CN209890352U - AAAOAO-based adjustable nitrogen and phosphorus removal device - Google Patents
AAAOAO-based adjustable nitrogen and phosphorus removal device Download PDFInfo
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Abstract
The utility model relates to an adjustable nitrogen and phosphorus removal device based on AAAOAO, including anoxic zone in advance, anaerobic zone, first anoxic zone, first variable mode regulatory region, first aerobic zone, the variable mode regulatory region of second, second anoxic zone, second aerobic zone and sedimentation zone. The first variable mode adjusting area and the second variable mode adjusting area are both provided with an aeration device and a stirring device, and can be switched into an anoxic area or an aerobic area. The sludge is subjected to alternate anoxic and aerobic processes repeatedly, the probability of sludge bulking is well inhibited, the efficiency of the sedimentation tank is improved, and the sludge reflux ratio can be reduced to 50%, so that the operation cost is reduced. The setting in variable mode regulatory region for the HRT adjustment in aerobic zone or anoxic zone is nimble, and whole device has impact load resistant's ability, guarantees that the play water nitrogen phosphorus concentration is stable.
Description
Technical Field
The utility model relates to a town sewage treatment field specifically is an adjustable nitrogen and phosphorus removal device based on AAAOAO.
Background
The development of the town sewage treatment technology is closely related to the public health safety of cities and the improvement of human living environment. At present, the eutrophication problem of urban sewage in China is outstanding, and the nitrogen and phosphorus content in the sewage is high, so that the development and design of a more efficient and more stable nitrogen and phosphorus removal device is one of the most concerned research directions in the field of urban sewage treatment.
The most common denitrification and dephosphorization device at present adopts AAO technology, and the device comprises an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation tank, and can play a certain denitrification and dephosphorization effect, but the traditional AAO denitrification and dephosphorization device still has the following problems: the nitrogen and phosphorus removal efficiency is low, and particularly under the condition of high nitrogen and phosphorus load or impact load, the nitrogen and phosphorus content of the effluent of the device cannot meet the standard requirement of the standard IV water standard of the urban sewage treatment plant; carbon source competition exists in each area of the device, so that the carbon source is insufficient, a large amount of carbon source needs to be additionally supplemented, and the running cost of the device is high.
SUMMERY OF THE UTILITY MODEL
For the carbon source configuration that exists of solving traditional AAO nitrogen and phosphorus removal device among the prior art unreasonable, nitrogen and phosphorus removal efficiency is limited, the device load-bearing shock resistance is more weak technical problem, the utility model provides an adjustable nitrogen and phosphorus removal device based on AAAOAO.
The utility model adopts the following technical scheme:
the AAAOAO-based adjustable nitrogen and phosphorus removal device comprises a pre-anoxic zone, an anaerobic zone, a first anoxic zone, a first variable mode adjusting zone, a first aerobic zone, a second variable mode adjusting zone, a second anoxic zone, a second aerobic zone and a settling zone which are sequentially communicated;
the first variable mode adjusting area is provided with a first aeration device and a first stirring device; the height of the stirring part of the first stirring device is lower than that of the water outlet of the first variable mode adjusting area; the first aeration device is detachably arranged on the bottom of the container or the side wall of the container in the first variable mode adjusting area;
the second variable mode adjusting area is provided with a second aeration device and a second stirring device; the height of the stirring part of the second stirring device is lower than that of the water outlet of the second variable mode adjusting area; the second aeration device is detachably arranged on the bottom of the container or the side wall of the container of the second variable mode adjusting area.
Preferably, the container wall on one side of the first variable mode adjustment zone is a horizontally movable partition plate; an aeration device is arranged on the clapboard; the first stirring device is arranged at the upper end of the clapboard through a telescopic arm capable of adjusting horizontal displacement.
Furthermore, the first variable mode adjusting area is arranged adjacent to the first aerobic area; the first variable mode adjusting area and the first aerobic area share a common container wall; a through hole is arranged on the common container wall; the first variable mode adjusting area is communicated with the first aerobic area through a through hole; the common container wall is a baffle.
Preferably, the AAAOAO-based adjustable nitrogen and phosphorus removal device further comprises a water inlet well, a plurality of water inlet pumps, a water inlet distribution channel and a plurality of flow regulators; the water inlet well is communicated with the pre-anoxic zone, the anaerobic zone and the first anoxic zone in parallel through a water inlet distribution channel; the pipeline of the water inlet distribution channel, which is respectively communicated with the pre-anoxic zone, the anaerobic zone and the first anoxic zone, is a water inlet distribution channel branch; each water inlet distribution channel branch is provided with a water inlet pump and a flow regulator. Preferably, the first anoxic zone and the second anoxic zone are both provided with a carbon source adding device.
Preferably, the AAAOAO-based adjustable nitrogen and phosphorus removal device further comprises a mixed liquid return channel and a mixed liquid return pump; the mixed liquor return channel sequentially communicates the second variable mode regulation zone, the mixed liquor return pump and the first anoxic zone.
Preferably, the AAAOAO-based adjustable nitrogen and phosphorus removal device further comprises a sludge return channel and a sludge return pump; the sludge return channel is used for sequentially communicating the sedimentation zone, the sludge return pump and the pre-anoxic zone.
Further, the first variable mode adjusting zone, the first aerobic zone, the second variable mode adjusting zone and the second aerobic zone are all provided with aeration devices.
Further, the AAAOAO-based adjustable nitrogen and phosphorus removal device further comprises an air blower and a gas transmission pipeline; the air blower is respectively communicated with the first aeration device, the aeration device of the first aerobic zone, the second aeration device and the aeration device of the second aerobic zone through air transmission pipelines.
Preferably, the first stirring device and the second stirring device are both liftable underwater stirring devices.
The utility model has the advantages or beneficial effects:
compared with the prior art, the adjustable nitrogen and phosphorus removal device based on AAAOAO provided by the utility model is provided with the pre-anoxic zone to avoid the influence of nitrate in the returned sludge on the phosphorus release of the sludge; the first variable mode adjusting area is arranged, so that the HRT configuration of the aerobic area or the anaerobic area can be conveniently adjusted, the whole device has the capacity of resisting impact load, and the stable standard of nitrogen and phosphorus of effluent is ensured; the second variable mode adjusting area is arranged and can be used for reducing dissolved oxygen of water discharged from the first aerobic area, avoiding the over-high DO value of the backflow mixed liquid from influencing the anoxic environment of the first anoxic area, and further stabilizing the denitrification capability of the system. Water is fed into the pre-anoxic zone, the anaerobic zone and the first anoxic zone, and carbon source adding devices are arranged in the first anoxic zone and the second anoxic zone to supplement carbon sources additionally, so that the carbon sources are utilized to the maximum. And the system also has improved shock resistance by leveling the pollutant load through multi-point water inflow. The sludge sedimentation is high, the sludge is subjected to alternate anoxic and aerobic processes repeatedly, the probability of sludge bulking is better inhibited, the efficiency of the sedimentation tank is improved, the sludge reflux ratio can be reduced to 50%, and the operation cost of the device is reduced.
Drawings
FIG. 1 is a schematic view of an adjustable denitrification and dephosphorization apparatus based on AAAOAO provided by the embodiment of the present invention.
In the figure: 001-pre-anoxic zone, 002-anaerobic zone, 003-first anoxic zone, 004-first variable mode regulation zone, 005-first aerobic zone, 006-second variable mode regulation zone, 007-second anoxic zone, 008-second aerobic zone, 009-settling zone, 1-stirring device, 2-flow regulator, 3-partition, 4-telescopic arm, 5-gas flowmeter, 6-valve, 7-blower, 8-water intake pump, 9-mixed liquid reflux pump, 10-sludge reflux pump, 11-water intake well, 12-water intake distribution channel, 13-mixed liquid reflux channel, 14-sludge reflux channel, 41-first aeration device, 42-first stirring device, 61-second aeration device, 62-second stirring device, 51-third aeration device, 81-fourth aeration device.
Detailed Description
The following detailed description of the embodiments according to the present invention with reference to the preferred embodiments is as follows:
examples
Referring to fig. 1, this embodiment provides an adjustable denitrification and dephosphorization apparatus based on AAAOAO.
The AAAOAO-based adjustable nitrogen and phosphorus removal device comprises a pre-anoxic zone 001, an anaerobic zone 002, a first anoxic zone 003, a first variable mode adjusting zone 004, a first aerobic zone 005, a second variable mode adjusting zone 006, a second anoxic zone 007, a second aerobic zone 008 and a settling zone 009 which are sequentially communicated;
the first variable mode adjustment zone 004 is provided with a first aeration device 41 and a first stirring device 42; the height of the stirring part of the first stirring device 42 is lower than the height of the water outlet of the first variable mode adjusting area 004; the first aeration apparatus 41 is detachably provided on the bottom of the vessel or the side wall of the vessel of the first variable mode adjustment zone 004;
the second variable mode adjustment zone 006 is provided with a second aeration device 61 and a second stirring device 62; the height of the stirring part of the second stirring device 62 is lower than the height of the water outlet of the second variable mode adjustment region 006; the second aeration apparatus 61 is detachably provided to the bottom of the tank or the sidewall of the tank of the second variable mode adjustment zone 006.
Preferably, the container wall on the side of the first variable mode adjustment zone 004 is a horizontally movable partition 3; the first aeration device 41 is arranged on the clapboard 3; the first stirring device 42 is installed at the upper end of the partition 3 through a telescopic arm 4 adjustable in horizontal displacement. The first variable mode modulation zone 004 is located immediately adjacent to the first aerobic zone 005; the first variable mode tuning zone 004 shares a common vessel wall with the first aerobic zone 005; the common container wall is provided with through holes (not shown in fig. 1); the first variable mode adjustment region 004 is communicated with the first aerobic region 005 through a through hole; the common vessel wall is a baffle 3. Through the horizontal migration of baffle 3, can adjust the space volume of first variable mode regulatory region 004 and first aerobic zone 005 simultaneously to the realization is to the nimble adjustment of the HRT of first variable mode regulatory region 004 and first aerobic zone 005, especially to the intake that quality of water variation range is big, can better control out water quality of water and stabilize at lower level.
In order to reduce the addition amount of the additional carbon source, the AAAOAO-based adjustable nitrogen and phosphorus removal device further includes a water inlet well 11, a plurality of water inlet pumps 8, a water inlet distribution channel 12, and a plurality of flow regulators 2; the pipelines of the water inlet distribution channel 12, which are respectively communicated with the pre-anoxic zone 001, the anaerobic zone 002 and the first anoxic zone 003 are water inlet distribution channel branches; each water inlet distribution channel branch is provided with a water inlet pump 8, a flow regulator 2 and a valve 6.
Preferably, the first anoxic zone 003 and the second anoxic zone 007 are both provided with carbon source adding devices.
In order to realize the backflow of the mixed liquid and thus enhance the denitrification effect, the AAAOAO-based adjustable denitrification and dephosphorization apparatus further includes a mixed liquid backflow channel 13 and a mixed liquid backflow pump 9; mixed liquor return conduit 13 communicates second variable mode modulation zone 006, mixed liquor return pump 9, and first anoxic zone 003 in that order. The mixed liquor return channel 13 is also provided with a flow regulator 2 and a valve 6 for regulating the flow of the mixed liquor return.
In order to realize sludge backflow and maintain the relative stability of the sludge concentration, the AAAOAO-based adjustable nitrogen and phosphorus removal device further comprises a sludge backflow channel 14 and a sludge backflow pump 10; the sludge return channel 14 connects the settling zone 009, the sludge return pump 10 and the pre-anoxic zone 001 in sequence. The sludge return channel 14 is provided with a valve 6 for regulating the flow of the sludge return.
Preferably, the first variable mode adjustment zone 004, the first aerobic zone 005, the second variable mode adjustment zone 006 and the second aerobic zone 008 are provided with aeration devices; the aeration device of the first aerobic zone 005 is a third aeration device 51; the aeration device of the second aerobic zone 008 is the fourth aeration device 81. The pre-anoxic zone 001, the anaerobic zone 002, the first anoxic zone 003, the first variable mode adjustment zone 004, the second variable mode adjustment zone 006 and the second anoxic zone 007 are all provided with stirring devices 1, wherein the stirring device of the first variable mode adjustment zone 004 is the first stirring device 42, and the stirring device of the second variable mode adjustment zone 006 is the second stirring device 62.
The embodiment of the adjustable nitrogen and phosphorus removal device based on AAAOAO further comprises an air blower 7 and a gas transmission pipeline 15; the blower 7 is respectively communicated with the first aeration device 41, the second aeration device 61, the third aeration device 51 and the fourth aeration device 81 through the air pipelines 15. The gas flow meter 5 is arranged on the main pipeline of the gas transmission pipeline 15 for regulating the gas flow, and each branch of the gas transmission pipeline 15 going to the first aeration device 41, the second aeration device 61, the third aeration device 51 and the fourth aeration device 81 is respectively provided with a valve 6.
In order to be capable of meeting the requirements of two modes on stirring, the first stirring device and the second stirring device are both liftable underwater stirring devices. The mounting height of the stirring device can be flexibly adjusted according to the requirement.
When the AAAOAO-based adjustable nitrogen and phosphorus removal device provided by the embodiment is adopted, sewage enters the interior of the AAAOAO-based adjustable nitrogen and phosphorus removal device in a multipoint sample introduction mode. The sewage in the water inlet well 11 is respectively injected into the pre-anoxic zone 001, the anaerobic zone 002 and the first anoxic zone 003 along the water inlet distribution channel 12 through the water inlet pump 8, the water inlet flow of each branch is adjusted through the flow regulator 2 arranged on the branch of the water inlet distribution channel, and therefore the flexible adjustment of the water inlet proportion of the three areas of the pre-anoxic zone 001, the anaerobic zone 002 and the first anoxic zone 003 is realized. The design of multi-point sampling can relieve the dependence of the device on an additional carbon source to a certain extent, save the running cost of the device, and can be used as the carbon source because the inlet water (namely sewage) contains organic matters; on the other hand, the arrangement of the water inlet in the pre-anoxic zone 001, the anaerobic zone 002 and the first anoxic zone 003 at the front end of the device also realizes the balance of the pollutant load of the water inlet, and the treatment pressure of the pre-anoxic zone 001 is shared, so that the sewage treatment efficiency of the device is more stable, particularly under the conditions of high pollutant load or sudden change of water quality. In addition, carbon source adding devices are also arranged in the first anoxic zone 003 and the second anoxic zone 007. The carbon source in the inlet water and the additionally added carbon source provide nutrition for the activated sludge in each area.
After entering the pre-anoxic zone 001, the sewage flows through the anaerobic zone 002, the first anoxic zone 003, the first variable mode adjusting zone 004, the first aerobic zone 005, the second variable mode adjusting zone 006, the second anoxic zone 007 and the second aerobic zone 008 in sequence, finally flows into the sedimentation tank 009, and then is subjected to solid-liquid separation in the sedimentation tank 009. The liquid obtained by precipitation in the precipitation tank 009 flows out to obtain effluent. The solid (i.e. sludge mixed liquor) obtained by sedimentation in the sedimentation tank 009 is pumped out by the sludge reflux pump 10 and enters the pre-anoxic zone 001 along the sludge reflux channel 14 to complete the sludge reflux process so as to ensure that the sludge concentration in the whole device is relatively stable. In addition, under the action of the mixed liquor backflow pump 9, the sewage flowing through the second variable mode adjustment region 006 enters the first anoxic region 003 along the mixed liquor backflow channel 13, and the mixed liquor backflow process is completed. The reflux process of the mixed liquid can strengthen the denitrification.
Mode switching between the first variable mode adjustment region 004 and the second variable mode adjustment region 006 can be achieved by (taking the first variable mode adjustment region 004 as an example): the first variable mode adjustment zone 004 is provided with the first stirring means 42 and the first aeration means 41. When the mode needs to be switched to the aerobic zone mode, the flow rate and the aeration time of the first aeration device 41 are adjusted by controlling the first aeration device 41 to be in an open state, and the DO value in the first variable mode adjusting zone 004 is increased to enable the first variable mode adjusting zone 004 to realize the function of the aerobic zone; when the mode needs to be switched to the anoxic zone mode, the first aeration device 41 is controlled to be in the closed state, the first stirring device 42 is started, and the stirring state of the first stirring device 42 is adjusted, so that the first variable mode adjusting zone 004 realizes the function of the anoxic zone.
Further, the space volume of the first variable mode adjusting area 004 and the space volume of the first aerobic area 005 which is adjacent to the first variable mode adjusting area 004 can be flexibly adjusted by horizontally moving the partition plate 3, so that the HRT of the aerobic area mode (or the anoxic area mode) and the HRT of the first aerobic area 005 of the first variable mode adjusting area 004 can be flexibly adjusted, and the adjustment for adapting to seasonal changes or water quality changes is convenient to meet the requirement that nitrogen and phosphorus in the effluent meet the standard stably. When the partition plate 3 is moved, the first stirring device 42 is placed in the center of the inner cavity of the first variable mode adjustment area 004 by adjusting the length of the telescopic arm 4, so as to ensure that the stirring can be smoothly performed.
The feeding amount of the extra carbon source can be reduced to a certain extent by supplying the carbon source through the inlet water, and the running cost of the device is reduced. The return sludge and 10 to 30 percent of inlet water enter the pre-anoxic zone 001, and nitrate in the return sludge reacts with a carbon source in the inlet water to carry out denitrification treatment. The effluent of the pre-anoxic zone 001 and 30-50% of the inlet water enter the anaerobic zone 002, the polyphosphate in the anaerobic zone 002 polyphosphate-accumulating bacteria hydrolyzes to generate energy, PO4 is released into the water, and simultaneously the energy is used for absorbing the carbon source in the inlet water and is gathered in the body in the form of PHB (polyhydroxybutyrate). The 002 effluent of the anaerobic zone, 30-50 percent of the influent and the reflux mixed liquid enter the first anoxic zone 003, the requirement of the denitrification process of the first anoxic zone 003 on a carbon source is an important link for ensuring biological denitrification, and therefore, a carbon source feeding point is set to ensure the smooth operation of the denitrification process. The effluent of the first anoxic zone 003 passes through the first variable mode adjusting zone 004 and then enters the first aerobic zone 005, under aerobic conditions, energy is generated by PHB in an oxide body, the energy is obtained by ADP, and PO4 is absorbed from water to form ATP so as to finish excessive absorption of phosphorus, and the first aerobic zone 005 controls the concentration of dissolved oxygen and the load of organic pollutants by adjusting the aeration amount, so that the synchronous nitrification and denitrification process of an aerobic section is maintained, and the biological denitrification efficiency of the system is improved. The effluent of the first aerobic zone 005 passes through the second variable mode adjusting zone 006 and then enters the second anoxic zone 007, and the endogenous denitrification state with a very low speed is changed by appropriately supplementing a carbon source, so that the denitrification efficiency is greatly improved, and nitrate-free effluent is obtained. When the mixed liquid flows back, the second variable mode adjustment zone 006 is switched to the anoxic zone mode, and after the oxygen is eliminated, the mixed liquid flows back to the first anoxic zone 003. The water discharged from the second anoxic zone 007 enters the second aerobic zone 008 to remove ammonia nitrogen introduced from the post-positioned anoxic section. And the effluent of the second aerobic zone 008 enters a settling zone 009 for solid-liquid separation, and the sludge is refluxed to the pre-anoxic zone 001 to maintain the concentration of the sludge in the reaction device.
The utility model avoids the influence of nitrate in the returned sludge on the phosphorus release of the sludge by arranging the pre-anoxic zone; the second variable mode adjusting area is arranged and can be used for reducing the DO value of the effluent of the first aerobic area, avoiding the over-high DO value of the backflow mixed liquid from influencing the anoxic environment of the first anoxic area and stabilizing the denitrification capability of the system. And water is arranged in the pre-anoxic zone, the anaerobic zone and the first anoxic zone, so that the maximum utilization of the carbon source is realized. And the pollutant load is leveled by multi-point water inflow, so that the shock resistance of the system is improved. The sludge sedimentation is high, the sludge is repeatedly subjected to alternate anoxic and aerobic processes, the probability of sludge bulking is well inhibited, the efficiency of the sedimentation tank is improved, and the sludge reflux ratio can be reduced to 50%, so that the operation cost is reduced. The setting in variable mode regulatory region for the HRT adjustment in aerobic zone or anoxic zone is nimble, and whole device has impact load resistant's ability, guarantees that the stable standard reaching of water nitrogen phosphorus.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (10)
1. The utility model provides an adjustable nitrogen and phosphorus removal device based on AAAOAO which characterized in that: the anaerobic reactor comprises a pre-anoxic zone, an anaerobic zone, a first anoxic zone, a first variable mode adjusting zone, a first aerobic zone, a second variable mode adjusting zone, a second anoxic zone, a second aerobic zone and a precipitation zone which are communicated in sequence;
the first variable mode adjusting area is provided with a first aeration device and a first stirring device; the height of the stirring part of the first stirring device is lower than that of the water outlet of the first variable mode adjusting area; the first aeration device is detachably arranged on the bottom or the side wall of the container of the first variable mode adjusting area;
the second variable mode adjusting area is provided with a second aeration device and a second stirring device; the height of the stirring part of the second stirring device is lower than the height of the water outlet of the second variable mode adjusting area; the second aeration device is detachably arranged on the bottom of the container or the side wall of the container of the second variable mode adjusting area.
2. The AAAOAO-based adjustable phosphorus and nitrogen removal device of claim 1, wherein: the container wall on one side of the first variable mode adjusting area is a horizontally movable partition plate; an aeration device is arranged on the clapboard; the first stirring device is arranged at the upper end of the clapboard through a telescopic arm capable of adjusting horizontal displacement.
3. The AAAOAO-based adjustable phosphorus and nitrogen removal device of claim 2, wherein: the first variable mode adjusting area is arranged adjacent to the first aerobic area; the first variable mode adjustment zone and the first aerobic zone share a common vessel wall; a through hole is formed in the common container wall; the first variable mode adjusting area is communicated with the first aerobic area through the through hole; the common vessel wall is the baffle.
4. The AAAOAO-based adjustable phosphorus and nitrogen removal device of claim 1, wherein: the system also comprises a water inlet well, a plurality of water inlet pumps, a water inlet distribution channel and a plurality of flow regulators;
the water inlet well is communicated with the pre-anoxic zone, the anaerobic zone and the first anoxic zone in parallel through the water inlet distribution channel; the pipelines of the water inlet distribution channel, which are respectively communicated with the pre-anoxic zone, the anaerobic zone and the first anoxic zone, are water inlet distribution channel branches; each water inlet distribution channel branch is provided with one water inlet pump and one flow regulator.
5. The AAAOAO-based adjustable phosphorus and nitrogen removal device of claim 1 or 4, wherein: and the first anoxic zone and the second anoxic zone are both provided with carbon source adding devices.
6. The AAAOAO-based adjustable phosphorus and nitrogen removal device of claim 1, wherein: the device also comprises a mixed liquid return channel and a mixed liquid return pump; the mixed liquor return channel sequentially communicates the second variable mode regulation zone, the mixed liquor return pump and the first anoxic zone.
7. The AAAOAO-based adjustable phosphorus and nitrogen removal device of claim 1 or 6, wherein: the sludge reflux channel and the sludge reflux pump are also included; the sludge return channel is used for sequentially communicating the settling zone, the sludge return pump and the pre-anoxic zone.
8. The AAAOAO-based adjustable phosphorus and nitrogen removal device of claim 1, wherein: the first variable mode adjustment zone, the first aerobic zone, the second variable mode adjustment zone and the second aerobic zone are all provided with aeration devices.
9. The AAAOAO-based adjustable phosphorus and nitrogen removal device of claim 8, wherein: the device also comprises a blower and a gas transmission pipeline; the air blower is respectively communicated with the first aeration device, the aeration device of the first aerobic zone, the second aeration device and the aeration device of the second aerobic zone through the air transmission pipeline.
10. The AAAOAO-based adjustable phosphorus and nitrogen removal device of claim 1 or 2, wherein: the first stirring device and the second stirring device are both lifting type underwater stirring devices.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170456A (en) * | 2020-01-20 | 2020-05-19 | 青岛思普润水处理股份有限公司 | MBBR-based non-nitrous-accumulation CANON system and operation method |
| CN113045117A (en) * | 2021-03-16 | 2021-06-29 | 湖南艾布鲁环保科技股份有限公司 | Intelligent integrated sewage treatment equipment and sewage treatment method |
| CN113087299A (en) * | 2021-04-08 | 2021-07-09 | 中建三局绿色产业投资有限公司 | A for sewage treatment2O denitrification and dephosphorization device and method |
| CN113461264A (en) * | 2021-07-08 | 2021-10-01 | 中持水务股份有限公司 | Coupled biological regulation and control denitrification system and use method thereof |
| CN114560599A (en) * | 2022-03-17 | 2022-05-31 | 北京首创生态环保集团股份有限公司 | Shunt-system urban sewage plant and operation control method thereof |
| CN114644400A (en) * | 2022-04-25 | 2022-06-21 | 北控水务(中国)投资有限公司 | Integrated sewage treatment device |
| CN115818837A (en) * | 2023-01-06 | 2023-03-21 | 天润(山东)生态环境科技有限公司 | Biochemical treatment system of sewage |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170456A (en) * | 2020-01-20 | 2020-05-19 | 青岛思普润水处理股份有限公司 | MBBR-based non-nitrous-accumulation CANON system and operation method |
| CN111170456B (en) * | 2020-01-20 | 2023-11-24 | 青岛思普润水处理股份有限公司 | CANON system without nitrous accumulation based on MBBR and operation method |
| CN113045117A (en) * | 2021-03-16 | 2021-06-29 | 湖南艾布鲁环保科技股份有限公司 | Intelligent integrated sewage treatment equipment and sewage treatment method |
| CN113087299A (en) * | 2021-04-08 | 2021-07-09 | 中建三局绿色产业投资有限公司 | A for sewage treatment2O denitrification and dephosphorization device and method |
| CN113087299B (en) * | 2021-04-08 | 2022-08-02 | 中建三局绿色产业投资有限公司 | A for sewage treatment 2 O denitrification and dephosphorization device and method |
| CN113461264A (en) * | 2021-07-08 | 2021-10-01 | 中持水务股份有限公司 | Coupled biological regulation and control denitrification system and use method thereof |
| CN114560599A (en) * | 2022-03-17 | 2022-05-31 | 北京首创生态环保集团股份有限公司 | Shunt-system urban sewage plant and operation control method thereof |
| CN114560599B (en) * | 2022-03-17 | 2023-09-26 | 北京首创生态环保集团股份有限公司 | Flow-dividing urban sewage plant and operation control method thereof |
| CN114644400A (en) * | 2022-04-25 | 2022-06-21 | 北控水务(中国)投资有限公司 | Integrated sewage treatment device |
| CN115818837A (en) * | 2023-01-06 | 2023-03-21 | 天润(山东)生态环境科技有限公司 | Biochemical treatment system of sewage |
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