CN209081680U - Continuous flow municipal sewage nitrification and nitrogen rejection facility - Google Patents
Continuous flow municipal sewage nitrification and nitrogen rejection facility Download PDFInfo
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- CN209081680U CN209081680U CN201821816410.3U CN201821816410U CN209081680U CN 209081680 U CN209081680 U CN 209081680U CN 201821816410 U CN201821816410 U CN 201821816410U CN 209081680 U CN209081680 U CN 209081680U
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- tank
- sedimentation tank
- aeration
- nitrification
- sludge
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- 239000010865 sewage Substances 0.000 title claims abstract description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 title abstract description 3
- 238000004062 sedimentation Methods 0.000 claims abstract description 45
- 239000010802 sludge Substances 0.000 claims abstract description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 55
- 230000003647 oxidation Effects 0.000 claims description 35
- 238000007254 oxidation reaction Methods 0.000 claims description 35
- 238000005273 aeration Methods 0.000 claims description 30
- 229910021529 ammonia Inorganic materials 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 8
- 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 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 244000005700 microbiome Species 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract description 4
- 241001453382 Nitrosomonadales Species 0.000 abstract description 2
- 230000001651 autotrophic effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000006396 nitration reaction Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910017464 nitrogen compound Inorganic materials 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model provides a kind of continuous flow municipal sewage nitrification and nitrogen rejection facility, including primary sedimentation tank, the pond A/O, aerating system, inclined-plate clarifying basin, Anammox area, secondary settling tank.The utility model uses continuous flow operation process, convenient for control.Compared with piston-flow process, the operation operation of continuous flow operation process is simpler, easily controllable, is conducive to technique and promotes and applies.Additional carbon is not necessarily to using device described in the utility model, saves medicine consumption.Anaerobic ammonia oxidizing bacteria is autotrophic type microorganism, can carry out denitrification reaction without additional carbon, and for traditional nitrification-denitrification treatment process, medicine consumption is greatly saved.By inclined-plate clarifying basin, short distance nitration sludge and Anammox biomembrane are separated, meet demand of the different denitrification microorganisms to dissolved oxygen.
Description
Technical Field
The utility model relates to a sewage biological treatment technical field especially relates to a continuous flow municipal sewage nitrifies and denitrification device, and the device is applicable to municipal sewage denitrification and handles.
Background
The action plan for preventing and treating water pollution, which is the severest plan for preventing and treating water pollution, issued by State Council in 2015, stipulates that 90% of urban centralized drinking water sources NH4 are supplied by 2030+N is less than or equal to 1mg/L, TP and less than or equal to 0.2 mg/L. In order to realize high-standard effluent quality, the requirement of upgrading and modifying urban sewage treatment plants is increasingly urgent, which leads to the significant increase of the sewage operation cost. The treatment mode of the traditional sewage treatment plant at the cost of energy and resource consumption is not sustainable, and the urgent need to seek for the technology and the modeAnd breaking through.
The anaerobic ammonia oxidation denitrification approach is discovered by dutch scientists in the eighties of the last century, the biochemical reaction is based on red anaerobic ammonia oxidizing bacteria, ammonia nitrogen is directly oxidized into nitrogen for denitrification by using a nitrite electron acceptor, the method is a recognized most economical and efficient sewage denitrification approach, and compared with the traditional biological treatment process, the anaerobic ammonia oxidation technology has the following main advantages: (1) the anaerobic ammonia oxidation denitrification carbon source is saved by more than 90 percent; (2) the aeration energy consumption is reduced by more than 50 percent; (3) the yield of the residual sludge is reduced by more than 50 percent, and the emission of greenhouse gas is reduced by more than 90 percent.
The stable operation of the short-cut nitrification in the short-cut nitrification and anaerobic ammonia oxidation process is critical, the realization of the short-cut nitrification is closely related to the size of the aeration quantity, if the over-aeration phenomenon occurs, not only is the energy consumption greatly wasted, but also the short-cut nitrification process can be damaged, so that the accurate aeration control device is very important for the stable operation of the short-cut nitrification and anaerobic ammonia oxidation process.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention provides a continuous flow urban sewage nitrification and denitrification apparatus, which is used for solving a plurality of problems in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a continuous flow urban sewage nitrification and denitrification apparatus, which comprises a primary sedimentation tank, an A/O tank, an aeration system, an inclined plate sedimentation tank, an anaerobic ammonia oxidation zone, and a secondary sedimentation tank; wherein,
the primary sedimentation tank is connected with a water inlet valve, a water inlet pump and a sludge discharge pump for discharging the residual sludge out of the system; the primary sedimentation tank is connected with the A/O tank through a water outlet weir;
the A/O pool comprises an A area and an O area, the A area and the O area respectively comprise a plurality of A pools and O pools which are connected in sequence, and each A pool in the A area is provided with a stirrer;
the aeration system comprises an aeration disc, a blower and an aeration main pipe, wherein the aeration disc and the blower are arranged in the O tank;
the inclined plate sedimentation tank is respectively connected with the last O tank and the anaerobic ammonia oxidation zone;
the anaerobic ammonia oxidation zone comprises a plurality of anaerobic ammonia oxidation tanks which are connected in sequence, and a plurality of circular biological membrane fillers are arranged in each anaerobic ammonia oxidation tank;
the secondary sedimentation tank is connected with the anaerobic ammonia oxidation area, and the secondary sedimentation tank is also connected with a sludge discharge pump for discharging excess sludge out of the system.
Preferably, the continuous flow urban sewage nitrification and denitrification device further comprises an aeration control system, wherein the aeration control system comprises a computer, and an ammonia nitrogen and nitrate nitrogen compound sensor and a dissolved oxygen sensor which are electrically connected with the computer, the ammonia nitrogen and nitrate nitrogen compound sensor is arranged in a front end A pool and a tail end O pool which are sequentially connected, and the dissolved oxygen sensor is arranged in each O pool; the computer is electrically connected to the blower.
Further preferably, the blower is a variable frequency blower.
Preferably, the top of the terminal O tank passes through a first bell mouth, and a perforated water distribution pipe connected with the first bell mouth is arranged in the inclined plate sedimentation tank and used for uniformly distributing sewage to the inclined plate sedimentation tank.
Preferably, the bottom of the inclined plate sedimentation tank is provided with a sludge collection tank, and a sludge reflux pump is connected between the sludge collection tank and the tank A at the front end and used for refluxing sludge precipitated in the inclined plate sedimentation tank to the front end of the tank A.
Preferably, a submersible pump is arranged in the anaerobic ammonia oxidation zone and is connected with each anaerobic ammonia oxidation tank through a perforated pipe.
Preferably, the upper part of the terminal anaerobic ammonia oxidation tank is provided with a second bell mouth, and the secondary sedimentation tank is connected with the anaerobic ammonia oxidation tank through the second bell mouth.
Preferably, a reflux pump and a valve are connected between the bottom of the secondary sedimentation tank and the anaerobic ammonia oxidation tank at the front end.
As mentioned above, the utility model discloses a continuous flow municipal sewage nitrifies and denitrification device has following beneficial effect:
1) and a continuous flow running process is adopted, so that the control is convenient. Compared with the intermittent flow process, the continuous flow operation process is simpler in operation, easy to control and beneficial to process popularization and application.
2) Saving aeration energy consumption. The aeration rate of the air blower is adjusted and the aeration is accurately controlled by the mode of monitoring the concentration of the ammonia nitrogen of the inlet water, the concentration of the ammonia nitrogen and the nitrate nitrogen of the outlet water and the concentration of the dissolved oxygen in the O tank on line.
3) No additional carbon source is needed, and the medicine consumption is saved. The anaerobic ammonium oxidation bacteria are autotrophic microorganisms, and can perform denitrification reaction without an additional carbon source, so that compared with the traditional nitrification-denitrification treatment process, the anaerobic ammonium oxidation bacteria greatly save the medicine consumption.
4) The short-cut nitrified sludge and the anaerobic ammonium oxidation biomembrane are separated by the inclined plate sedimentation tank, and the requirements of different denitrification microorganisms on dissolved oxygen are met.
5) The anaerobic ammonia oxidation biomembrane pool adopts a hydraulic mixing mode, so that the anaerobic environment in the pool body is not destroyed, the hydraulic shearing force can be increased, and the stability of the biomembrane is facilitated.
Drawings
FIG. 1 is a schematic view of the continuous flow urban sewage nitrification and denitrification apparatus of the present invention.
In the figure: 1, a valve; 2, a water inlet pump; 3, primary sedimentation tank; 4, a stirrer; 5 an online dissolved oxygen sensor; 6, online ammonia nitrogen and nitrate nitrogen compound sensor; 7, a bell mouth; 8A, a pool; a 9O pool; 10 a sludge reflux pump of the inclined plate sedimentation tank; 11 a variable frequency blower; 12 aeration disc; 13 inclined plate sedimentation tank; 14 perforating a water distribution pipe; 15 a computer; 16 a perforated tube; 17 circular biofilm filler; 18 submersible pumps; 19 anaerobic ammonia oxidation tank; 20 residual sludge discharge pump; 21, a secondary sedimentation tank; 22 a secondary sedimentation tank reflux pump.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in the figure, the utility model provides a continuous flow urban sewage nitrifies and denitrification device, including being equipped with just heavy pond (3), A pond (oxygen deficiency pond) (8), O pond (good pond) (9), inclined plate sedimentation tank (13), anaerobic ammonium oxidation pond (19), two heavy ponds (21), aeration systems, aeration control system. The primary sedimentation tank is provided with a water inlet valve (1) and a water inlet pump (2), after sewage is subjected to gravity sedimentation, excess sludge is discharged out of the system through an excess sludge discharge pump (20), and primary sedimentation water after sedimentation flows to the A tank (8) through a water outlet weir. The sewage firstly enters the area A, flows through each A pool through the upper and lower water passing gates under the stirring action of the stirrer (4), and then flows into the O pool (9). The variable-frequency blower (11) is connected with the aeration branch pipes through the main aeration pipe to supply air to the aeration discs (12) in the O tanks (9), and under the action of aeration, muddy water is in a completely mixed state, flows through the O tanks (9) through the water passing gate, and finally overflows to the perforated water distribution pipe (14) through the bell mouths (7) with large upper parts and small lower parts. The A pool and the last O pool (9) are respectively provided with 1 online ammonia nitrogen and dissolved oxygen composite sensor (6), each O pool (9) is respectively provided with 1 online dissolved oxygen sensor (5), each sensor is connected with a computer (15) to transmit data to a database, and a variable frequency blower (11) is also connected with the computer (15). Sewage overflowing from the last O tank (9) is uniformly distributed to an inclined plate sedimentation tank (13) through a perforated water distribution pipe (14), and through the action of an inclined plate, settled clear water flows to an anaerobic ammonia oxidation tank (19) through a water outlet weir, settled sludge is reserved in a sludge collection tank and flows back to the front end of a tank A (8) through an inclined plate sedimentation tank sludge reflux pump (10). Circular biomembrane filler (17) are equipped with in the anammox pond (19), and sewage flows through each anammox pond (19) through the sluice valve, is equipped with a immersible pump (18) in the pond, and the immersible pump draws water the back through perforated pipe (16) and flows back to in the pond, plays the effect of mixing. The sewage is treated by the anaerobic ammonia oxidation tank (19) and then flows to a secondary sedimentation tank (21) through a bell mouth, the sludge after gravity sedimentation is discharged out of the system through a residual sludge discharge pump (20), and the treated clean water flows out through a water outlet weir.
The device adopts the mode of on-line monitoring the ammonia nitrogen concentration of intaking, the ammonia nitrogen of play water and nitrate nitrogen concentration and dissolved oxygen concentration in the O pond, through adjusting the air-blower aeration rate, the accurate control aeration. Meanwhile, the short-cut nitrified sludge and the anaerobic ammonium oxidation biomembrane are separated under the action of the inclined plate sedimentation tank, and the requirements of denitrification microorganisms on different dissolved oxygen are met respectively. The anaerobic ammonia oxidation tank is mixed in a hydraulic mixing mode, so that the anaerobic environment in the tank body is not destroyed, the hydraulic shearing force can be increased, and the stability of a biological membrane is facilitated.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A continuous flow urban sewage nitrification and denitrification device is characterized by comprising a primary sedimentation tank, an A/O (anoxic/oxic) tank, an aeration system, an inclined plate sedimentation tank, an anaerobic ammonia oxidation zone and a secondary sedimentation tank; wherein,
the primary sedimentation tank is connected with a water inlet valve, a water inlet pump and a sludge discharge pump for discharging the residual sludge out of the system; the primary sedimentation tank is connected with the A/O tank through a water outlet weir;
the A/O pool comprises an A area and an O area, the A area and the O area respectively comprise a plurality of A pools and O pools which are connected in sequence, and each A pool in the A area is provided with a stirrer;
the aeration system comprises an aeration disc, a blower and an aeration main pipe, wherein the aeration disc and the blower are arranged in the O tank;
the inclined plate sedimentation tank is respectively connected with the last O tank and the anaerobic ammonia oxidation zone;
the anaerobic ammonia oxidation zone comprises a plurality of anaerobic ammonia oxidation tanks which are connected in sequence, and a plurality of circular biological membrane fillers are arranged in each anaerobic ammonia oxidation tank;
the secondary sedimentation tank is connected with the anaerobic ammonia oxidation area, and the secondary sedimentation tank is also connected with a sludge discharge pump for discharging excess sludge out of the system.
2. The continuous-flow urban sewage nitrification and denitrification apparatus according to claim 1, further comprising an aeration control system, wherein the aeration control system comprises a computer, and an ammonia nitrogen and nitrate nitrogen composite sensor and a dissolved oxygen sensor electrically connected with the computer, the ammonia nitrogen and nitrate nitrogen composite sensor is arranged in a front-end A tank and a tail-end O tank which are connected in sequence, and the dissolved oxygen sensor is arranged in each O tank; the computer is connected with the blower.
3. The continuous-flow municipal sewage nitrification and denitrification apparatus according to claim 1 or 2, wherein said blower is a variable frequency blower.
4. The continuous flow municipal sewage nitrification and denitrification apparatus according to claim 1 or 2, wherein the top of the end O-tank passes through a first bell mouth, and a perforated water distribution pipe connected with the first bell mouth is arranged in the inclined plate sedimentation tank for distributing sewage uniformly to the inclined plate sedimentation tank.
5. The continuous-flow urban sewage nitrification and denitrification apparatus according to claim 4, wherein a sludge collection tank is provided at the bottom of the inclined plate sedimentation tank, and a sludge reflux pump is connected between the sludge collection tank and the tank A at the front end thereof for refluxing the sludge settled in the inclined plate sedimentation tank to the front end of the tank A.
6. The continuous-flow municipal sewage nitrification and denitrification plant according to claim 1, 2 or 5, wherein a submersible pump is provided in said anammox zone, said submersible pump being connected to each anammox tank by perforated pipes.
7. The continuous-flow municipal sewage nitrification and denitrification apparatus according to claim 6, wherein the top of the anaerobic ammonium oxidation tank is provided with a second bell mouth, and the secondary sedimentation tank is connected with the anaerobic ammonium oxidation tank through the second bell mouth.
8. The continuous-flow municipal sewage nitrification and denitrification apparatus according to claim 7, wherein a reflux pump and a valve are connected between the bottom of the secondary sedimentation tank and the anaerobic ammonium oxidation tank at the front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821816410.3U CN209081680U (en) | 2018-11-05 | 2018-11-05 | Continuous flow municipal sewage nitrification and nitrogen rejection facility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821816410.3U CN209081680U (en) | 2018-11-05 | 2018-11-05 | Continuous flow municipal sewage nitrification and nitrogen rejection facility |
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| CN209081680U true CN209081680U (en) | 2019-07-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056707A (en) * | 2019-12-24 | 2020-04-24 | 北京城市排水集团有限责任公司 | Anaerobic ammonia oxidation autotrophic nitrogen removal system and method for municipal sewage |
| CN113582343A (en) * | 2021-08-26 | 2021-11-02 | 北控水务(中国)投资有限公司 | Method for stably realizing shortcut nitrification anaerobic ammonia oxidation process |
| CN113845219A (en) * | 2021-08-26 | 2021-12-28 | 北控水务(中国)投资有限公司 | Device for stably realizing shortcut nitrification anaerobic ammonia oxidation process |
-
2018
- 2018-11-05 CN CN201821816410.3U patent/CN209081680U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056707A (en) * | 2019-12-24 | 2020-04-24 | 北京城市排水集团有限责任公司 | Anaerobic ammonia oxidation autotrophic nitrogen removal system and method for municipal sewage |
| CN111056707B (en) * | 2019-12-24 | 2023-12-19 | 北京城市排水集团有限责任公司 | Urban sewage anaerobic ammonia oxidation autotrophic denitrification system and method |
| CN113582343A (en) * | 2021-08-26 | 2021-11-02 | 北控水务(中国)投资有限公司 | Method for stably realizing shortcut nitrification anaerobic ammonia oxidation process |
| CN113845219A (en) * | 2021-08-26 | 2021-12-28 | 北控水务(中国)投资有限公司 | Device for stably realizing shortcut nitrification anaerobic ammonia oxidation process |
| CN113845219B (en) * | 2021-08-26 | 2024-07-02 | 北控水务(中国)投资有限公司 | Device for stably realizing shortcut nitrification anaerobic ammonia oxidation process |
| CN113582343B (en) * | 2021-08-26 | 2024-07-02 | 北控水务(中国)投资有限公司 | Method for stably realizing shortcut nitrification anaerobic ammonia oxidation process |
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