CA3116060A1 - Apparatus for and method of wastewater treatment - Google Patents
Apparatus for and method of wastewater treatment Download PDFInfo
- Publication number
- CA3116060A1 CA3116060A1 CA3116060A CA3116060A CA3116060A1 CA 3116060 A1 CA3116060 A1 CA 3116060A1 CA 3116060 A CA3116060 A CA 3116060A CA 3116060 A CA3116060 A CA 3116060A CA 3116060 A1 CA3116060 A1 CA 3116060A1
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- treatment chamber
- chamber
- aerobic treatment
- wastewater
- clarifying
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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
- C02F3/30—Aerobic and anaerobic processes
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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
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/085—Fluidized beds
-
- 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
- C02F3/10—Packings; Fillings; Grids
- C02F3/109—Characterized by the shape
-
- 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
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
A wastewater treatment apparatus includes: a first container defining an anaerobic treatment chamber operable to treat wastewater anaerobically, a second container defining an aerobic treatment chamber operable to treat the wastewater aerobically, and a third container defining a clarifying chamber. The anaerobic treatment chamber is in fluid communication with the aerobic treatment chamber. The aerobic treatment chamber and the second container are disposed within the clarifying chamber. The aerobic treatment chamber has a bottom, the bottom of the aerobic treatment chamber being in fluid communication with the clarifying chamber. Methods are also disclosed.
Description
APPARATUS FOR AND METHOD OF WASTEWATER TREATMENT
FIELD
This disclosure relates generally to wastewater treatment.
RELATED ART
Wastewater may require treatment under aerobic conditions. It may be desirable for aerobic treatment of wastewater to occur in a moving bed biofilm reactor.
SUMMARY
In one embodiment there is provided a wastewater treatment apparatus. The apparatus includes a first container defining an anaerobic treatment chamber operable to treat wastewater anaerobically, a second container defining an aerobic treatment chamber operable to treat the wastewater aerobically, and a third container defining a clarifying chamber.
The anaerobic treatment chamber is in fluid communication with the aerobic treatment chamber. The aerobic treatment chamber and the second container are disposed within the clarifying chamber. The aerobic treatment chamber has a bottom. The bottom of the aerobic treatment chamber is in fluid communication with the clarifying chamber.
The apparatus may further include a screen at an interface between the bottom of the aerobic treatment chamber and the clarifying chamber.
The apparatus may further include an air supply system attached to the screen and operable to provide air to the aerobic treatment chamber.
The air supply may be positioned below the screen.
The aerobic treatment chamber may have media carriers therein.
The screen may have openings sized to prevent the media carriers from entering the clarifying chamber.
The media carriers may be operable to grow microorganisms.
Each of the media carriers may provide a surface for a biofilm to grow.
The second container may include a media reactor.
The second container may include a moving bed biofilm reactor.
In another embodiment there is provided a method of treating wastewater. The method involves treating the wastewater anaerobically in an anaerobic treatment chamber and treating Date Recue/Date Received 2021-04-23 the wastewater aerobically in an aerobic treatment chamber defined by a container disposed within a clarifying chamber. The anaerobic treatment chamber is in fluid communication with the aerobic treatment chamber. The aerobic treatment chamber has a bottom. The bottom of the aerobic treatment chamber is in fluid communication with the clarifying chamber.
Treating the wastewater anaerobically may occur before treating the wastewater aerobically.
The method may further involve providing air to the aerobic treatment chamber.
The air may be provided from below the bottom of the aerobic treatment chamber.
The aerobic treatment chamber may have media carriers therein.
The media carriers may be operable to grow microorganisms.
The method may further involve allowing a biofilm to grow on a surface of each of the media carriers.
The method may further involve using a screen at an interface between the bottom of the aerobic treatment chamber and the clarifying chamber to prevent the media carriers from entering the clarifying chamber.
The container defining the aerobic treatment chamber may include a media reactor.
The container defining the aerobic treatment chamber may include a moving bed biofilm reactor.
Other aspects and features will become apparent to those ordinarily skilled in the art upon review of the following description of illustrative embodiments in conjunction with the accompanying figures.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a wastewater treatment apparatus according to one embodiment, with a tank lid of the apparatus removed.
FIG. 2 is a perspective view of the wastewater treatment apparatus of FIG. 1 with a portion of the tank wall cut away to show the interior of the treatment apparatus and with the tank lid of the apparatus removed.
FIG. 3 is a top view of the wastewater treatment apparatus of FIG. 1, with the tank lid of the apparatus removed.
FIELD
This disclosure relates generally to wastewater treatment.
RELATED ART
Wastewater may require treatment under aerobic conditions. It may be desirable for aerobic treatment of wastewater to occur in a moving bed biofilm reactor.
SUMMARY
In one embodiment there is provided a wastewater treatment apparatus. The apparatus includes a first container defining an anaerobic treatment chamber operable to treat wastewater anaerobically, a second container defining an aerobic treatment chamber operable to treat the wastewater aerobically, and a third container defining a clarifying chamber.
The anaerobic treatment chamber is in fluid communication with the aerobic treatment chamber. The aerobic treatment chamber and the second container are disposed within the clarifying chamber. The aerobic treatment chamber has a bottom. The bottom of the aerobic treatment chamber is in fluid communication with the clarifying chamber.
The apparatus may further include a screen at an interface between the bottom of the aerobic treatment chamber and the clarifying chamber.
The apparatus may further include an air supply system attached to the screen and operable to provide air to the aerobic treatment chamber.
The air supply may be positioned below the screen.
The aerobic treatment chamber may have media carriers therein.
The screen may have openings sized to prevent the media carriers from entering the clarifying chamber.
The media carriers may be operable to grow microorganisms.
Each of the media carriers may provide a surface for a biofilm to grow.
The second container may include a media reactor.
The second container may include a moving bed biofilm reactor.
In another embodiment there is provided a method of treating wastewater. The method involves treating the wastewater anaerobically in an anaerobic treatment chamber and treating Date Recue/Date Received 2021-04-23 the wastewater aerobically in an aerobic treatment chamber defined by a container disposed within a clarifying chamber. The anaerobic treatment chamber is in fluid communication with the aerobic treatment chamber. The aerobic treatment chamber has a bottom. The bottom of the aerobic treatment chamber is in fluid communication with the clarifying chamber.
Treating the wastewater anaerobically may occur before treating the wastewater aerobically.
The method may further involve providing air to the aerobic treatment chamber.
The air may be provided from below the bottom of the aerobic treatment chamber.
The aerobic treatment chamber may have media carriers therein.
The media carriers may be operable to grow microorganisms.
The method may further involve allowing a biofilm to grow on a surface of each of the media carriers.
The method may further involve using a screen at an interface between the bottom of the aerobic treatment chamber and the clarifying chamber to prevent the media carriers from entering the clarifying chamber.
The container defining the aerobic treatment chamber may include a media reactor.
The container defining the aerobic treatment chamber may include a moving bed biofilm reactor.
Other aspects and features will become apparent to those ordinarily skilled in the art upon review of the following description of illustrative embodiments in conjunction with the accompanying figures.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a wastewater treatment apparatus according to one embodiment, with a tank lid of the apparatus removed.
FIG. 2 is a perspective view of the wastewater treatment apparatus of FIG. 1 with a portion of the tank wall cut away to show the interior of the treatment apparatus and with the tank lid of the apparatus removed.
FIG. 3 is a top view of the wastewater treatment apparatus of FIG. 1, with the tank lid of the apparatus removed.
- 2 -Date Recue/Date Received 2021-04-23 FIG. 4 is a cross-sectional side view of the wastewater treatment apparatus of FIG. 3, taken along the section line marked FIG. 4 in FIG. 3.
FIG. 5 is a fragmentary bottom perspective view of a bottom of a reactor structure of the wastewater treatment apparatus of FIG. 1.
FIG. 6 is a perspective view of a media carrier according to one embodiment.
FIG. 7 is a front view of the media carrier of FIG. 6.
FIG. 8 is a flow chart of a method of treating wastewater according to one embodiment.
DETAILED DESCRIPTION
Referring to FIGS. 1 to 4, a wastewater treatment apparatus according to one embodiment is shown generally at 100 and includes a cylindrical wastewater treatment tank 102. The wastewater treatment tank 102 includes a tank wall 104, a tank lid 105, and a tank floor 106 defining a treatment chamber shown generally at 108; a tank inlet 110; and a tank outlet 112. Each of the tank inlet 110 and the tank outlet 112 is in fluid communication with the treatment chamber 108.
The wastewater treatment tank 102 further includes a chamber divider 114 which extends from the tank floor 106 to the tank lid 105 and from a first side 115 of the tank wall 104 to a second side 117 of the tank wall 104. The chamber divider 114 divides the treatment chamber 108 into an anaerobic treatment chamber shown generally at 116 and a clarifying chamber shown generally at 118. That is, on a first side 120 of the chamber divider 114, the tank wall 104, the tank floor 106, and the chamber divider 114 together form a container defining the anaerobic treatment chamber 116, and on a second side 122 of the chamber divider 114, the tank wall 104, the tank floor 106, and the chamber divider 114 together form a container defining the clarifying chamber 118.
Referring now to FIGS. 2 to 5, the wastewater treatment tank 102 also includes a reactor wall 124 and a reactor screen 126 which together form a reactor container 127 defining an aerobic treatment chamber shown generally at 128. The reactor wall 124 has a cylindrical shape in the embodiment shown; however, other shapes may be used.
Additionally, it is to be understood that the term "screen" as used herein includes the terms "mesh" and "sieve". The reactor screen 126 is located at a bottom, shown generally at 130, of the aerobic treatment
FIG. 5 is a fragmentary bottom perspective view of a bottom of a reactor structure of the wastewater treatment apparatus of FIG. 1.
FIG. 6 is a perspective view of a media carrier according to one embodiment.
FIG. 7 is a front view of the media carrier of FIG. 6.
FIG. 8 is a flow chart of a method of treating wastewater according to one embodiment.
DETAILED DESCRIPTION
Referring to FIGS. 1 to 4, a wastewater treatment apparatus according to one embodiment is shown generally at 100 and includes a cylindrical wastewater treatment tank 102. The wastewater treatment tank 102 includes a tank wall 104, a tank lid 105, and a tank floor 106 defining a treatment chamber shown generally at 108; a tank inlet 110; and a tank outlet 112. Each of the tank inlet 110 and the tank outlet 112 is in fluid communication with the treatment chamber 108.
The wastewater treatment tank 102 further includes a chamber divider 114 which extends from the tank floor 106 to the tank lid 105 and from a first side 115 of the tank wall 104 to a second side 117 of the tank wall 104. The chamber divider 114 divides the treatment chamber 108 into an anaerobic treatment chamber shown generally at 116 and a clarifying chamber shown generally at 118. That is, on a first side 120 of the chamber divider 114, the tank wall 104, the tank floor 106, and the chamber divider 114 together form a container defining the anaerobic treatment chamber 116, and on a second side 122 of the chamber divider 114, the tank wall 104, the tank floor 106, and the chamber divider 114 together form a container defining the clarifying chamber 118.
Referring now to FIGS. 2 to 5, the wastewater treatment tank 102 also includes a reactor wall 124 and a reactor screen 126 which together form a reactor container 127 defining an aerobic treatment chamber shown generally at 128. The reactor wall 124 has a cylindrical shape in the embodiment shown; however, other shapes may be used.
Additionally, it is to be understood that the term "screen" as used herein includes the terms "mesh" and "sieve". The reactor screen 126 is located at a bottom, shown generally at 130, of the aerobic treatment
- 3 -Date Recue/Date Received 2021-04-23 chamber 128 and thus forms a floor of the aerobic treatment chamber 128. The reactor wall 124, the reactor screen 126, and, consequently, the aerobic treatment chamber 128 are all disposed within the clarifying chamber 118. The reactor screen 126 is supported a distance 132 above the tank floor 106 by support legs 134, 136, and 138, and 140. The reactor screen 126 includes one or more screen openings, such as screen opening 142, and thus allows fluid to pass between the bottom 130 of the aerobic treatment chamber 128 and the clarifying chamber 118. That is, the bottom 130 of the aerobic treatment chamber 128 is in fluid communication with the clarifying chamber 118 through the reactor screen 126.
Each of the tank wall 104, the tank floor 106, the chamber divider 114, the reactor wall 124, and the reactor screen 126 may be made of any suitable material, such as, for example, fiberglass, metal, or concrete.
Referring again to FIGS. 1 to 4, the wastewater treatment tank 102 further includes an inter-tank conduit 144 extending through the chamber divider 114 between the anaerobic treatment chamber 116 and the aerobic treatment chamber 128. The inter-tank conduit 144 allows fluid to pass between the anaerobic treatment chamber 116 and the aerobic treatment chamber 128. That is, the anaerobic treatment chamber 116 is in fluid communication with the aerobic treatment chamber 128 through the inter-tank conduit 144. The inter-tank conduit 144 includes a first portion 146 inside the anaerobic treatment chamber 116 and a second portion 148 inside the aerobic treatment chamber 128. The second portion 148 includes an end cap 149 which seals its end, thus preventing fluid from passing through said end.
However, the second portion 148 also includes one or more conduit openings, such as conduit opening 150, through which fluid can pass from the inter-tank conduit 144 to the aerobic treatment chamber 128.
Referring now to FIG. 5, the wastewater treatment tank 102 also includes an air supply apparatus 152 positioned below the reactor screen 126 and thus below the bottom 130 of the aerobic treatment chamber 128. The air supply apparatus 152 is operable to provide air to the aerobic treatment chamber 128, as will be described further below. The air supply apparatus 152 includes one or more branch arms, such as branch arm 154. Each of the one or more branch arms includes one or more air outlets, such as air outlet 156 of branch arm 154, located on an underside of the respective branch arm (i.e., on a side of the branch arm that faces down
Each of the tank wall 104, the tank floor 106, the chamber divider 114, the reactor wall 124, and the reactor screen 126 may be made of any suitable material, such as, for example, fiberglass, metal, or concrete.
Referring again to FIGS. 1 to 4, the wastewater treatment tank 102 further includes an inter-tank conduit 144 extending through the chamber divider 114 between the anaerobic treatment chamber 116 and the aerobic treatment chamber 128. The inter-tank conduit 144 allows fluid to pass between the anaerobic treatment chamber 116 and the aerobic treatment chamber 128. That is, the anaerobic treatment chamber 116 is in fluid communication with the aerobic treatment chamber 128 through the inter-tank conduit 144. The inter-tank conduit 144 includes a first portion 146 inside the anaerobic treatment chamber 116 and a second portion 148 inside the aerobic treatment chamber 128. The second portion 148 includes an end cap 149 which seals its end, thus preventing fluid from passing through said end.
However, the second portion 148 also includes one or more conduit openings, such as conduit opening 150, through which fluid can pass from the inter-tank conduit 144 to the aerobic treatment chamber 128.
Referring now to FIG. 5, the wastewater treatment tank 102 also includes an air supply apparatus 152 positioned below the reactor screen 126 and thus below the bottom 130 of the aerobic treatment chamber 128. The air supply apparatus 152 is operable to provide air to the aerobic treatment chamber 128, as will be described further below. The air supply apparatus 152 includes one or more branch arms, such as branch arm 154. Each of the one or more branch arms includes one or more air outlets, such as air outlet 156 of branch arm 154, located on an underside of the respective branch arm (i.e., on a side of the branch arm that faces down
- 4 -Date Recue/Date Received 2021-04-23 towards the tank floor 106). The air supply apparatus 152 further includes an air inlet 158 to which an external source of air, such as, for example, a compressor, can be connected using, for example, an air conduit.
Referring now to FIG. 4, the aerobic treatment chamber 128 may have within it one or more media carriers, such as media carrier 160. As will be described further below, each of the one or more media carriers provides a surface for a biofilm of microorganisms to grow. The one or more media carriers may be made of any suitable material, such as, for example, high density polyethylene or other polymers. The one or more media carriers may have any suitable shape. For example, the media carrier 160 may have a cross-disk shape as shown in FIGS. 6 .. and 7. Furthermore, each of the one or more media carriers is sized such that it cannot pass through any of the one or more screen openings of the reactor screen 126 or any of the one or more conduit openings of the inter-tank conduit 144. Thus, the reactor screen 126 prevents the one or more media carriers from entering the clarifying chamber 118 and the inter-tank conduit 144 prevents the one or more media carriers from entering the anaerobic treatment chamber 116; that is, the reactor screen 126 and the inter-tank conduit 144 prevent the one or more media carriers from leaving the aerobic treatment chamber 128.
The embodiment of FIGS. 1 to 5 is an example only, and alternative embodiments may vary. For example, alternative embodiments may include a separate treatment tank, with its own tank wall and tank floor, for each of the anaerobic treatment chamber 116 and the clarifying chamber 118. Furthermore, in alternative embodiments, the wastewater treatment tank 102 may have a non-cylindrical shape. For example, the wastewater treatment tank 102 may have a cubic shape, or may include a spherical or oval shell instead of the tank wall 104 and the tank floor 106. Alternative embodiments may also include additional chambers.
Referring now to FIGS. 1, 2, and 8, in operation, untreated wastewater enters the wastewater treatment tank 102 through the tank inlet 110, as shown at block 200. The untreated wastewater may include both liquid and solid waste. The wastewater first enters anaerobic treatment chamber 116, where, at block 202, it is subjected to anaerobic treatment.
Most of the solid waste is removed from the wastewater during this step, settling on the tank floor 106 in the anaerobic treatment chamber 116.
Referring now to FIG. 4, the aerobic treatment chamber 128 may have within it one or more media carriers, such as media carrier 160. As will be described further below, each of the one or more media carriers provides a surface for a biofilm of microorganisms to grow. The one or more media carriers may be made of any suitable material, such as, for example, high density polyethylene or other polymers. The one or more media carriers may have any suitable shape. For example, the media carrier 160 may have a cross-disk shape as shown in FIGS. 6 .. and 7. Furthermore, each of the one or more media carriers is sized such that it cannot pass through any of the one or more screen openings of the reactor screen 126 or any of the one or more conduit openings of the inter-tank conduit 144. Thus, the reactor screen 126 prevents the one or more media carriers from entering the clarifying chamber 118 and the inter-tank conduit 144 prevents the one or more media carriers from entering the anaerobic treatment chamber 116; that is, the reactor screen 126 and the inter-tank conduit 144 prevent the one or more media carriers from leaving the aerobic treatment chamber 128.
The embodiment of FIGS. 1 to 5 is an example only, and alternative embodiments may vary. For example, alternative embodiments may include a separate treatment tank, with its own tank wall and tank floor, for each of the anaerobic treatment chamber 116 and the clarifying chamber 118. Furthermore, in alternative embodiments, the wastewater treatment tank 102 may have a non-cylindrical shape. For example, the wastewater treatment tank 102 may have a cubic shape, or may include a spherical or oval shell instead of the tank wall 104 and the tank floor 106. Alternative embodiments may also include additional chambers.
Referring now to FIGS. 1, 2, and 8, in operation, untreated wastewater enters the wastewater treatment tank 102 through the tank inlet 110, as shown at block 200. The untreated wastewater may include both liquid and solid waste. The wastewater first enters anaerobic treatment chamber 116, where, at block 202, it is subjected to anaerobic treatment.
Most of the solid waste is removed from the wastewater during this step, settling on the tank floor 106 in the anaerobic treatment chamber 116.
- 5 -Date Recue/Date Received 2021-04-23 Next, at block 204, the wastewater moves through the inter-tank conduit 144 into the aerobic treatment chamber 128. In the aerobic treatment chamber 128, the wastewater is subjected to aerobic treatment, as shown at block 206. An external source of air (not shown) provides air to the air supply 152 through the air inlet 158. The air leaves the air supply .. through the air outlets of the branch arms. Because the air supply apparatus 152 is positioned directly below the reactor screen 126 and the bottom 130 of the aerobic treatment chamber 128, when the air leaves the air outlets, it moves upward through the screen openings of the screen 126 into the aerobic treatment chamber 128. Minimal¨if any¨air enters the clarifying chamber 118.
Once in the aerobic treatment chamber 128, the air causes the one or more media carriers within to circulate and also aerates the wastewater within. Aeration oxidizes the wastewater and stimulates and promotes the growth of aerobic microorganisms, such as, for example, aerobic bacteria. The media carriers provide a surface for the aerobic microorganisms to grow and form biofilms. The aerobic microorganisms enhance the aerobic treatment of the wastewater. The reactor wall 124, reactor screen 126, and media carriers can thus be considered to form a media reactor or a moving bed biofilm reactor.
After aerobic treatment, at block 208, the wastewater moves through the reactor screen 126 into the clarifying chamber 118. In the clarifying chamber 118, solid particles remaining in the wastewater are allowed to settle out, as shown at block 210. At block 212, the treated wastewater leaves the wastewater treatment tank 102 through the tank outlet 112.
Although specific embodiments have been described and illustrated, such embodiments should be considered illustrative only and not as limiting the invention as construed according to the accompanying claims.
Once in the aerobic treatment chamber 128, the air causes the one or more media carriers within to circulate and also aerates the wastewater within. Aeration oxidizes the wastewater and stimulates and promotes the growth of aerobic microorganisms, such as, for example, aerobic bacteria. The media carriers provide a surface for the aerobic microorganisms to grow and form biofilms. The aerobic microorganisms enhance the aerobic treatment of the wastewater. The reactor wall 124, reactor screen 126, and media carriers can thus be considered to form a media reactor or a moving bed biofilm reactor.
After aerobic treatment, at block 208, the wastewater moves through the reactor screen 126 into the clarifying chamber 118. In the clarifying chamber 118, solid particles remaining in the wastewater are allowed to settle out, as shown at block 210. At block 212, the treated wastewater leaves the wastewater treatment tank 102 through the tank outlet 112.
Although specific embodiments have been described and illustrated, such embodiments should be considered illustrative only and not as limiting the invention as construed according to the accompanying claims.
- 6 -Date Recue/Date Received 2021-04-23
Claims (20)
1. A wastewater treatment apparatus comprising:
a first container defining an anaerobic treatment chamber operable to treat wastewater anaerobically;
a second container defining an aerobic treatment chamber operable to treat the wastewater aerobically; and a third container defining a clarifying chamber, wherein the anaerobic treatment chamber is in fluid communication with the aerobic treatment chamber;
wherein the aerobic treatment chamber and the second container are disposed within the clarifying chamber; and wherein the aerobic treatment chamber has a bottom, the bottom of the aerobic treatment chamber being in fluid communication with the clarifying chamber.
a first container defining an anaerobic treatment chamber operable to treat wastewater anaerobically;
a second container defining an aerobic treatment chamber operable to treat the wastewater aerobically; and a third container defining a clarifying chamber, wherein the anaerobic treatment chamber is in fluid communication with the aerobic treatment chamber;
wherein the aerobic treatment chamber and the second container are disposed within the clarifying chamber; and wherein the aerobic treatment chamber has a bottom, the bottom of the aerobic treatment chamber being in fluid communication with the clarifying chamber.
2. The apparatus of claim 1 further comprising a screen at an interface between the bottom of the aerobic treatment chamber and the clarifying chamber.
3. The apparatus of claim 2 further comprising an air supply system attached to the screen and operable to provide air to the aerobic treatment chamber.
4. The apparatus of claim 3 wherein the air supply is positioned below the screen.
5. The apparatus of claim 2, 3, or 4 wherein the aerobic treatment chamber has media carriers therein.
6. The apparatus of claim 5 wherein the screen has openings sized to prevent the media carriers from entering the clarifying chamber.
Date Recue/Date Received 2021-04-23
Date Recue/Date Received 2021-04-23
7. The apparatus of claim 5 or 6 wherein the media carriers are operable to grow microorganisms.
8. The apparatus of claim 5, 6, or 7 wherein each of the media carriers provides a surface for a biofilm to grow.
9. The apparatus of any one of claims 1 to 8 wherein the second container includes a media reactor.
10. The apparatus of any one of claims 2 to 8 wherein the second container includes a moving bed biofilm reactor.
11. A method of treating wastewater, the method comprising:
treating the wastewater anaerobically in an anaerobic treatment chamber; and treating the wastewater aerobically in an aerobic treatment chamber defined by a container disposed within a clarifying chamber, wherein the anaerobic treatment chamber is in fluid communication with the aerobic treatment chamber; and wherein the aerobic treatment chamber has a bottom, the bottom of the aerobic treatment chamber being in fluid communication with the clarifying chamber.
treating the wastewater anaerobically in an anaerobic treatment chamber; and treating the wastewater aerobically in an aerobic treatment chamber defined by a container disposed within a clarifying chamber, wherein the anaerobic treatment chamber is in fluid communication with the aerobic treatment chamber; and wherein the aerobic treatment chamber has a bottom, the bottom of the aerobic treatment chamber being in fluid communication with the clarifying chamber.
12. The method of claim 11 wherein treating the wastewater anaerobically occurs before treating the wastewater aerobically.
13. The method of claim 11 or 12 further comprising providing air to the aerobic treatment chamber.
14. The method of claim 13 wherein the air is provided from below the bottom of the aerobic treatment chamber.
Date Recue/Date Received 2021-04-23
Date Recue/Date Received 2021-04-23
15. The method of any one of claims 11 to 14 wherein the aerobic treatment chamber has media carriers therein.
16. The method of claim 15 wherein the media carriers are operable to grow microorganisms.
17. The method of claim 15 or 16 further comprising allowing a biofilm to grow on a surface of each of the media carriers.
18. The method of claim 15, 16, or 17 further comprising using a screen at an interface between the bottom of the aerobic treatment chamber and the clarifying chamber to prevent the media carriers from entering the clarifying chamber.
19. The method of any one of claims 11 to 18 wherein the container defining the aerobic treatment chamber includes a media reactor.
20. The method of claim 18 wherein the container defining the aerobic treatment chamber includes a moving bed biofilm reactor.
Date Recue/Date Received 2021-04-23
Date Recue/Date Received 2021-04-23
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202163158524P | 2021-03-09 | 2021-03-09 | |
| US63/158,524 | 2021-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3116060A1 true CA3116060A1 (en) | 2022-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3116060A Pending CA3116060A1 (en) | 2021-03-09 | 2021-04-23 | Apparatus for and method of wastewater treatment |
Country Status (2)
| Country | Link |
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| CA (1) | CA3116060A1 (en) |
| WO (1) | WO2022187939A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050218074A1 (en) * | 2004-04-06 | 2005-10-06 | Pollock David C | Method and apparatus providing improved throughput and operating life of submerged membranes |
| US10919792B2 (en) * | 2012-06-11 | 2021-02-16 | Evoqua Water Technologies Llc | Treatment using fixed film processes and ballasted settling |
| US9896363B2 (en) * | 2015-04-06 | 2018-02-20 | Headworks Bio Inc. | Moving bed biofilm reactor for waste water treatment system |
-
2021
- 2021-04-23 CA CA3116060A patent/CA3116060A1/en active Pending
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2022
- 2022-03-07 WO PCT/CA2022/050321 patent/WO2022187939A1/en active Application Filing
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| WO2022187939A1 (en) | 2022-09-15 |
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