AU2021103721A4 - An Integrated Anaerobic, Anoxic, And Aerobic Treatment Device For Sewage Treatment - Google Patents
An Integrated Anaerobic, Anoxic, And Aerobic Treatment Device For Sewage Treatment Download PDFInfo
- Publication number
- AU2021103721A4 AU2021103721A4 AU2021103721A AU2021103721A AU2021103721A4 AU 2021103721 A4 AU2021103721 A4 AU 2021103721A4 AU 2021103721 A AU2021103721 A AU 2021103721A AU 2021103721 A AU2021103721 A AU 2021103721A AU 2021103721 A4 AU2021103721 A4 AU 2021103721A4
- Authority
- AU
- Australia
- Prior art keywords
- chamber
- aerobic
- anoxic
- hood
- anaerobic
- 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.)
- Ceased
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 56
- 238000005192 partition Methods 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000005273 aeration Methods 0.000 claims abstract description 59
- 239000010802 sludge Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 238000004062 sedimentation Methods 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 17
- 238000010992 reflux Methods 0.000 abstract description 15
- 230000001546 nitrifying effect Effects 0.000 abstract description 12
- 239000007789 gas Substances 0.000 description 34
- 239000000243 solution Substances 0.000 description 20
- 239000011259 mixed solution Substances 0.000 description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 11
- 229910052698 phosphorus Inorganic materials 0.000 description 11
- 239000011574 phosphorus Substances 0.000 description 11
- 244000005700 microbiome Species 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- -1 organic matters Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
Landscapes
- 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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The present invention relates to an integrated anaerobic, anoxic, and aerobic treatment
device for sewage treatment. Wherein, a reaction pool adopts a cylindrical structure
which has an opening at the upper end, and there are an internal partition wall and an
outside partition wall are arranged in the reaction pool. In addition, the internal
partition wall is arranged in the outside partition wall, and the inner cavity of the
reaction pool is divided into an aerobic chamber, an anoxic chamber and an anaerobic
chamber from inside to outside by the internal partition wall and the outside partition
wall, and there is a water distribution pipe is equipped on the bottom of the anaerobic
chamber, as well as there is an aeration device is equipped on the bottom of the
aerobic chamber. Meanwhile, there is a diversion hood is connected to the upper end
of the internal partition wall tightly, and there is a gas collecting hood is equipped
above the diversion hood. Moreover, during the process of upwards flow of the mixed
liquid and the air in the aerobic chamber, a part of liquid flows downwards along the
diversion hood into the anoxic chamber, and thus it can realize the self-refluxing of
the nitrifying solution in the aerobic chamber, and the other part flows upwards with
the air into the gas-liquid separation device for being separated, after that, the air
would be discharged, and the sludge would flow into the lower part of the anaerobic
chamber along the sludge distribution pipe uniformly, and thus it can realize the self
refluxing of activated sludge, so as to realize the unpowered self-refluxing of the
sludge and the nitrifying solution during the A20 sewage treatment process, as well
as to save energy and reduce costs.
Drawings of Descriptions
10 25 8 11
9
24 3
Figure 1
i1/2
Description
Drawings of Descriptions
25 8 11
9
24 3
Figure 1
i1/2
Descriptions
An integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment
Technical Field
[0001] The present invention relates to the technical field of biological reaction equipment in sewage treatment, particularly to an integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment.
Background Technology
[0002] Nowadays, the activated sludge process applied for sewage treatment in urban is almost all based on the biological theory of growth and metabolism of "anaerobic, anoxic, aerobic", i.e., the pollutants including organic matters, nitrogen, and phosphorus, etc., can be removed by means of the growth and metabolism of microorganisms under different environments in biological ponds, so as to achieve the purpose of purifying bodies of water. Thus, the processes of anaerobic, anoxic and aerobic can be combined as needed according to different sewage treatment processes, such as the anaerobic-aerobic combination, the anoxic-aerobic combination, and the anaerobic-anoxic-aerobic combination, wherein, the anaerobic -anoxic-aerobic combination is generally called as A 2 0 sewage treatment process. Currently, the existing A20 sewage treatment process is usually composed of three pools with different characteristics of anaerobic, anoxic and aerobic, wherein, the pool body which is free from dissolved oxygen and nitrate nitrogen is known as the anaerobic pool, and the pool body which is free from dissolved oxygen but contains nitrate nitrogen is known as the anoxic pool, as well as the pool body which makes the oxygen content of water reach 2.Omg/L or more by means of aeration is known as the aerobic pool.
[0003] The sewage and the returned sludge would enter the anaerobic pool firstly and be mixed completely. After being subjected to a certain period of anaerobic decomposition, part of BOD would be removed, and thus it may make part of the nitrogen compounds be converted into N 2 (i.e., denitrification) and then to be released. Wherein, the phosphorus-accumulating microorganisms existed in the returned sludge would release phosphorus, which can satisfy the demand of bacteria for phosphorus, and then, the sewage flows into the anoxic pool, and the denitrifying bacteria existed in the pool would reduce the nitrate, which has flowed back into the aerobic pool by means of internal circulation to N 2 based upon taking undecomposed carbonaceous organic material existed in the sewage as carbon source, and then release it. After that, the sewage flows into the aerobic pool, and the NH 3 -N (ammonia-nitrogen) existed in the water would be subjected to nitrification to generate nitrate. Meanwhile, the organic matters existed in the water would supply the phosphorus-uptake microorganisms with energy after being subjected to oxygenolysis, wherein, the microorganisms absorb phosphorus from the water, and then, the phosphorus enters the cell tissue and is concentrated in the microorganisms, after that, it would be discharged from the system in the form ofphosphorus-enriched sludge after precipitation and separation.
[0004] It can be known that the anaerobic reaction requires the returned sludge after being subjected to aerobic reaction, while the anoxic reaction requires the returned nitrifying solution in the aerobic pool. Currently, most of the reflux of the sludge and the nitrifying solution occurred in the prior art can be realized by utilizing pumps, moreover, most of the aerobic pools, anaerobic pools and anoxic pools utilized in the existing sewage treatment plants adopt the structure of separated and independent pool body. The structure of separated and independent pool body and the utilization of pumps for refluxing have such disadvantages as occupying a large area and high energy consumption.
Summary of the Invention
[0005] In conclusion, for the purpose of overcoming the shortcomings of the existing technology, the present invention provides an integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment, which installs a conical diversion hood that can cover the upper end of the aerobic chamber, and there is a gas collecting hood is equipped above the diversion hood. Moreover, during the process of upwards flow of the mixed liquid and the air in the aerobic chamber, a part of liquid flows downwards along the diversion hood into the anoxic chamber, and thus it can realize the self-refluxing of the nitrifying solution in the aerobic chamber, and the other part flows upwards with the air into the gas-liquid separation device for being separated, after that, the air would be discharged, and the sludge would flow into the lower part of the anaerobic chamber along the sludge distribution pipe uniformly, and thus it can realize the self-refluxing of activated sludge, so as to realize the unpowered self-refluxing of the sludge and the nitrifying solution during the A20 sewage treatment process, as well as to save energy and reduce costs.
[0006] In order to solve the aforesaid technical problems, the technical scheme adopted by the present invention is as follows: An integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment, wherein, it consists of a reaction pool, internal partition walls, outside partition walls, sewage inlet pipes, water distribution pipes, and a sewage pump, a gas collecting hood, a gas stripping pipe, a diversion hood, a water collecting weir and a gas-liquid separation device, wherein, the said reaction pool adopts a cylindrical structure with an opening at the upper end, and there are two internal partition walls and two outside partition walls are arranged in it. Furthermore, the said internal partition walls are arranged in the outside partition walls, and the inner cavity of the reaction pool is divided into an aerobic chamber, an anoxic chamber and an anaerobic chamber from inside to outside by the internal partition wall and the outside partition wall, as well as there is an anoxic water inlet pipe is equipped on the upper part of the outside partition wall, and the said anoxic water inlet pipe is connected to the upper part of the anaerobic chamber and the bottom of the anoxic chamber. Meanwhile, there is an aerobic water inlet pipe is equipped on the said internal partition wall, and the said aerobic water inlet pipe is connected to the upper part of the anoxic chamber and the bottom of the aerobic chamber. Furthermore, there is a water distribution pipe is equipped at the bottom of the anaerobic chamber, and the said water distribution pipe is connected to the sewage pump arranged at the outside of the reaction pool through the sewage inlet pipe. Meanwhile, there is an aeration device is equipped at the bottom of the said anaerobic chamber, and there is an air distributor is equipped in the aerobic chamber above the aeration device, as well as the said air distributor is connected to the aerobic chamber. In addition, there is diversion hood is connected to the upper end of the internal partition wall tightly, and the height of the said internal partition wall is lower than that of the outside partition wall, meanwhile, the diversion hood and the outside partition wall located above the diversion hood form a sedimentation chamber, and the said diversion hood is a conical hood with openings at the upper and lower ends, wherein, the opening of the said diversion hood at the lower end is located in the anoxic chamber, and there is a first gap is formed between such opening and the inner wall of the anoxic chamber, furthermore, there is a gas collecting hood is equipped in the anaerobic chamber located above the said diversion hood, and the said gas collecting hood is a conical hood with openings at the upper and lower ends, which is installed on and covers the opening of the diversion hood at the upper end, and the inner diameter of the opening of the gas collecting hood at the lower end is greater than the outside diameter of the opening of the diversion hood at the upper end, in addition, there is a second gap is formed between the said gas collecting hood and the diversion hood, and the opening of the said gas collecting hood at the upper end is connected to the gas-liquid separation device through the gas stripping pipe, wherein, there is an exhaust vent and a mud outlet hole is equipped on the said gas-liquid separation device, and the said mud outlet hole is connected to the bottom of the anaerobic chamber through the sludge distribution pipe, and there is a water collecting weir is equipped on the inner wall at the upper end of the said outside partition wall, and the said water collecting weir is arranged in an annular form along the outside partition wall.
[0007] The technical scheme of the present invention also can be realized as follows:
the said aeration device consists of an air inlet pipe, an aeration blower and an connector for aeration, wherein, the said aeration blower is arranged outside of the reaction pool, and the air outlet of the said aeration blower is connected to the connector for aeration through the air inlet pipe, and the said aeration blower adopts cylindrical tubular structure, as well as the connector for aeration is arranged at the bottom of the aerobic chamber vertically, in addition, one end of the said air inlet pipe is connected to the air outlet of the aeration blower, and the other end of the air inlet pipe is connected to the inner cavity of the connector for aeration, and the air inlet pipe is tangent to the connector for aeration.
[0008] The technical scheme of the present invention also can be realized as follows:
the said air distributor adopts funnel-shaped structure with openings at upper and lower ends, and the outside wall of which is connected to the inner wall of the aerobic chamber through a connecting rod, in addition, the opening of the said air distributor at the lower end corresponds to the opening of the connector for aeration at the upper end, and there are air ventilation holes are arranged on the side wall of the said air distributor (23) densely.
[0009] The technical scheme of the present invention also can be realized as follows: the inner diameter of the opening of the said air distributor at the lower end is smaller than that of the connector for aeration.
[0010] The technical scheme of the present invention also can be realized as follows: the said water distribution pipe is arranged in an annular form along the bottom of the anaerobic chamber, and there are a lot of water outlet holes with openings upwards are arranged on the said water distribution pipe uniformly.
[0011] The technical scheme of the present invention also can be realized as follows: there is a water-resisting plate is arranged vertically downwards at the lower end of the said diversion hood, wherein, the upper end of the said water-resisting plate is fixedly connected to the lower end of the diversion hood, and the lower end of the said water resisting plate is located under the through hole where the internal partition wall and the aerobic water inlet pipe are connected.
[0012] The technical scheme of the present invention also can be realized as follows: the said sludge distribution pipe consists of a main pipe for mud distribution which is arranged in an annular form above the anaerobic chamber and along such anaerobic chamber, and the said main pipe of mud distribution is connected to the mud outlet hole of the gas-liquid separation device through a connecting pipe, meanwhile, there are a lot of branch pipes for mud distribution, which are arranged vertically downwards, are equipped at the lower end of the said main pipe for mud distribution, and these branch pipes for mud distribution are arranged uniformly in an annular form, wherein, the said branch pipes for mud distribution are connected to the main pipe for mud distribution and the bottom of the anaerobic chamber.
[0013] The beneficial effects of the present invention are: 1. The concept of the present invention is to install a conical diversion hood which can cover the upper end of the aerobic chamber, and there is a gas collecting hood is equipped above the diversion hood. Moreover, during the process of upwards flow of the mixed liquid and the air in the aerobic chamber, a part of liquid flows downwards along the diversion hood into the anoxic chamber, and thus it can realize the self refluxing of the nitrifying solution in the aerobic chamber, and the other part flows upwards with the air into the gas-liquid separation device for being separated, after that, the air would be discharged, and the sludge would flow into the lower part of the anaerobic chamber along the sludge distribution pipe uniformly, and thus it can realize the self-refluxing of activated sludge, so as to realize the unpowered self- refluxing of the sludge and the nitrifying solution during the A 2 0 sewage treatment process, as well as to save energy and reduce costs.
[0014] 2. The concept of the present invention is to arrange an internal partition wall and an outside partition wall in an annular form in a cylindrical reaction pool, wherein, the internal partition wall and the outside partition wall divide the inner cavity of the reaction pool into an anaerobic chamber, an anoxic chamber and an aerobic chamber, and the height of the internal partition wall is lower than that of the outside partition wall, in addition, there is a conical diversion hood is equipped at the upper end of the internal partition wall, which would form a sedimentation chamber between the outside partition wall and the diversion hood, and thus complete the integrated structure of anaerobic pool, anoxic pool, aerobic pool and sedimentation pool, which can effectively save space.
[0015] 3. The air inlet pipe of the aeration device of the present invention is tangent to the connector for aeration, and the pressure gas enters the connector for aeration along the tangential direction on the lower part of the connector for aeration which adopts the cylindrical tubular structure, and then spirally flows upwards along the inner wall of the connector for aeration, at this time, the pressure gas flowing upwards spirally would collide with an air distributor which adopts funnel-shaped structure and be diffused during the process of flowing upwards, and thus, the bubbles are broken and dispersed. After that, the pressure gas would flow upwards along the air ventilation holes on the air distributor and the outside wall of the air distributor, so that makes the pressure gas be distributed uniformly. Wherein, the deployment of the air distributor can increase the distribution area of the pressure gas in the aerobic chamber, which is conducive to making the solution and the gas mix more uniformly, and thus, it can provide sufficient oxygen for the aerobes in the aerobic chamber, so that accelerate the aerobic reaction and improve the efficiency of sewage treatment.
[0016] 4. The mixed solution in the aerobic chamber of the present invention would flow upwards together with air. Thus, when it flows to the diversion hood, the flow velocity of mixed solution speeds up while the pressure increases due to the diversion hood adopts conical structure, and the area of the inner cavity of which gradually decreases from bottom to top. Furthermore, when the mixed solution flows out from the opening of the diversion hood at the upper end, the air would continue to flow upwards into the air stripping pipe with part of the mixed solution, and the other part of the mixed solution would flow downwards along the second gap between the diversion hood and the gas collecting hood, as well as the diversion hood, after that, it would flow into the anoxic chamber along the first gap, and then flows into the lower part of the anoxic chamber under the action of the water-resisting plate, and thus mixes with the solution in the anoxic chamber to participate in the anoxic reaction, so as to realize the self-refluxing of nitrifying solution in the aerobic chamber without installing additional pumps, and thus, it can save energy.
[0017] 5. The present invention would produce following effects, i.e., with the liquid level of the mixed solution in the aerobic chamber rising, the solution remained on the top of the diversion hood accumulated. At this time, the air has carried part of the mixed solution and flowed into the gas-liquid separation device for separation along the air stripping pipe, and thus, the mixed solution remined above the diversion hood was precipitated and clarified gradually, after that, the clear water would flow out from the water collecting weir, and the sludge in the mixed solution would flow downwards into the anoxic chamber along the diversion hood, and then enter the aerobic chamber again after mixing with the solution in the anoxic chamber.
[0018] 6. The gas stripping device utilized by the present invention, which is composed of a gas collecting hood, a gas stripping pipe and a gas-liquid separation device, is based upon the principle of gas stripping to lift the air and the sludge which has been subjected to aerobic reaction to the gas-liquid separation device for separation. Wherein, the air is directly evacuated or to be evacuated after deodorizing by means of being connected to the deodorization device, meanwhile, the sludge enters the main pipe of mud distribution, and then enters the lower part of the anaerobic chamber along the branch pipe of mud distribution which is arranged downwards vertically, after that, the sludge would mix with the sewage to complete anaerobic decomposition.
[0019] 7. The present invention adopts simple structure, which is convenient operate and has good effect. The present invention not only can complete the integrated structure of anaerobic, anoxic, aerobic characteristics and sedimentation, but also may effectively reduce the space required by the A 2 0 sewage treatment process, meanwhile, it can realize the self-refluxing of sludge and the unpowered self refluxing of nitrifying solution during the A 2 0 sewage treatment process, so that it can save energy effectively, and thus reduce the necessary cost of A 2 0 sewage treatment process.
Brief Description of the Drawings
[0020] Figure 1 is the schematic diagram of the structure of the present invention; Figure 2 is the structure schematic diagram of the A-A section view of Figure 1 of the present invention.
Detailed Description of the Presently Preferred Embodiments
[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0022] As shown in Figure 1 and Figure 2, the integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment, characterized in that consisting of a reaction pool 1, internal partition walls 2, outside partition walls 3, sewage inlet pipes 4, water distribution pipes 5, and a sewage pump 6, a gas collecting hood 7, a gas stripping pipe 8, a diversion hood 9, a water collecting weir 10 and a gas-liquid separation device 11, wherein, the said reaction pool 1 adopts a cylindrical structure with an opening at the upper end, and there are two internal partition walls 2 and two outside partition walls 3 are arranged in it. Furthermore, the said internal partition walls 2 are arranged in the outside partition walls 3, and the inner cavity of the reaction pool 1 is divided into an aerobic chamber 12, an anoxic chamber 13 and an anaerobic chamber 14 from inside to outside by the internal partition wall 2 and the outside partition wall 3, as well as there is an anoxic water inlet pipe 16 is equipped on the upper part of the outside partition wall 3, and the said anoxic water inlet pipe 16 is connected to the upper part of the anaerobic chamber 14 and the bottom of the anoxic chamber 13. Meanwhile, there is an aerobic water inlet pipe 17 is equipped on the said internal partition wall 2, and the said aerobic water inlet pipe 17 is connected to the upper part of the anoxic chamber 13 and the bottom of the aerobic chamber 12. Furthermore, there is a water distribution pipe 5 is equipped at the bottom of the said anaerobic chamber 14, and the said water distribution pipe 5 is connected to the sewage pump 6 arranged at the outside of the reaction pool 1 through the sewage inlet pipe 4, in addition, the said water distribution pipe 5 is arranged in an annular form along the bottom of the anaerobic chamber 14, and there are a lot of water outlet holes with openings upwards are arranged on the said water distribution pipe 5 uniformly. Meanwhile, there is an aeration device is equipped at the bottom of the said anaerobic chamber 12, and there is an air distributor 23 is equipped in the aerobic chamber 12 above the aeration device, as well as the said air distributor 23 is connected to the aerobic chamber 12.
[0023] The said aeration device consists of an air inlet pipe 20, an aeration blower 21 and an connector for aeration 22, wherein, the said aeration blower 21 is arranged outside of the reaction pool 1, and the air outlet of the said aeration blower 21 is connected to the connector for aeration 22 through the air inlet pipe 20, and the said connector for aeration 22 adopts cylindrical tubular structure, as well as the connector for aeration 22 is arranged at the bottom of the aerobic chamber 12 vertically, in addition, one end of the said air inlet pipe 20 is connected to the air outlet of the aeration blower 21, and the other end of the air inlet pipe 20 is connected to the inner cavity of the connector for aeration 22, and the air inlet pipe 20 is tangent to the connector for aeration 22. In this embodiment, there are two aeration blowers 21 are arranged, and both aeration blowers 21 are connected to the connector for aeration 22 through two air inlet pipes respectively, meanwhile, both air inlet pipes 20 are arranged symmetrically on both sides of the connector for aeration 22, in addition, the said air distributor 23 adopts funnel-shaped structure with openings at upper and lower ends, and the outside wall of which is connected to the inner wall of the aerobic chamber 12 through a connecting rod, as well as the opening of the said air distributor 23 at the lower end corresponds to the opening of the connector for aeration 22 at the upper end, furthermore, the inner diameter of the opening of the air distributor 23 at the lower end is smaller than that of the connector for aeration 22, and there are air ventilation holes are arranged on the side wall of the said air distributor 23 densely.
[0024] There is a diversion hood 9 is connected to the upper end of the said internal partition wall 2 tightly, and the height of the said internal partition wall 2 is lower than that of the outside partition wall 3, meanwhile, the diversion hood 9 and the outside partition wall 3 located above the diversion hood 9 form a sedimentation chamber 15, and the said diversion hood 9 is a conical hood with openings at the upper and lower ends, wherein, the opening of the said diversion hood 9 at the lower end is located in the anoxic chamber 13, and there is a first gap 18 is formed between such opening and the inner wall of the anoxic chamber 13, in addition, there is a water-resisting plate 24 is arranged vertically downwards at the lower end of the diversion hood 9, wherein, the upper end of the said water-resisting plate 24 is fixedly connected to the lower end of the diversion hood 9, and the lower end of the said water-resisting plate 24 is located below the through hole where the internal partition wall 2 and the aerobic water inlet pipe are connected.
[0025] There is a gas collecting hood 7 is equipped in the anaerobic chamber 12 located above the said diversion hood 9, and the said gas collecting hood 7 is a conical hood with openings at the upper and lower ends, which is installed on and covers the opening of the diversion hood 9 at the upper end, and the inner diameter of the opening of the gas collecting hood 7 at the lower end is greater than the outside diameter of the opening of the diversion hood 9 at the upper end, in addition, there is a second gap 19 is formed between the said gas collecting hood 7 and the diversion hood 9, and the opening of the said gas collecting hood 7 at the upper end is connected to the gas liquid separation device 11 through the gas stripping pipe 8, wherein, there is an exhaust vent and a mud outlet hole is equipped on the said gas-liquid separation device 11, and the said mud outlet hole is connected to the bottom of the anaerobic chamber 14 through the sludge distribution pipe, in addition, the said sludge distribution pipe consists of a main pipe for mud distribution 25 which is arranged in an annular form above the anaerobic chamber 14 and along such anaerobic chamber 14, and the said main pipe of mud distribution 25 is connected to the mud outlet hole of the gas-liquid separation device 11 through a connecting pipe, meanwhile, there are a lot of branch pipes for mud distribution 26, which are arranged vertically downwards, are equipped at the lower end of the said main pipe for mud distribution 25, and these branch pipes for mud distribution 26 are arranged uniformly in an annular form, in addition, the said branch pipes for mud distribution 26 are connected to the main pipe for mud distribution 25 and the bottom of the anaerobic chamber 14. Moreover, there is a water collecting weir 10 is equipped on the inner wall at the upper end of the said outside partition wall 3, and the said water collecting weir 10 is arranged in an annular form along the outside partition wall 3.
[0026] During operation, the sewage pump 6 pumps the sewage after pretreatment into the water distribution pipe 5, and then the sewage flows into the anaerobic chamber 14 uniformly from the outlet hole of the water distribution pipe 5 uniformly, after that, the sewage mixes with the returned sludge in the anaerobic chamber 14 to complete anaerobic decomposition. Wherein, the soluble organic matters existed in the sewage is absorbed by cells, and thus results in part of the BOD existed in the sewage being removed, and the other part of the NH3-N is removed based upon the synthesis of cells, so that makes the concentration of NH3-N existed in the water reduce, in addition, the phosphorus-accumulating microorganisms (polyphosphate-accumulating bacteria, etc.,) existed in the returned sludge would release phosphorus, which can satisfy the demand of bacteria for phosphorus, and thus makes the concentration of phosphorus in sewage increase.
[0027] The liquid level of the solution in the anaerobic chamber 14 rises. When the height of the liquid level reaches the position of the through hole which is located on the outside partition wall 3 and connected to the anoxic water inlet pipe 16, the solution in the anaerobic chamber 14 would enter the bottom of the anaerobic chamber 13 along the anoxic water inlet pipe 16, then, the denitrifying bacteria in the anoxic chamber 13 would reduce a large amount of nitrates existed in the nitrifying solution, which has been flowed back to the anoxic chamber 13 along the diversion hood 9, to N 2 based upon taking undecomposed carbonaceous organic material existed in the sewage as carbon source, and then release it, and thus makes the nitrogen concentration in the sewage decrease significantly. During this process, the phosphorus existed in the sewage almost keeps unchanged.
[0028] The solution after being subjected to anoxic reaction enters the aerobic chamber 12 along the aerobic liquid inlet pipe, and then, the air enters the connector for aeration 22 in tangent direction through the air inlet pipe 20 after being pressurized by the aeration blower 21, and then spirally flows upwards along the inner wall of the connector for aeration 22, at this time, the pressure gas flowing upwards spirally would collide with an air distributor 23 which adopts funnel-shaped structure and be diffused during the process of flowing upwards, and thus, the bubbles are broken and dispersed. After that, the pressure gas would flow upwards along the air ventilation holes on the air distributor 23 and the outside wall of the air distributor 23, and thus, it can provide sufficient oxygen for the aerobes in the aerobic chamber 12, meanwhile, the NH3-N (ammonia nitrogen) existed in the sewage is subjected to nitration reaction and thus generates nitrate, and the organic matters existed in the water would supply the phosphorus-uptake microorganisms with energy after being subjected to oxygenolysis, wherein, the microorganisms absorb phosphorus from the water, and then, the phosphorus enters the cell tissue and is concentrated in the microorganisms.
[0029] The mixed solution in the aerobic chamber 12 would flow upwards together with air along the aerobic chamber 12. Thus, when it flows to the diversion hood 9, the flow velocity of mixed solution speeds up while the pressure increases due to the diversion hood adopts conical structure, and the area of the inner cavity of which gradually decreases from bottom to top. Furthermore, when the mixed solution flows out from the opening of the diversion hood 9 at the upper end, the air would continue to flow upwards into the air stripping pipe 8 with part of the mixed solution, and then enters the gas-liquid separation device 11 along the gas stripping pipe 8, as well as completes separation in the gas-liquid separation device 11, after that, the air is evacuated from the air outlet of the gas-liquid separation device 11 to the atmosphere or to be evacuated after entering the deodorization device, then, the separated sludge enters the main pipe of mud distribution 25, and then enters the lower part of the anaerobic chamber 14 along the branch pipe of mud distribution 26, and thus the return of sludge can be realized, meanwhile, the other part of the mixed solution would flow downwards along the second gap 19 between the diversion hood 9 and the gas collecting hood 7, as well as the diversion hood 9, after that, it would flow into the anoxic chamber 13 along the first gap 18, and then flows into the lower part of the anoxic chamber 13 under the action of the water-resisting plate 24, and thus mixes with the solution in the anoxic chamber 13 to participate in the anoxic reaction, so as to realize the self-refluxing of nitrifying solution in the aerobic chamber 12.
[0030] The liquid level of the mixed solution flowing out from the opening of the diversion hood 9 at the upper end rises, and then, the solution is subjected to the sedimentation and clarification in the sedimentation chamber 15, after that, the clear water flows out from the water collecting weir 10, meanwhile, the sludge in the mixed solution flows downwards and into the anoxic chamber 13 along the diversion hood 9, which would be mixed with the solution in the anoxic chamber 13 and then enter the aerobic chamber 12 again.
[0031] It should be noted that the aforesaid embodiments are illustrations of the technical scheme of the present invention rather than imposing restrictions, thus, any equivalent replacements by those of ordinary skill in the art or other modifications made according to the prior art shall fall within the scope of the claims of the present invention, provided that they do not deviate from the ideas and scope of the technical scheme of the present invention.
Claims (7)
1. An integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment, characterized in that consisting of a reaction pool (1), internal partition walls (2), outside partition walls (3), sewage inlet pipes (4), water distribution pipes (5), and a sewage pump (6), a gas collecting hood (7), a gas stripping pipe (8), a diversion hood (9), a water collecting weir (10) and a gas-liquid separation device (11), wherein, the said reaction pool (1) adopts a cylindrical structure with an opening at the upper end, and there are two internal partition walls (2) and two outside partition walls (3) are arranged in it. Furthermore, the said internal partition walls (2) are arranged in the outside partition walls (3), and the inner cavity of the reaction pool (1) is divided into an aerobic chamber (12), an anoxic chamber (13) and an anaerobic chamber (14) from inside to outside by the internal partition wall (2) and the outside partition wall (3), as well as there is an anoxic water inlet pipe (16) is equipped on the upper part of the outside partition wall (3), and the said anoxic water inlet pipe (16) is connected to the upper part of the anaerobic chamber (14) and the bottom of the anoxic chamber (13). Meanwhile, there is an aerobic water inlet pipe (17) is equipped on the said internal partition wall (2), and the said aerobic water inlet pipe (17) is connected to the upper part of the anoxic chamber (13) and the bottom of the aerobic chamber (12). Furthermore, there is a water distribution pipe (5) is equipped at the bottom of the said anaerobic chamber (14), and the said water distribution pipe (5) is connected to the sewage pump (6) arranged at the outside of the reaction pool (1) through the sewage inlet pipe (4). Meanwhile, there is an aeration device is equipped at the bottom of the said anaerobic chamber (12), and there is an air distributor (23) is equipped in the aerobic chamber (12) above the aeration device, as well as the said air distributor (23) is connected to the aerobic chamber (12). In addition, there is a diversion hood (9) is connected to the upper end of the internal partition wall (2) tightly, and the height of the said internal partition wall (2) is lower than that of the outside partition wall (3), meanwhile, the diversion hood (9) and the outside partition wall (3) located above the diversion hood (9) form a sedimentation chamber (15), and the said diversion hood (9) is a conical hood with openings at the upper and lower ends, wherein, the opening of the said diversion hood (9) at the lower end is located in the anoxic chamber (13), and there is a first gap (18) is formed between such opening and the inner wall of the anoxic chamber (13), furthermore, there is a gas collecting hood (7) is equipped in the anaerobic chamber (12) located above the said diversion hood (9), and the said gas collecting hood (7) is a conical hood with openings at the upper and lower ends, which is installed on and covers the opening of the diversion hood (9) at the upper end, and the inner diameter of the opening of the gas collecting hood (7) at the lower end is greater than the outside diameter of the opening of the diversion hood (9) at the upper end, in addition, there is a second gap (19) is formed between the said gas collecting hood (7) and the diversion hood (9), and the opening of the said gas collecting hood (7) at the upper end is connected to the gas-liquid separation device (11) through the gas stripping pipe (8), wherein, there is an exhaust vent and a mud outlet hole is equipped on the said gas-liquid separation device (11), and the said mud outlet hole is connected to the bottom of the anaerobic chamber (14) through the sludge distribution pipe, and there is a water collecting weir (10) is equipped on the inner wall at the upper end of the said outside partition wall (3), and the said water collecting weir (10) is arranged in an annular form along the outside partition wall (3).
2. The said integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment according to claim 1, characterized in that: the said aeration device consists of an air inlet pipe (20), an aeration blower (21) and an connector for aeration (22), wherein, the said aeration blower (21) is arranged outside of the reaction pool (1), and the air outlet of the said aeration blower (21) is connected to the connector for aeration (22) through the air inlet pipe (20), and the said connector for aeration (22) adopts cylindrical tubular structure, as well as the connector for aeration (22) is arranged at the bottom of the aerobic chamber (12) vertically, in addition, one end of the said air inlet pipe (20) is connected to the air outlet of the aeration blower (21), and the other end of the air inlet pipe (20) is connected to the inner cavity of the connector for aeration (22), and the air inlet pipe (20) is tangent to the connector for aeration (22).
3. The said integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment according to claim 2, characterized in that: the said integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment according to claim 2, characterized in that: the said air distributor (23) adopts funnel-shaped structure with openings at upper and lower ends, and the outside wall of which is connected to the inner wall of the aerobic chamber (12) through a connecting rod, in addition, the opening of the said air distributor (23) at the lower end corresponds to the opening of the connector for aeration (22) at the upper end, and there are air ventilation holes are arranged on the side wall of the said air distributor (23) densely.
4. The said integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment according to claim 3, characterized in that the inner diameter of the opening of the said air distributor (23) at the lower end is smaller than that of the connector for aeration (22).
5. The said integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment according to claim 1, characterized in that the said water distribution pipe (5) is arranged in an annular form along the bottom of the anaerobic chamber (14), and there are a lot of water outlet holes with openings upwards are arranged on the said water distribution pipe (5) uniformly.
6. The said integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment according to claim 1, characterized in that: there is a water-resisting plate (24) is arranged vertically downwards at the lower end of the said diversion hood (9), wherein, the upper end of the said water-resisting plate (24) is fixedly connected to the lower end of the diversion hood (9), and the lower end of the said water-resisting plate (24) is located below the through hole where the internal partition wall (2) and the aerobic water inlet pipe are connected.
7. The said integrated anaerobic, anoxic, and aerobic treatment device for sewage treatment according to claim 1, characterized in that the said sludge distribution pipe consists of a main pipe for mud distribution (25) which is arranged in an annular form above the anaerobic chamber (14) and along such anaerobic chamber (14), and the said main pipe of mud distribution (25) is connected to the mud outlet hole of the gas liquid separation device (11) through a connecting pipe, meanwhile, there are a lot of branch pipes for mud distribution (26), which are arranged vertically downwards, are equipped at the lower end of the said main pipe for mud distribution (25), and these branch pipes for mud distribution (26) are arranged uniformly in an annular form, wherein, the said branch pipes for mud distribution (26) are connected to the main pipe for mud distribution (25) and the bottom of the anaerobic chamber (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021103721A AU2021103721A4 (en) | 2021-06-29 | 2021-06-29 | An Integrated Anaerobic, Anoxic, And Aerobic Treatment Device For Sewage Treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021103721A AU2021103721A4 (en) | 2021-06-29 | 2021-06-29 | An Integrated Anaerobic, Anoxic, And Aerobic Treatment Device For Sewage Treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2021103721A4 true AU2021103721A4 (en) | 2021-08-19 |
Family
ID=77274314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2021103721A Ceased AU2021103721A4 (en) | 2021-06-29 | 2021-06-29 | An Integrated Anaerobic, Anoxic, And Aerobic Treatment Device For Sewage Treatment |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2021103721A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11905194B1 (en) * | 2022-09-28 | 2024-02-20 | Zhejiang Haihe Environmental Technology Co., Ltd. | Deep denitrification treatment system for wastewater by anaerobic-anoxic-oxic based on high-oxygen three-phase contact |
-
2021
- 2021-06-29 AU AU2021103721A patent/AU2021103721A4/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11905194B1 (en) * | 2022-09-28 | 2024-02-20 | Zhejiang Haihe Environmental Technology Co., Ltd. | Deep denitrification treatment system for wastewater by anaerobic-anoxic-oxic based on high-oxygen three-phase contact |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101767876B (en) | Anaerobic-anoxic-hypoxic integrated reactor and application thereof | |
| CN103936229A (en) | Municipal sewage improved A2/O enhanced denitrification and dephosphorization treatment device and process | |
| CN214781015U (en) | Integrated sewage treatment device with concentric structure | |
| CN214653942U (en) | Integrated vertical A2O sewage treatment equipment applied to deep denitrification and dephosphorization | |
| AU2021103721A4 (en) | An Integrated Anaerobic, Anoxic, And Aerobic Treatment Device For Sewage Treatment | |
| CN111039521A (en) | Sewage treatment regeneration and reuse system and method for sewage treatment by using same | |
| CN114590981A (en) | Device for aerobic stabilization of anaerobic digestion residues of kitchen waste | |
| CN102010062B (en) | MBR wastewater treating system with double circular grooves | |
| CN201914974U (en) | Dual-circular groove membrane bioreactor (MBR) waste water treatment system | |
| CN112645445B (en) | Integrated anaerobic and anoxic aerobic treatment device for sewage treatment | |
| CN209835881U (en) | Distributed household type integrated sewage treatment device suitable for rural areas | |
| CN111977782A (en) | Immersed HEBR bioreactor, sewage treatment system and method | |
| CN111559837A (en) | Landfill leachate biochemical treatment system and process | |
| CN203866153U (en) | Improved reinforced A2/O denitrogenation and dephosphorization treating device for municipal sewage | |
| CN110713256A (en) | Biological pipe culvert reaction unit | |
| CN213060364U (en) | Nitrogen and phosphorus removal contact oxidation sewage treatment device | |
| CN213803102U (en) | Immersed HEBR bioreactor and sewage treatment system | |
| CN109336253B (en) | Sewage biological treatment device and method | |
| CN111285560A (en) | A/O process integrated sewage treatment device | |
| CN111003806A (en) | Novel AAO technology integration equipment | |
| CN219929796U (en) | UCT integrated bioreactor | |
| CN217780965U (en) | Micro-power A 2 O integrated urban and rural domestic sewage treatment device | |
| CN211170338U (en) | A2O activated sludge integrated sewage treatment system | |
| CN208980419U (en) | High-efficient denitrification and dephosphorization system associated with a kind of biological clarification tank and biofilter | |
| CN217148916U (en) | Domestic sewage treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |