EP1773463A1 - Dispositif de prélèvement d'eau clarifiée pour bassin et bassin correspondant. - Google Patents
Dispositif de prélèvement d'eau clarifiée pour bassin et bassin correspondant.Info
- Publication number
- EP1773463A1 EP1773463A1 EP05775260A EP05775260A EP1773463A1 EP 1773463 A1 EP1773463 A1 EP 1773463A1 EP 05775260 A EP05775260 A EP 05775260A EP 05775260 A EP05775260 A EP 05775260A EP 1773463 A1 EP1773463 A1 EP 1773463A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- sampling device
- sampling
- basin
- central recess
- 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- Withdrawn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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims description 75
- 239000010802 sludge Substances 0.000 description 7
- 238000013019 agitation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 241000157049 Microtus richardsoni Species 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000002837 heart atrium Anatomy 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 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
- 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
- C02F3/1263—Sequencing batch reactors [SBR]
-
- 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
- B01D21/0027—Floating sedimentation devices
-
- 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
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- 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
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2444—Discharge mechanisms for the classified liquid
-
- 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
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
-
- 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
- C02F3/20—Activated sludge processes using diffusers
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Definitions
- Clarified water sampling device for basin and corresponding basin.
- the field of the invention is that of wastewater treatment. More specifically, the invention relates to equipment used in wastewater treatment plants, for the treatment of wastewater, whether industrial or domestic.
- a commonly used technique is the SBR (Sequencing Batch Reactor). It involves bringing the water into contact with the activated sludge and alternately carrying out aeration and settling sequences. In these stations, it is therefore conventional to use a single basin for oxygenation, agitation and water decantation (according to alternating sequences).
- SBR Sequencing Batch Reactor
- the general rate of the station is a function of the duration of each phase.
- the quality of treatment imposes a minimum time for each phase, in particular as regards the settling and the withdrawal of treated water.
- sampling is often done in the basin.
- the invention aims to provide a basin for wastewater treatment plant in which the surface water sampling means retain the accessibility benefits, while allowing to increase the sampling rates compared to the solutions of the prior art.
- the object of the invention is to provide such sampling means which make it possible to increase the sampling rates compared with the prior art, without agitating the lower layers of the basin.
- Another object of the invention is to provide such sampling means which offer extensive possibilities of adjusting the sampling rate.
- the invention also aims to provide such sampling means which are stable on the surface of the water, including in case of strong agitation of the waters of the basin. Another object of the invention is to provide such sampling means which are simple in design and easy to implement.
- a clarified water sampling device intended to equip a basin, of type comprising a floating crown having a central recess to inside which said clarified water is intended to be collected by a sampling member connected to means for collecting said clarified water, characterized in that it comprises means for preferential flow of water to promote said water withdrawal at least from a peripheral zone of said floating crown rather than from another.
- sampling rates can reach 150 m 3 / h. Also, with such flow rates, when reducing the water passage section on one side of the sampling device, the increase in the water velocity taken from the side in question can take on significant proportions, at the point of shake the sludge.
- the invention therefore makes it possible to place the sampling device in the basin so that the device is very accessible, while maintaining the possibility of sampling with a sustained flow without risk of affecting the quality of the sample.
- said water flow means are provided at least on said sampling member.
- said sampling member comprises a wall delimiting an internal space for collecting said clarified water, said wall having means for passing said water towards said internal space, said passage means being more extensive on another part of said wall only on a part of said wall.
- said sampling member preferably has at least one fluted portion on a portion of its periphery.
- said preferential water flow means are also provided on said floating crown.
- said preferential water flow means provided on said floating ring extend over an angular portion substantially coincident with that over which the flow means preferably provided on said sampling member extend.
- said preferential flow means extend over approximately 180 °.
- said floating ring has a bottom in which, or in the vicinity of which are provided at least two portions angular, one allowing the passage of water from the outside of said ring to said central recess with a first flow, the other having at least one recess allowing the passage of water from the outside of said crown to said central recess with a second rate higher than said first rate.
- said floating ring has a bottom in which is formed at least one concave trough with respect to the outside of said ring and extending between the periphery of said ring and said central recess.
- the distribution of the flow rate of the water entering the crown is influenced by simple, effective and easily achievable means.
- said sampling member is adjustable in height within said central recess.
- the sampling point is thus easily adjusted, that is to say the level at which the sampling member is placed under the surface of the water, this all the more easily as the invention makes it possible to place the device in basin edge.
- the sampling device preferably has two gussets intended to each accommodate a substantially vertical axis mounted in said basin.
- said gussets have a bottom at right angles with side walls, said vertical axes having a round section.
- the invention also relates to a pool equipped with a type of sampling device comprising a floating ring having a central recess in which said clarified water is intended to be collected by a sampling member connected to means for collecting said clarified water, characterized in that it comprises means for preferential flow of water to promote said water withdrawal, at least from a peripheral zone of said floating crown rather than from another.
- said sampling device is positioned in the vicinity of the periphery of said basin.
- said sampling device is mounted movably between two substantially vertical axes.
- Figure 1 is a top view of a basin equipped with water sampling means according to the invention
- Figures 2 and 3 are views respectively in cross section and from above of a water sampling device according to the invention.
- the invention applies to basins of purification plants using the SBR technique, that is to say in which aeration phases (also known as oxygenation) are successively carried out. stirring and settling.
- aeration phases also known as oxygenation
- a basin delimited by a concrete web 1 has a ventilation zone 2, stirring means 3 and at least one sampling device 4. It is recalled that in such basins, the water to be treated is contacted with activated sludge that settles at the bottom of the pond during settling.
- the sampling device is of the type illustrated in FIGS. 2 and 3. As shown in these figures, the sampling device comprises a floating ring 41 having a central recess 411 inside which is mounted a sampling member 42 for collecting the clarified water, this member being connected to collection means (not shown).
- the operating principle is as follows: the floating crown holds the sampling member 42 at a predetermined level with respect to the surface 10 of the water, the water entering the central recess 411 of the crown as indicated by arrows Fl by the principle of communicating vessels.
- the water is then collected by the sampling member 42.
- clarified water is collected on the surface while avoiding collecting any supernatant residues 101, for example fats on the surface of the water, the floating ring 41 obstructing them.
- the floating ring 41 has an open structure delimiting an annular space 412 that can be used for introducing a ballast, in order to regulate the immersion of the device.
- the ring has a diameter of 1200 mm, its central recess a diameter of 400 mm, the height of the ring being 500 mm.
- the sampling device comprises means for preferential flow of water to favor sampling from a peripheral zone rather than from another.
- these preferential flow means are provided to increase the flow around the part 4b of the device, to the detriment of the water flow taken around the part 4a.
- these preferential flow means are produced by arranging water passages tending to widen the mouth of one side of the periphery of the member 42.
- these water passages are made by forming a portion having grooves 421 on half of the periphery of the mouth of the sampling member 42.
- grooves 421 here have a triangular shape, and could have other shapes, for example oblong, or rectangular in other embodiments conceivable. These water passages could also be made by providing orifices
- a preferential flow of water is favored by also providing particular means in the structure of the floating crown.
- the bottom of the floating ring 41 has chutes 413 (concave with respect to the outside of the ring), the flow rate in these chutes being increased as indicated by the double arrows. (the flow outside these chutes being symbolized by a simple arrow).
- these chutes are four in number and are regularly distributed on the part 4b of the device. This part 4b corresponds to the part of the device on which the sampling member has preferential flow means.
- the water passages in the member 42 and the troughs 413 may have other shapes and / or other dimensions, in particular with a view to calibrating them differently according to the differences in flow rate that is desired. generate during the withdrawal of water at the periphery of the device.
- the sampling member 42 is mounted height-adjustable inside the central recess of the floating crown 41.
- the member 42 has atria capable of sliding along rods 414 carried by the floating ring 41.
- the member 42 has at its base a rotating flange 423 to be connected to a flexible tube.
- the floating ring 41 carries two gussets 415 diametrically opposed, each for receiving a substantially vertical axis mounted in the basin.
- the gussets 415 have a rectangular section while the axes 11 are cylindrical.
- the sampling device according to the invention which has just been described is therefore particularly suitable for positioning in the vicinity of the concrete veil 1 of the basin, as illustrated by FIG.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Microbiology (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Analytical Chemistry (AREA)
- Sewage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0408543A FR2873724B1 (fr) | 2004-08-02 | 2004-08-02 | Dispositif de prelevement d'eau clarifiee pour bassin et bassin correspondant |
| PCT/FR2005/001380 WO2006024708A1 (fr) | 2004-08-02 | 2005-06-06 | Dispositif de prélèvement d'eau clarifiée pour bassin et bassin correspondant. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1773463A1 true EP1773463A1 (fr) | 2007-04-18 |
Family
ID=34948248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05775260A Withdrawn EP1773463A1 (fr) | 2004-08-02 | 2005-06-06 | Dispositif de prélèvement d'eau clarifiée pour bassin et bassin correspondant. |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7534343B2 (fr) |
| EP (1) | EP1773463A1 (fr) |
| KR (1) | KR20070046883A (fr) |
| AU (1) | AU2005279105B2 (fr) |
| CA (1) | CA2576773C (fr) |
| FR (1) | FR2873724B1 (fr) |
| MA (1) | MA28807B1 (fr) |
| TN (1) | TNSN07033A1 (fr) |
| WO (1) | WO2006024708A1 (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011001916B3 (de) * | 2011-04-08 | 2012-05-16 | Udo Nagel | Absaugschwimmer und Sammelvorrichtung sowie Sammelschiff |
| US20120285894A1 (en) | 2011-05-13 | 2012-11-15 | Frank Leslie Smiddy | System and method for the treatment of wastewater |
| FR2985918B1 (fr) | 2012-01-20 | 2015-10-23 | Veolia Water Solutions & Tech | Dispositif de prelevement d'eau clarifiee |
| US9255025B2 (en) | 2012-07-20 | 2016-02-09 | ProAct Services Corporation | Method for the treatment of wastewater |
| US9394673B2 (en) * | 2013-03-15 | 2016-07-19 | Thirsty Duck, Lp | Skimmer system |
| WO2018032036A1 (fr) * | 2016-07-05 | 2018-02-22 | RBH Engineering Pty Ltd | Prise de liquide flottante |
| AU2018100258A4 (en) | 2017-12-22 | 2018-04-05 | Turret IP Pty Ltd | Floating liquid intake |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1450545A (en) * | 1920-04-13 | 1923-04-03 | Oscar E Hans | Apparatus for separating liquids of different densities |
| US1644248A (en) * | 1926-04-16 | 1927-10-04 | Red Sun Products Co | Decanting and filtering float device |
| US3970556A (en) * | 1974-09-23 | 1976-07-20 | Douglas John Gore | Floating skimmer for cleaning the surface of a body of liquid, method and apparatus |
| US4695376A (en) * | 1986-10-20 | 1987-09-22 | Aqua-Aerobic Systems, Inc. | Floating decanter |
| US4746424A (en) * | 1986-11-03 | 1988-05-24 | Drew Richard H | Floating swimming pool skimmer |
| US5104528A (en) * | 1990-09-24 | 1992-04-14 | Christie Stanley E | Floating decanter |
| US5139363A (en) * | 1990-10-12 | 1992-08-18 | Jenkins John T | Oil recovery apparatus and method |
| DE9101241U1 (de) * | 1991-02-04 | 1991-05-02 | Bödrich & Strecker Anlagenbau, 7209 Deilingen | Oberflächenabzugsvorrichtung für Flüssigkeiten |
| US5874003A (en) * | 1997-06-25 | 1999-02-23 | Rose; Bryan L. | Wastewater treatment apparatus with floating clarifier |
| AT3001U1 (de) * | 1998-11-05 | 1999-08-25 | Kurt Gassner | Vorrichtung zum abzug von klarwasser aus kläranlagen |
| WO2000078424A1 (fr) * | 1999-06-22 | 2000-12-28 | Gore Douglas J | Decanteur flottant pour liquide surnageant |
| DE10112339B4 (de) * | 2001-03-13 | 2006-03-23 | Niehüsener, Wilhelm | Vorrichtung zum Abziehen einer vorgegebenen Flüssigkeitsmenge aus einem Flüssigkeitsreservoir mit veränderlichem Flüssigkeitsspiegel |
| WO2002094411A1 (fr) * | 2001-05-23 | 2002-11-28 | Ashbrook Corporation | Decanteur flottant |
-
2004
- 2004-08-02 FR FR0408543A patent/FR2873724B1/fr not_active Expired - Fee Related
-
2005
- 2005-06-06 AU AU2005279105A patent/AU2005279105B2/en not_active Ceased
- 2005-06-06 EP EP05775260A patent/EP1773463A1/fr not_active Withdrawn
- 2005-06-06 KR KR1020077004333A patent/KR20070046883A/ko not_active Ceased
- 2005-06-06 CA CA2576773A patent/CA2576773C/fr not_active Expired - Fee Related
- 2005-06-06 US US11/573,021 patent/US7534343B2/en not_active Expired - Fee Related
- 2005-06-06 WO PCT/FR2005/001380 patent/WO2006024708A1/fr not_active Ceased
-
2007
- 2007-02-01 TN TNP2007000033A patent/TNSN07033A1/en unknown
- 2007-02-21 MA MA29691A patent/MA28807B1/fr unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006024708A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2873724B1 (fr) | 2006-10-06 |
| KR20070046883A (ko) | 2007-05-03 |
| AU2005279105A1 (en) | 2006-03-09 |
| WO2006024708A1 (fr) | 2006-03-09 |
| TNSN07033A1 (en) | 2008-06-02 |
| AU2005279105B2 (en) | 2010-06-03 |
| CA2576773C (fr) | 2012-12-04 |
| MA28807B1 (fr) | 2007-08-01 |
| US7534343B2 (en) | 2009-05-19 |
| US20070227986A1 (en) | 2007-10-04 |
| FR2873724A1 (fr) | 2006-02-03 |
| CA2576773A1 (fr) | 2006-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20070116 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DEBUIRE, JACQUES Inventor name: GOMEZ, JEAN Inventor name: ESPOSITO, PATRICK |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DEBUIRE, JACQUES Inventor name: ESPOSITO, PATRICK Inventor name: GOMEZ, JEAN |
|
| 17Q | First examination report despatched |
Effective date: 20071107 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20160105 |