDUAL WATER TREATMENT SYSTEM WITH SEPARATION OF OPTIMIZED SOLIDS BY MICROBOLHES PRODUCED IN MEMBRANAS |
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US2027370A (en) * | 1934-01-24 | 1936-01-14 | Frank S Currie | Apparatus for treating sewage |
DE29508347U1 (en) * | 1995-05-23 | 1995-08-03 | Diering Bernd Dr Ing | Plant for the biological treatment of waste water |
GB2329634A (en) * | 1997-09-30 | 1999-03-31 | Aw Creative Technologies Ltd | Activated sludge treatment plant |
US6197203B1 (en) * | 1998-04-08 | 2001-03-06 | Chiyoda Kohan Co., Ltd. | Filtration method and filtration apparatus |
JP2003024973A (en) * | 2001-07-16 | 2003-01-28 | Kubota Corp | Membrane separation type oxidation ditch |
DE20315451U1 (en) * | 2003-10-08 | 2003-12-24 | Zapf Gmbh | Small sewage processing tank, to give water suitable for flushing toilets has a micro-filtration module in front of the outflow to retain bacteria and increase the activated sludge |
-
2008
- 2008-12-19 FR FR0807152A patent/FR2940269B1/en not_active Expired - Fee Related
Patent Citations (6)
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US2027370A (en) * | 1934-01-24 | 1936-01-14 | Frank S Currie | Apparatus for treating sewage |
DE29508347U1 (en) * | 1995-05-23 | 1995-08-03 | Diering Bernd Dr Ing | Plant for the biological treatment of waste water |
GB2329634A (en) * | 1997-09-30 | 1999-03-31 | Aw Creative Technologies Ltd | Activated sludge treatment plant |
US6197203B1 (en) * | 1998-04-08 | 2001-03-06 | Chiyoda Kohan Co., Ltd. | Filtration method and filtration apparatus |
JP2003024973A (en) * | 2001-07-16 | 2003-01-28 | Kubota Corp | Membrane separation type oxidation ditch |
DE20315451U1 (en) * | 2003-10-08 | 2003-12-24 | Zapf Gmbh | Small sewage processing tank, to give water suitable for flushing toilets has a micro-filtration module in front of the outflow to retain bacteria and increase the activated sludge |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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PT106438A (en) * | 2012-07-09 | 2014-01-09 | Jose Domingos Cardoso De Moura | RESIDUAL WATER TREATMENT SYSTEM WITH SEPARATION OF OPTIMIZED SOLIDS BY MICROBOLHES PRODUCED IN MEMBRANAS |
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FR2940269B1 (en) | 2011-09-16 |
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