CN219079234U - Advanced ammonia nitrogen removal system utilizing secondary sedimentation tank coupled biological membrane - Google Patents
Advanced ammonia nitrogen removal system utilizing secondary sedimentation tank coupled biological membrane Download PDFInfo
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- CN219079234U CN219079234U CN202222843989.5U CN202222843989U CN219079234U CN 219079234 U CN219079234 U CN 219079234U CN 202222843989 U CN202222843989 U CN 202222843989U CN 219079234 U CN219079234 U CN 219079234U
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 73
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000012528 membrane Substances 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims abstract description 26
- 239000010865 sewage Substances 0.000 claims abstract description 15
- 241000894006 Bacteria Species 0.000 claims abstract description 12
- 230000001546 nitrifying effect Effects 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000010802 sludge Substances 0.000 claims description 42
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 238000005273 aeration Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 6
- 238000010168 coupling process Methods 0.000 claims 6
- 238000005859 coupling reaction Methods 0.000 claims 6
- 238000000034 method Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 229910021529 ammonia Inorganic materials 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 241001453382 Nitrosomonadales Species 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000026676 system process Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- CVTZKFWZDBJAHE-UHFFFAOYSA-N [N].N Chemical group [N].N CVTZKFWZDBJAHE-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000009935 nitrosation Effects 0.000 description 1
- 238000007034 nitrosation reaction Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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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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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model relates to a deep ammonia nitrogen removal system utilizing a secondary sedimentation tank coupled biological membrane, which comprises: a short-cut nitrification tank (2) for generating and accumulating nitrite; a secondary sedimentation tank (11) for denitrifying the sewage; one end of the short-cut nitrification tank (2) is connected with the front end biochemical treatment through a short-cut nitrification water inlet pipe (1), and the other end of the short-cut nitrification tank is connected with the secondary sedimentation tank (11) through a short-cut nitrification water outlet pipe (10); the secondary sedimentation tank (11) is internally provided with biological filler (15) inoculated with nitrifying bacteria; the secondary sedimentation tank (11) is also provided with a mud discharge pipe (23) and a secondary sedimentation tank water outlet pipe (21). Compared with the prior art, the method has the advantages of solving the problem of residual ammonia nitrogen which cannot be removed in biological denitrification under the limitation of the existing nitrification and denitrification technology, improving the sewage denitrification efficiency and the treatment effect and the like.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a deep ammonia nitrogen removal system utilizing a secondary sedimentation tank coupled biological membrane.
Background
Nitrogen is a plant nutrient element and is an essential substance for life activities of crops, aquatic plants and microorganisms, but excessive nitrogen enters a water body to cause eutrophication of the water body, consume oxygen in the water body and is toxic to fish and certain aquatic organisms.
At present, sewage denitrification relies on a biological denitrification technology mainly comprising traditional nitrification and denitrification, and sufficient dissolved oxygen and carbon sources are required to be ensured in the technology so as to fully realize denitrification. With the development of society, industries such as food, chemical fertilizer, coking, landfill, pharmacy, cultivation and the like are rapidly developed, wastewater with high ammonia nitrogen and low carbon source can be generated in the industries, and by means of the traditional nitrification and denitrification technology, the measures such as increasing the carbon source adding amount and increasing the reflux are needed to be adopted when the wastewater is treated, so that the treatment cost and the treatment difficulty are high.
For the sewage which still has the problem of exceeding ammonia nitrogen after being treated by the traditional nitrification and denitrification technology, measures need to be considered to be taken for further removing the ammonia nitrogen.
Disclosure of Invention
The utility model aims to overcome at least one of the defects in the prior art and provide a deep ammonia nitrogen removal system using a secondary sedimentation tank coupled biological membrane. Solves the problem of residual ammonia nitrogen which cannot be removed in biological denitrification under the limitation of the existing nitrification and denitrification technology, and improves the denitrification efficiency and the treatment effect of sewage.
The aim of the utility model can be achieved by the following technical scheme:
the designer knows that the anaerobic ammonia oxidation process is a new denitrification process developed gradually in recent years. Under anaerobic conditions, ammonia is used as an electron donor, nitrite is used as an electron acceptor, and the ammonia is oxidized into nitrogen. Compared with the traditional nitrification and denitrification process, the process can save oxygen supply, does not need carbon source, and has lower sludge yield. As nitrite is needed as an electron acceptor in the anaerobic ammoxidation, a short-cut nitrification tank is arranged before the anaerobic ammoxidation, and partial ammonia nitrogen is nitrified to nitrite under the action of nitrite bacteria, thereby creating conditions for the subsequent anaerobic ammoxidation.
Compared with the traditional activated sludge method, the biological membrane system process has the advantages of strong impact load resistance, stable operation, less residual sludge and the like, so that the biological membrane system process is more and more widely applied to the field of sewage treatment. In general, biofilm systems are longer in sludge age and slow-growing bacteria are more prone to accumulate on the biofilm. The specific growth rate and yield of the anaerobic ammonia oxidizing bacteria are low, higher microorganism concentration can be obtained on the biological filler, a biological film system is formed, and based on the theory, the following specific scheme is proposed:
a deep ammonia nitrogen removal system utilizing a secondary sedimentation tank coupled biological membrane, the system comprising:
the short-cut nitrification tank is used for generating and accumulating nitrite;
the secondary sedimentation tank is used for denitrifying the sewage;
one end of the short-cut nitrification tank is connected with the front-end biochemical treatment through a short-cut nitrification water inlet pipe, and the other end of the short-cut nitrification tank is connected with the secondary sedimentation tank through a short-cut nitrification water outlet pipe;
the secondary sedimentation tank is internally provided with biological filler inoculated with nitrifying bacteria; the secondary sedimentation tank is also provided with a mud discharge pipe and a secondary sedimentation tank water outlet pipe.
Further, a sludge discharge assembly for discharging sludge during denitrification is arranged in the secondary sedimentation tank, and the sludge discharge assembly comprises a sludge suction machine and a sludge suction main pipe; the main suction pipe is connected with the sludge discharge pipe, and a sludge suction branch pipe is arranged between the main suction pipe and the sludge suction machine.
Further, the mud discharging component is fixedly arranged in the secondary sedimentation tank through the upright post.
Further, a stuffing box for filling biological stuffing is arranged in the clear water area at the upper part of the secondary sedimentation tank, and the stuffing box is fixed on the upright post.
Further, the stuffing box is made of an interception grating for preventing the loss of biological stuffing and facilitating the smooth flow.
Further, a central water distribution cylinder is arranged in the secondary sedimentation tank, an opening at the bottom of the central water distribution cylinder is connected with the short-distance nitrification water outlet pipe, and water distribution holes for water distribution are uniformly formed in the upper part of the central water distribution cylinder along the circumferential direction of the cylinder body.
Further, a steady flow cylinder for controlling the water flow direction is arranged around the water distribution hole
Further, a water outlet tank is arranged in the secondary sedimentation tank and is connected with a water outlet pipe of the secondary sedimentation tank; the two sides of the water outlet tank are provided with scum baffles for intercepting scum in the water outlet, and the water surface of the secondary sedimentation tank is provided with a scum tank for collecting scum.
Further, the shortcut nitrification tank is internally provided with a dissolved oxygen meter, a nitrite detector and an ammonia nitrogen detector, and is also provided with a stirring device and an aeration device;
the dissolved oxygen meter, the nitrite detector and the ammonia nitrogen detector are in signal connection with the control system; the aeration device is positioned at the bottom of the short-cut nitrification tank and is connected with the blower through an air pipe.
Further, a sludge pump is also arranged on the sludge discharge pipe.
Compared with the prior art, the utility model has the following advantages:
(1) The utility model mainly aims at the sewage which still has ammonia nitrogen residue after front-end biochemical treatment, and firstly, the sewage is subjected to nitrosation starting in a short-cut nitrification tank to convert part of ammonia nitrogen into nitrite. Inoculating anaerobic ammonia oxidizing bacteria in the biological filler in the secondary sedimentation tank, wherein the anaerobic ammonia oxidizing bacteria utilize nitrite and ammonia nitrogen in the water body to perform anaerobic ammonia oxidation, so that the ammonia nitrogen and nitrite in the water body are removed, and the denitrification rate of sewage is improved;
(2) In the utility model, the sewage from which ammonia nitrogen and nitrite are removed is precipitated under the action of gravity, and the precipitated sludge is discharged out of the tank body under the action of a sludge suction machine;
(3) In the utility model, the periodic motion of the mud suction machine drives the stuffing box to move along the secondary sedimentation tank, and the stuffing and water in the tank are mutually cut and fully contacted. The capacity of the upper clear water area of the secondary sedimentation tank is utilized to arrange a stuffing box, thereby reducing the requirement for another building.
Drawings
FIG. 1 is a schematic diagram of an ammonia nitrogen removal system in an embodiment;
FIG. 2 is a schematic diagram of a stuffing box according to an embodiment;
the reference numerals in the figures indicate: a short-cut nitrification water inlet pipe 1, a short-cut nitrification tank 2, a stirring device 3, a dissolved oxygen meter 4, a nitrite detector 5, an ammonia nitrogen detector 6, a blower 7, an air pipe 8, an aeration device 9, a short-cut nitrification water outlet pipe 10, a secondary sedimentation tank 11, a central water distribution cylinder 12, a steady flow cylinder 13, a stuffing box 14, a biological stuffing 15, an interception grid 16, a scum baffle 17, a scum groove 18, a mud suction machine 19, a mud suction main pipe 191, a mud suction branch pipe 192, a water outlet groove 20, a secondary sedimentation tank water outlet pipe 21, a mud pump 22 and a mud discharge pipe 23.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are provided, but the protection scope of the present utility model is not limited to the following embodiments.
Examples
A deep ammonia nitrogen removal system using a secondary sedimentation tank coupled biological membrane, as shown in fig. 1, the system comprising: a short-cut nitrification tank 2 for generating and accumulating nitrite; a secondary sedimentation tank 11 for denitrifying sewage; one end of the short-cut nitrification tank 2 is connected with the front-end biochemical treatment through a short-cut nitrification water inlet pipe 1, and the other end is connected with a secondary sedimentation tank 11 through a short-cut nitrification water outlet pipe 10; the secondary sedimentation tank 11 is internally provided with a biological filler 15 inoculated with nitrifying bacteria; the secondary sedimentation tank 11 is also provided with a mud discharging pipe 23 and a secondary sedimentation tank water outlet pipe 21. The sludge discharge pipe 23 is also provided with a sludge pump 22.
A sludge discharge assembly for discharging sludge during denitrification is arranged in the secondary sedimentation tank 11, and comprises a sludge suction machine 19 and a sludge suction main pipe 191; the main suction pipe 191 is connected with the discharge pipe 23, and a suction branch pipe 192 is arranged between the main suction pipe 191 and the suction machine 19. The mud discharging component is fixedly arranged in the secondary sedimentation tank 11 through a stand column. The upper clear water area of the secondary sedimentation tank 11 is provided with a stuffing box 14 for filling biological stuffing 15, and the stuffing box 14 is fixed on the upright post. As shown in fig. 2, the stuffing box 14 is made with an interception grating 16 for preventing the loss of the bio-stuffing 15 while facilitating the smooth flow of water.
A central water distribution cylinder 12 is arranged in the secondary sedimentation tank 11, the bottom opening of the central water distribution cylinder 12 is connected with the short-cut nitrification water outlet pipe 10, and water distribution holes for water distribution are uniformly formed in the upper part of the central water distribution cylinder 12 along the circumferential direction of the cylinder body. A steady flow cylinder 13 for controlling the water flow direction is arranged around the water distribution hole. A water outlet tank 20 is arranged in the secondary sedimentation tank 11, and the water outlet tank 20 is connected with a water outlet pipe 21 of the secondary sedimentation tank; the two sides of the water outlet tank 20 are provided with scum baffles 17 for intercepting scum in the water outlet, and the water surface of the secondary sedimentation tank 11 is provided with scum tanks 18 for collecting scum.
The shortcut nitrification tank 2 is internally provided with a dissolved oxygen meter 4, a nitrite detector 5 and an ammonia nitrogen detector 6, and is also provided with a stirring device 3 and an aeration device 9; the dissolved oxygen meter 4, the nitrite detector 5 and the ammonia nitrogen detector 6 are in signal connection with a control system; the aeration device 9 is positioned at the bottom of the short-cut nitrification tank 2 and is connected with the blower 7 through the air pipe 8.
Working principle: the short-cut nitrification water inlet pipe 1 is connected to an upper-stage biochemical treatment unit, the short-cut nitrification water outlet pipe 10 is connected to a water distribution cylinder 12 at the center of the secondary sedimentation tank 2, the secondary sedimentation tank water outlet pipe 20 is connected to a downstream treatment unit, sludge in the secondary sedimentation tank 2 is discharged out of the tank body through a sludge pipe 23 of a sludge suction machine 19, a sludge pump 22 conveys return sludge to the upstream biochemical treatment unit through the sludge pipe 23, and residual sludge is discharged to a subsequent sludge treatment unit through the sludge pipe 23.
The nitrifying bacteria are inoculated in the short-cut nitrifying pond 2, a dissolved oxygen meter 4, a nitrite detector 5 and an ammonia nitrogen detector 6 are arranged in the short-cut nitrifying pond, detection signals are transmitted to a control system, and the stirring device 3 and the air blower 7 are controlled to be started and stopped so that the concentration of dissolved oxygen in the short-cut nitrifying pond is in a low-dissolved oxygen state, and the propagation of nitrite bacteria and the elimination of nitrate bacteria are promoted in the low-dissolved oxygen state. After the wastewater containing ammonia and nitrogen of the upstream treatment structure enters the short-cut nitrification tank, partial ammonia nitrogen is subjected to short-cut nitrification under the action of nitrite bacteria, so that nitrite is generated and accumulated. The air blower 7 sends air to the aeration device 9 through the air pipe 8, and the aeration device 9 uniformly distributes the air at the bottom of the tank.
The upper clear water area in the secondary sedimentation tank 11 is provided with a stuffing box 14 which is fixed on an upright post of the mud absorbing component, the stuffing box 14 is used for filling biological stuffing 15, and anaerobic ammonia oxidizing bacteria are inoculated on the biological stuffing 15. By utilizing the characteristic of low specific growth rate and low yield of anaerobic ammonia oxidizing bacteria, rapid propagation and accumulation can be realized on the biological membrane. Under the conditions of no carbon source and no aeration, the anaerobic ammonia oxidation bacteria takes ammonia in the inflow water as an electron donor and nitrite as an electron acceptor to realize denitrification. The effluent of the short-cut nitrification tank 2 enters a secondary sedimentation tank 11, and the anaerobic ammonia oxidation bacteria utilize the residual ammonia nitrogen in the water and nitrite generated in the short-cut nitrification tank 2 to generate nitrogen, and the nitrogen is discharged out of the tank body to finish denitrification.
The secondary sedimentation tank 11 is internally provided with a central water distribution cylinder 12 and a steady flow cylinder 13, the opening at the bottom of the central water distribution cylinder 12 is connected with the water outlet pipe of the short-cut nitrification tank, and the upper part of the central water distribution cylinder is uniformly provided with openings along the circumferential direction of the cylinder body for water distribution. The steady flow cylinder 13 is used for controlling the water flow direction. The scum baffle 17 is arranged at the water outlet tank 20, and the scum tank 18 is arranged on the water surface inside the water outlet tank 20. The stuffing box 14 is made of interception grids 16, which are used for preventing the stuffing from running off and facilitating the smooth flow of water.
The sewage from which ammonia nitrogen and nitrite are removed is precipitated under the action of gravity, and the precipitated sludge is discharged out of the tank body under the action of a sludge suction machine 19. The periodic movement of the suction dredge 19 drives the stuffing box 14 to move along the secondary sedimentation tank 10, and the stuffing and water in the tank are mutually cut and fully contacted. The capacity of the clear water area at the upper part of the secondary sedimentation tank 10 is utilized to arrange a stuffing box 14, so that the requirement for another building is reduced. The periodic movement means that the liquid level is lowered when the suction machine 19 sucks the water, and the liquid level is raised and reciprocally alternated when the central water distribution cylinder 12 is filled with water; the stuffing box 14 moves along the secondary sedimentation tank 10, which means relative movement, and in fact the stuffing box 14 is almost motionless, and the up-and-down movement of the liquid surface causes the stuffing box 14 to move correspondingly along the liquid surface of the secondary sedimentation tank 10.
The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.
Claims (10)
1. An ammonia nitrogen system is got rid of to degree of depth that utilizes two sedimentation tank coupling biomembrane, characterized in that this system includes:
a short-cut nitrification tank (2) for generating and accumulating nitrite;
a secondary sedimentation tank (11) for denitrifying the sewage;
one end of the short-cut nitrification tank (2) is connected with the front end biochemical treatment through a short-cut nitrification water inlet pipe (1), and the other end of the short-cut nitrification tank is connected with the secondary sedimentation tank (11) through a short-cut nitrification water outlet pipe (10);
the secondary sedimentation tank (11) is internally provided with biological filler (15) inoculated with nitrifying bacteria; the secondary sedimentation tank (11) is also provided with a mud discharge pipe (23) and a secondary sedimentation tank water outlet pipe (21).
2. The deep ammonia nitrogen removing system utilizing the secondary sedimentation tank coupling biological membrane according to claim 1, wherein a sludge discharging component for discharging sludge during denitrification is arranged in the secondary sedimentation tank (11), and the sludge discharging component comprises a sludge suction machine (19) and a sludge suction main pipe (191); the main suction pipe (191) is connected with the sludge discharge pipe (23), and a branch suction pipe (192) is arranged between the main suction pipe (191) and the suction dredge (19).
3. The deep ammonia nitrogen removal system utilizing the secondary sedimentation tank coupling biological membrane according to claim 2, wherein the sludge discharge assembly is fixedly arranged in the secondary sedimentation tank (11) through a stand column.
4. A deep ammonia nitrogen removal system using a secondary sedimentation tank coupled biofilm according to claim 3, wherein a stuffing box (14) for filling biological stuffing (15) is arranged in the clear water area at the upper part of the secondary sedimentation tank (11), and the stuffing box (14) is fixed on a column.
5. The deep ammonia nitrogen removal system using secondary sedimentation tank coupled biological membrane according to claim 4, wherein the stuffing box (14) is made of an interception grid (16) for preventing the loss of biological stuffing (15) and facilitating the smooth water flow.
6. The ammonia nitrogen removing system by utilizing the secondary sedimentation tank coupling biological membrane according to claim 1, wherein a central water distribution cylinder (12) is arranged in the secondary sedimentation tank (11), an opening at the bottom of the central water distribution cylinder (12) is connected with the short-cut nitrification water outlet pipe (10), and water distribution holes for water distribution are uniformly formed in the upper part of the central water distribution cylinder (12) along the circumferential direction of the cylinder.
7. The system for deeply removing ammonia nitrogen by using the secondary sedimentation tank coupled biological membrane according to claim 6, wherein a steady flow cylinder (13) for controlling the water flow direction is arranged around the water distribution hole.
8. The ammonia nitrogen removing system by utilizing the secondary sedimentation tank coupling biological film according to claim 1, wherein a water outlet tank (20) is arranged in the secondary sedimentation tank (11), and the water outlet tank (20) is connected with a water outlet pipe (21) of the secondary sedimentation tank; both sides of the water outlet tank (20) are provided with scum baffles (17) for intercepting scum in the water outlet, and the water surface of the secondary sedimentation tank (11) is provided with a scum tank (18) for collecting scum.
9. The deep ammonia nitrogen removal system utilizing the secondary sedimentation tank coupling biological membrane according to claim 1, wherein the short-cut nitrification tank (2) is internally provided with a dissolved oxygen meter (4), a nitrite detector (5) and an ammonia nitrogen detector (6), and is also provided with a stirring device (3) and an aeration device (9);
the dissolved oxygen meter (4), the nitrite detector (5) and the ammonia nitrogen detector (6) are in signal connection with a control system; the aeration device (9) is positioned at the bottom of the short-range nitrification tank (2) and is connected with the blower (7) through the air pipe (8).
10. The deep ammonia nitrogen removal system using a secondary sedimentation tank coupled biological membrane according to claim 1, wherein the sludge discharge pipe (23) is further provided with a sludge pump (22).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117566908A (en) * | 2023-11-21 | 2024-02-20 | 北京城市排水集团有限责任公司 | Denitrification device and method applied to sedimentation tank of anaerobic ammonium oxidation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117566908A (en) * | 2023-11-21 | 2024-02-20 | 北京城市排水集团有限责任公司 | Denitrification device and method applied to sedimentation tank of anaerobic ammonium oxidation system |
| CN117566908B (en) * | 2023-11-21 | 2024-12-06 | 北京城市排水集团有限责任公司 | Denitrification device and method for anaerobic ammonium oxidation system sedimentation tank |
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Inventor after: Xiong Feilong Inventor after: Zhu Yuting Inventor after: Wang Xi Inventor after: Chen Jingjing Inventor after: Guo Yue Inventor after: Wang Yige Inventor before: Xiong Longfei Inventor before: Zhu Yuting Inventor before: Wang Xi Inventor before: Chen Jingjing Inventor before: Guo Yue Inventor before: Wang Yige |
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