WO2013090518A1 - Waste water installation and method for reducing high content of harmful fluids in waste water - Google Patents
Waste water installation and method for reducing high content of harmful fluids in waste water Download PDFInfo
- Publication number
- WO2013090518A1 WO2013090518A1 PCT/US2012/069407 US2012069407W WO2013090518A1 WO 2013090518 A1 WO2013090518 A1 WO 2013090518A1 US 2012069407 W US2012069407 W US 2012069407W WO 2013090518 A1 WO2013090518 A1 WO 2013090518A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- waste water
- distribution plate
- vessel
- inlet opening
- outlet opening
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
- B01D19/0047—Atomizing, spraying, trickling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0021—Degasification of liquids by bringing the liquid in a thin layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/234—Surface aerating
-
- 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
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/18—Tanks for disinfecting, neutralising, or cooling 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
- C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/08—Treatment of wastewater in the sewer, e.g. to reduce grease, odour
Abstract
According to a first aspect the present invention relates to a waste water installation for reducing high content of harmful fluids in the waste water, comprising a vessel (2) having an inlet opening (7) for incoming waste water and an outlet opening (8) for outgoing waste water, the inlet opening (7) in the vertical direction being arranged at a level above said outlet opening (8), and a stationary distribution plate (11) that is arranged direct under said inlet opening (7) and in the vertical direction arranged at a level above said outlet opening (8), said distribution plate (11) presenting an upper surface (12) arranged to receive and distribute the from the inlet opening (79 incoming waste water and a peripheral edge (13) over which the waste water is arranged to flow. The waste water installation is characterized in that the distribution plate (11) comprises at least one distribution bracket (15) that is connected to and project upwards at an angle to the upper surface (12) of the distribution plate (11). According to a second aspect the present invention relates to a method for reducing high content of harmful fluids in waste water.
Description
WASTE WATER INSTALLATION AND METHOD FOR REDUCING HIGH CONTENT OF HARMFUL FLUIDS IN WASTE WATER
Technical field of the Invention
The present invention relates in general to a waste water installation, or pre station, to be used in connection with a pump station. The present invention relates specifically to a waste water installation for reducing high content of harmful fluids in waste water, the waste water installation comprising a vessel having an inlet opening for incoming waste water and an outlet opening for outgoing waste water, said inlet opening in the vertical direction being arranged at a level above said outlet opening, and a stationary distribution plate that is arranged direct under said inlet opening and in a vertical direction arranged at a level above said outlet opening, said distribution plate presenting an upper surface arranged to receive and distribute the from the inlet opening incoming waste water and a peripheral edge over which the waste water is arranged to flow.
According to a second aspect the present invention relates to a method for reducing high content of harmful fluids in waste water .
Background of the Invention
In connection with housing areas that are located at such a location that the waste water generated by those living in the area must be pumped to a greater sewage system or to a sewage treatment plant, at least one pump station is present to which a number of households are connected. Such an installation is usually fully functional and does not disturb those living in the area.
However, problem may arise for instance in connection with a pump station serving few households in a scattered housing area. The structure of such a housing area involve long piping from each household to the pump station and relatively small flows of waste water, which bring about that the waste water risk to be standing in the piping under long periods of time. When the waste water becomes standing in the
piping biological degradation processes of the organic
material present in the waste water will consume all the available oxygen in the piping. This entail that further degradation of the organic material in the waste water will be anaerobic, i.e. without access to oxygen, leading to the generation of hydrogen sulphide (H2S) . The hydrogen sulphide is conveyed by the waste water, dissolved in the waste water and/or as a gas, to the pump station and causes several problems .
One big problem for those living in the area is that the hydrogen sulphide generates a must unpleasant smell that is easily spread in the housing area due to the fact that pump stations are not completely air tight. A big problem for the pump station as such is that the hydrogen sulphide cause metal components as well as concrete components to corrode. To the group of metal components belongs for instance pumps,
electronic, sensors, bracings, etc, and to the group concrete components belongs for instance pump sumps, large pipelines, etc .
Thereto, hydrogen sulphide, when present in high
concentration in the air, is very harmful to inhale. The hydrogen sulphide may cause paralysis of the respiration system, leading to unconsciousness, of the person inhaling air having a high concentration of hydrogen sulphide. This may also be a problem for the maintenance staff.
Known ways of trying to solve above mentioned problems are for instance to add oxygen containing chemicals to the waste water, to reduce the dwell time in the piping to a minimum by pumping the waste water from the respective
household to the pump station, etc.
Object of the Invention
The present invention aims at providing an improved waste water installation and method for reducing high content of harmful fluids in waste water.
A basic object of the present invention is to provide an improved waste water installation of initially defined type,
which is easy to install and call for little of no maintenance .
Another object of the present invention is to provide a waste water installation, that prevents different components present in the pump station to be subjected to corrosion.
It is another object of the present invention to provide a waste water installation that does not emit any unpleasant smell .
Brief description of the Invention
According to the invention at least the basic object is attained by means of the initially defined waste water installation and method, having the features defined in the independent claims. Preferred embodiments of the present invention are further defined in the dependent claims.
According to a first aspect of the present invention it is provided a waste water installation of the initially defined type, which is characterized in that the distribution plate comprises at least one distribution bracket connected to and projecting upwards at an angle to the upper surface of the distribution plate.
According to a second aspect of the present invention it is provided a method, which comprises the steps of in a vessel receive a mixture of a flow of incoming waste water and a flow of harmful gases via an inlet opening, convey the incoming waste water flow towards an upper surface of a distribution plate arranged in the vessel, which distribution plate comprises at least one distribution bracket connected to and projecting upwards at an angle to the upper surface of the distribution plate, distribute the waste water flow over the upper surface of the distribution plate, flow the distributed waste water flow over a peripheral edge of the distribution plate, wherein the harmful fluids reacts with the oxygen and is dissolved in the waste water, and flow the waste water out of the vessel via an outlet opening.
Thus, the present invention is based on the insight that by increasing the contact area between the waste water and the
air volume present in the vessel, when the waste water enters the vessel, the harmful fluid will easier set free from the waste water and react with the oxygen in the vessel and thereafter dissolve as an harmless fluid in the waste water.
According to a preferred embodiment of the present invention, the distribution plate is connected to and project at an angle to an inner surface of the vessel. This entail above all that the distribution plate and the vessel may be manufactured in one piece, which simplifies handling and installation .
According to a preferred embodiment the upper surface of the distribution plate is flat and is inclined in relation to a horizontal plane, wherein the angle of inclination is more than 30 degrees and less than 60 degrees. A more level inclination entail that solid matter in the waste water risk to accumulate on the distribution plate and a more steep inclination entail that the incoming flow of waste water will not be distributed enough and thereby it is a risk that the contact area between the waste water and the air volume of the vessel is not increased to the reguired extent.
Preferably the distribution plate comprises a rim enclosing at least a part of the upper surface of the
distribution plate, wherein said peripheral edge of the distribution plate is constituted by the upper edge of the rim. The rim entails that the waste water is retained and thereby a greater distribution of the incoming waste water is provided .
It is also preferred that the waste water installation comprises an aerator arranged at the bottom of the vessel, wherein the aerator is arranged to add oxygen to the waste water that the vessel is intended to house and to the air volume of the vessel. The aerator provide an additional contribution of oxygen in order to reduce the harmful fluid in the waste water .
Further advantages with and features of the invention will be apparent from the other dependent claims as well as from the following detailed description of preferred
embodiments .
Brief description of the drawing
A more complete understanding of the abovementioned and other features and advantages of the present invention will be apparent from the following detailed description of preferred embodiments in conjunction with the appended drawings, wherein :
Fig. 1 is a schematic, cross sectional perspective view of an inventive waste water installation according to a first embodiment,
Fig. 2 is a schematic, cross sectional perspective view of an inventive waste water installation according to a second embodiment,
Fig. 3 is a schematic view from above of the waste water
installation according to figure 2, and
Fig. 4 is a schematic, cross sectional perspective view of the waste water installation according to figures 2 and 3.
Detailed description of preferred embodiments
The present invention relates in general to handling of waste water, for instance in connection to a pump station (not shown) . By waste water is especially intended waste water from households, which waste water among other things comprises solid matter in the form of organic material.
Reference is initially made to figure 1, in which an inventive waste water installation, generally designated 1, is shown. The waste water installation 1, is in practice
constituted by a pre station to a pump station (not shown), wherein harmful fluids such as hydrogen sulphide can be neutralized/reduced by reacting with oxygen and be dissolved in the waste water, and thereby be prevented from entering the pump station in the form of a harmful fluid. It shall be pointed out that the inventive waste water installation 1 in this connection preferably be located in close connection with the pump station, otherwise the harmful fluids risk to once again develop during the transportation to the pump station,
which transportation takes place under the influence of gravity. However, the distance shall be long enough to secure that the neutralized hydrogen sulphide that has been
transformed to sulphuric acid manage to become dissolved in the waste water. A preferred distance is about 20 meters.
Oxygen present in the waste water downstream the waste water installation, for instance in said pump station, will move upstream into the waste water installation and thereby add oxygen to the waste water housed in the waste water
installation .
The waste water installation 1 comprises a vessel 2 for temporarily house waste water, the vessel 2 comprising a bottom 3, a circumferential wall 4 extending upwards from said bottom 3 and having an inner surface 5 and a free upper edge 6. Thereto the vessel comprises an inlet opening 7 for incoming flow and an outlet opening 8 for outgoing flow. Said inlet opening 7 and said outlet opening 8 are preferably arranged in the wall 4 of the vessel 2, however, it is feasible that said outlet opening 8 is arranged in the bottom 3 of the vessel 2. In the case the outlet opening 8 is arranged in the wall 4, the outlet opening 8 shall be located as close as possible to the bottom 3 of the vessel 2 in order to prevent accumulation of solid matter in the vessel 2.
Thereto, the bottom 3 of the vessel 2 may be inclined in the direction towards the outlet opening 8 in order to further prevent accumulation of solid matter in the vessel 2.
Furthermore, the inlet opening 7 shall be arranged at a level above said outlet opening 8. Preferably, the vessel 2 is made of glass fiber, plastics, or other such corrosion-resistant material .
The inlet opening 7 is intended to be connected to an incoming conduit 9, wherein a mixture of a flow of incoming waste water and a flow of harmful fluids are conveyed into the vessel 2, thereto the outlet opening 8 is intended to be connected to an outgoing conduit 10 in order to admit an outflow of outgoing waste water. The harmful fluids can be dissolved in the waste water or be gaseous.
The inventive waste water installation 1 comprises furthermore a stationary distribution plate 11 that is arranged direct under said inlet opening 7 and in a vertical direction arranged at a level above said outlet opening 8. The distribution plate 11 presents an upper surface 12 arranged to receive and distribute the from the inlet opening 7 incoming waste water and a peripheral edge 13 over which the waste water is arranged to flow. During operation the incoming flow of waste water will leave the inlet opening 7 and flow/ splash down to the upper surface 12 of the distribution plate 11, whereupon the flow will be distributed over said upper surface 12. By harmful fluid is intended at first hand hydrogen sulphide (H2S) in vapour phase of in liguid phase, which shall be treated as synonymous terms in this connection.
When the waste water enters the vessel 2 the hydrogen sulphide in vapour phase will leave the inlet opening 7 and be collected in the air volume present above the waste water housed in the vessel 2.
When the waste water flow/splash down onto the upper surface 12 of the distribution plate 11, is distributed over said upper surface 12, and thereafter flows over the
peripheral edge 13 of the distribution plate 11 and further towards the bottom 3 of the vessel 2, the contact
area/interface between the waste water and the air volume in the vessel 2 is increased. This in its turn entail that the hydrogen sulphide present in the liguid phase more easily will be transformed to the vapour phase in the air volume above the waste water .
In the moist air layer above the waste water in the vessel 2 the hydrogen sulphide will react/oxidize with the available oxygen and transform into sulphuric acid, according to the formula H2S + 202 -> H2S04, wherein the sulphuric acid will condense at the inner wall 5 of the vessel 2, trickle downwards and become dissolved in the waste water. Thus, the content of harmful fluids in the vessel 2 is reduced and instead waste water having a low concentration of sulphuric acid (H2S04) is obtained.
Preferably the distribution plate 11 is connected to and projects at an angle to the inner surface 5 of the vessel 2, as is shown in figure 1. According to a not disclosed
alternative embodiment the distribution plate 11 may be constituted by a plate having a circumferential peripheral edge that is located at a distance from the inner surface of the vessel, for instance the distribution plate 11 in this not disclosed embodiment may be cone shaped having a cone angle between 60 and 120 degrees. In the embodiment disclosed in figure 1 the upper surface 12 of the distribution plate 11 is flat and is inclined in relation to a horizontal plane, which angle of inclination is preferably more than 30 degrees and less than 60 degrees. In an alternative not disclosed
embodiment the peripheral edge of the distribution plate 11 may be arched upwards .
Reference is now especially made to figures 2-4, which together discloses an inventive waste water installation 1 according to a second, preferred embodiment.
According to this embodiment the distribution plate 11 comprises a rim 14 that enclose at least a part of the upper surface 12 of the distribution plate 11. The rim 14 projects upwards from the upper surface 12 of the distribution plate 11, preferably at a right angle, an upper edge of the rim 14 constituting at least a part of the peripheral edge 13 of the distribution plate 11. The rim 14 has the object of
temporarily dam up the waste water flow that has strike the upper surface 12 of the distribution plate 11, in order to guarantee that the waste water flow will flow over an as long part as possible of the peripheral edge 13 of the distribution plate 11. In the shown embodiment the upper edge of the rim 14 is saw tooth shaped, however, the upper edge of the rim 14 may present other shapes, such as straight, wave shaped, arch shaped upwards, etc.
Furthermore the distribution plate 11 comprises at least one distribution bracket 15 that is connected to and projects upwards at an angle to the upper surface 12 of the
distribution plate 11. The object of said at least one distribution bracket 15 is to further guarantee that the waste
water is distributed evenly over the upper surface 12 of the distribution plate 11. In the shown embodiment two separate distribution brackets 15 are present, each directed downwards- outwards on each side of a centreline of the distribution plate 11.
In the shown embodiment a pipe bend 16 is arranged in connection to the inlet opening 7, in the purpose of directing the incoming flow of waste water towards the upper surface 12 of the distribution plate 11. The pipe bend 16 is in the shown embodiment a 90 degrees pipe bend turned downwards. However, it is feasible that said pipe bend is turned upwards in order to obtain a greater spread when the waste water leaves the pipe bend and more splash effect when the waste water hits the upper surface 12 of the distribution plate 11. The presence of a pipe bend is preferred when the incoming waste water is pressurized .
The waste water installation 1 comprises preferably a detachable lid 17, see figure 2, which in mounted state is tight against the vessel 2 in the area of the upper edge 6 of the vessel 2. The lid 17 shall during normal operation, except during service, be connected to the vessel 2 in order to prevent spreading of smelling gases .
In the embodiment disclosed in figures 2-4, the waste water installation 1 comprises preferably as well an aerator 18 arranged at the bottom 3 of the vessel 2. The aerator 18 is arranged to add air bubbles to the waste water that the vessel 2 is intended to house, in order to add oxygen to the air volume above the waste water. The aerator 18 may be operated continuously or intermittent, depending on the access of oxygen in the vessel 2. A non-disclosed air conduit provides compressed air to the aerator 18 from a compressed air source, for instance an external compressor. The aerator 18 is in the shown embodiment a so called disc diffuser comprising a membrane having a large number of holes/slits through which the compressed air is forced forming small bubbles of air.
However, it shall be stated that also other types of aerators can be used. Preferably, the aerator 18 in the vertical
direction is arranged at a level under the outlet opening 8, in order to secure that the waste water covers the aerator 18.
Feasible modifications of the invention
The invention is not limited only to the embodiments described above and shown in the drawings, which primarily have an illustrative and exemplifying purpose. This patent application is intended to cover all adjustments and variants of the preferred embodiments described herein, thus the present invention is defined by the wording of the appended claims and thus the equipment may be modified in all kinds of ways within the scope of the appended claims.
It shall also be pointed out that all information about/concerning terms such as above, under, upper, lower, etc., shall be interpreted/read having the equipment oriented according to the figures, having the drawings oriented such that the references can be properly read. Thus, such terms only indicates mutual relations in the shown embodiments, which relations may be changed if the inventive equipment is provided with another structure/design.
It shall also be pointed out that even thus it is not explicitly stated that features from a specific embodiment may be combined with features from another embodiment, the combination shall be considered obvious, if the combination is possible.
Throughout this specification and the claims which follows, unless the context requires otherwise, the word "comprise", and variations such as "comprises" or
"comprising", will be understood to imply the inclusion of a stated integer or steps or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps .
Claims
1. A waste water installation for reducing high content of harmful fluids in waste water, comprising a vessel (2) having an inlet opening (7) for incoming waste water and an outlet opening (8) for outgoing waste water, the inlet opening (7) in the vertical direction being arranged at a level above said outlet opening (8), and a stationary distribution plate (11) that is arranged direct under said inlet opening (7) and in the vertical direction arranged at a level above said outlet opening (8), said distribution plate (11) presenting an upper surface (12) arranged to receive and distribute the from the inlet opening (79 incoming waste water and a peripheral edge (13) over which the waste water is arranged to flow,
characterized in that the distribution plate (11) comprises at least one distribution bracket (15) that is connected to and project upwards at an angle to the upper surface (12) of the distribution plate (11) .
2. The waste water installation according to claim 1,
characterized in that the distribution plate (11) is connected to and project at an angle to an inner surface (5) of the vessel ( 2 ) .
3. The waste water installation according to claim 1 or 2, characterized in that the upper surface (12) of the
distribution plate (11) is flat and is inclined in relation to a horizontal plane, the inclination angle being more than 30 degrees and less than 60 degrees.
4. The waste water installation according to any preceding claim, characterized in that the distribution plate (11) furthermore comprises a rim (14) that enclose at least a part of the upper surface (12) of the distribution plate (11), at least a part of the peripheral edge (13) being constituted by the upper edge of the rim (14) .
5. The waste water installation according to any preceding claim, characterized in that the peripheral edge (13) of the distribution plate (11) is saw tooth shaped.
6. The waste water installation according to any preceding claim, characterized in that it furthermore comprises an aerator (18) arranged at the bottom (3) of the vessel (2), the aerator (18) being arranged to add oxygen to the waste water that the vessel (2) is intended to house.
7. The waste water installation according to claim 6,
characterized in that the aerator (18) is arranged in the vertical direction at a level under the outlet opening (8) .
8. The waste water installation according to any preceding claim, characterized in that it furthermore comprises a lid (17), which is tight against the vessel (2) in the area of an upper edge (6) of the vessel (2).
9. A method for reducing high content of harmful fluids in waste water, the method comprising the steps of:
- receiving into a vessel (2) a mixture of a flow of incoming waste water and a flow of harmful fluids via an inlet opening (7) ,
- directing the incoming waste water flow towards an upper surface (12) of a distribution plate (11) arranged in the vessel (2), which distribution plate (11) comprises at least one distribution bracket (15) that is connected to and project at an angle to the upper surface (12) of the distribution plate (11),
- distributing the waste water flow over the upper surface (12) of the distribution plate (11),
- flowing the distributed waste water flow over a peripheral edge (13) of the distribution plate (11) whereupon the harmful fluids reacts with the oxygen and is dissolved in the waste water, and
- flowing the waste water out of the vessel (2) via an outlet opening (18).
10. The method according to claim 9, furthermore comprising the step of adding air bubbles to the waste water that is housed in the vessel (2) by means of an aerator (18) arranged at the bottom (3) of the vessel (2) .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1151200-1 | 2011-12-15 | ||
| SE1151200A SE536403C2 (en) | 2011-12-15 | 2011-12-15 | Wastewater treatment plant and method for reducing high levels of harmful fluids in wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013090518A1 true WO2013090518A1 (en) | 2013-06-20 |
Family
ID=47470220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2012/069407 WO2013090518A1 (en) | 2011-12-15 | 2012-12-13 | Waste water installation and method for reducing high content of harmful fluids in waste water |
Country Status (2)
| Country | Link |
|---|---|
| SE (1) | SE536403C2 (en) |
| WO (1) | WO2013090518A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUD20130026A1 (en) * | 2013-02-26 | 2014-08-27 | Leandro Taboga | INTEGRATED BIOLOGICAL PURIFICATION SYSTEM FOR LIQUIDS BASED ON THE COMBINATION OF BACTERIAL AND VEGETABLE BIOMASS INCLUDING THE STAGE OF THICKENING AND SLUDGE STABILIZATION. |
| EP3181905A1 (en) * | 2015-12-16 | 2017-06-21 | Xylem IP Management S.à.r.l. | A pump station arrangement and method for removing harmful fluids from wastewater |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920424A (en) * | 1971-02-16 | 1975-11-18 | Texas Gulf Inc | Liquid sulphur gas scrubber apparatus |
| EP0738687A1 (en) * | 1995-04-20 | 1996-10-23 | Anton Schlatte | Waste water treatment plant |
| JP2000167573A (en) * | 1998-12-04 | 2000-06-20 | Toray Ind Inc | Method and apparatus for treating waste water containing dye |
| US20050269252A1 (en) * | 2004-06-04 | 2005-12-08 | Fuji Clean Co., Ltd. | Water treatment apparatus |
| EP1728554A1 (en) * | 2005-06-02 | 2006-12-06 | Research Institute of Petroleum Industry | A process for removing sulfur particles from an aqueous catalyst solution and for removing hydrogen sulfide and recovering sulfur from a gas stream |
| US20080093294A1 (en) * | 2006-10-20 | 2008-04-24 | Brentwood Industries, Inc. | Biological treatment system and assembly |
| US20090145849A1 (en) * | 2005-07-12 | 2009-06-11 | Diversified Industries Ltd. | Solution and method for scavenging sulphur compounds |
-
2011
- 2011-12-15 SE SE1151200A patent/SE536403C2/en unknown
-
2012
- 2012-12-13 WO PCT/US2012/069407 patent/WO2013090518A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920424A (en) * | 1971-02-16 | 1975-11-18 | Texas Gulf Inc | Liquid sulphur gas scrubber apparatus |
| EP0738687A1 (en) * | 1995-04-20 | 1996-10-23 | Anton Schlatte | Waste water treatment plant |
| JP2000167573A (en) * | 1998-12-04 | 2000-06-20 | Toray Ind Inc | Method and apparatus for treating waste water containing dye |
| US20050269252A1 (en) * | 2004-06-04 | 2005-12-08 | Fuji Clean Co., Ltd. | Water treatment apparatus |
| EP1728554A1 (en) * | 2005-06-02 | 2006-12-06 | Research Institute of Petroleum Industry | A process for removing sulfur particles from an aqueous catalyst solution and for removing hydrogen sulfide and recovering sulfur from a gas stream |
| US20090145849A1 (en) * | 2005-07-12 | 2009-06-11 | Diversified Industries Ltd. | Solution and method for scavenging sulphur compounds |
| US20080093294A1 (en) * | 2006-10-20 | 2008-04-24 | Brentwood Industries, Inc. | Biological treatment system and assembly |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUD20130026A1 (en) * | 2013-02-26 | 2014-08-27 | Leandro Taboga | INTEGRATED BIOLOGICAL PURIFICATION SYSTEM FOR LIQUIDS BASED ON THE COMBINATION OF BACTERIAL AND VEGETABLE BIOMASS INCLUDING THE STAGE OF THICKENING AND SLUDGE STABILIZATION. |
| EP3181905A1 (en) * | 2015-12-16 | 2017-06-21 | Xylem IP Management S.à.r.l. | A pump station arrangement and method for removing harmful fluids from wastewater |
| WO2017102627A1 (en) * | 2015-12-16 | 2017-06-22 | Xylem Ip Management S.À R.L. | A pump station arrangement and method for removing harmful fluids from wastewater |
| CN108368838A (en) * | 2015-12-16 | 2018-08-03 | 赛莱默知识产权管理有限公司 | Pump station device and method for removing harmful fluids from waste water |
| CN108368838B (en) * | 2015-12-16 | 2020-07-24 | 赛莱默知识产权管理有限公司 | Pump station device and method for removing harmful fluids from waste water |
| US11235995B2 (en) | 2015-12-16 | 2022-02-01 | Xylem Europe Gmbh | Pump station arrangement and method for removing harmful fluids from wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| SE1151200A1 (en) | 2013-06-16 |
| SE536403C2 (en) | 2013-10-08 |
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