CN108996690B - Biological reaction system based on flexible suspended filler and operation control method - Google Patents
Biological reaction system based on flexible suspended filler and operation control method Download PDFInfo
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- CN108996690B CN108996690B CN201811129478.9A CN201811129478A CN108996690B CN 108996690 B CN108996690 B CN 108996690B CN 201811129478 A CN201811129478 A CN 201811129478A CN 108996690 B CN108996690 B CN 108996690B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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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- Biological Treatment Of Waste Water (AREA)
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Abstract
A bioreactor comprises a pool A and a pool O which are separated by a partition wall, a water inlet and a water outlet are arranged, the pool O is filled with flexible suspended filler, and a water retaining wall and a screen are sequentially arranged; swirl aerators are uniformly distributed in the partial area of the bottom of the O tank; the screen is provided with a flushing pipe and a stripping device; the gas stripping device is provided with a feed inlet, a gas pipe filler return pipe, a nitrifying liquid return pipe and a liquid-liquid separator. The feed liquid separator is equipped with a bell mouth, a funnel and a grid plate. The cyclone aerators are uniformly distributed at the bottom of the O tank, the aeration quantity of each group of cyclone aerators is controlled by a flow linkage control valve, flexible suspended filler and mixed liquid are refluxed by the gas stripping device, so that the internal circulation of nitrified liquid is realized, and the filler and the mixed liquid are separated by the liquid separating device and respectively enter the A tank and the O tank. The system utilizes the flexible suspended filler to improve the nitrification efficiency and the oxygen utilization rate, and can achieve the purposes of improving the treatment capacity, reducing the energy consumption and reducing the sludge.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, relates to a biological reaction tank, and in particular relates to a biological reaction system based on flexible suspended filler and an operation control method.
Background
A 2 the/O method is widely applied to domestic sewage treatment engineering. The aerobic process section usually adopts a mode of adding biological carriers by adopting fixed fillers or suspended fillers to increase the microbial retention of an aerobic tank, and in recent years, the suspended filler process is more preferred. The aeration system usually adopts an aeration disc to oxygenate and aerate the water body. However, the combination mode of the suspended filler and the aeration disc by engineering experience has the defects of difficult film formation, difficult maintenance, short service life, easy blockage and the like.
Recently, a flexible suspended filler made of PPC material is adopted as an aerobic biological carrier in a certain domestic sewage treatment project. The PPC aerobic biological carrier, also called as polyurethane porous gel carrier, is formed by compounding polyurethane and other high polymer materials, and compared with common polyurethane filler, the synthesized PPC biological carrier is obviously different, has a unique wall structure, increases the specific surface area of the carrier, enhances the wear resistance of the carrier and has longer service life. The PPC carrier has hydrophilic gel, good elasticity and easy adhesion of microorganisms to a film, and meanwhile, the higher porosity ensures smooth mass transfer inside and outside the carrier and excellent microorganism growth environment.
Disclosure of Invention
In order to overcome the defects of difficult film formation, difficult maintenance, short service life, easy blockage and the like caused by the existing combination mode of the suspended filler and the aeration disc, the invention aims to provide a biological reaction system and an operation control method based on the flexible suspended filler, wherein the flexible suspended filler made of PPC material is used as an aerobic biological carrier, and a cyclone aerator is adopted as an aeration releaser. Through practical application, A of the combination is found 2 The method of O is compared with the conventional method A 2 the/O can have better treatment effect, and simultaneously has the effects of reducing the operation energy consumption and reducing the sludge production.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a biological reaction system based on flexible suspended filler comprises a biological reaction tank consisting of a tank A and a tank O, wherein the tank A is arranged in front, the tank O is arranged behind and is separated by a partition wall, the front end of the tank A is provided with a water inlet, a cyclone aerator is distributed at the bottom of the tank O, the tail end of the tank O is provided with a water retaining wall, the bottom of the tank O is communicated with the water retaining wall to enable a flexible suspended filler and mud water mixture to enter a separation area at the tail end of the tank O from below, a screen is arranged behind the water retaining wall, a flushing pipe is arranged below the screen, a tank O water outlet is arranged behind the screen, a stripping device is arranged at the bottom of the tank O behind the screen, a feed inlet, a filler return pipe, a feed liquid separation device and a nitrifying liquid return pipe are arranged in an auxiliary manner, the filler return pipe is connected with the stripping device and the feed liquid separation device and is arranged above the tank O, the flexible suspended filler separated by the feed liquid separation device returns to the tank O, and the separated mud water mixture flows back to the tank A from the nitrifying liquid return pipe; the O pool is filled with flexible suspension filler;
the partition wall is of a reinforced concrete structure and is used for distinguishing a pool A from a pool O;
the air stripping device is steel structure nonstandard equipment, the lower end of the air stripping device is connected with the feed inlet, the upper end of the air stripping device is connected with the filler return pipe, the air inlet of the air pipe is connected with the outlet of the fan, the air outlet of the air pipe extends into the filler return pipe, and the connecting part is fully sealed; the air stripping device is used for refluxing the flexible suspension filler and the mixed liquid so as to ensure the holding quantity of the flexible suspension filler, and simultaneously, the internal circulation of the nitrifying liquid is realized, and the denitrification purpose is realized.
The material liquid separation device is steel structure nonstandard equipment, the tail end of the filler return pipe is connected with a horn mouth, a funnel is arranged below the horn mouth, the funnel is inserted into the nitrifying liquid return pipe, a grid plate is arranged on the contact surface of the funnel and the horn mouth, and an inclined surface is formed by the grid plate and the horn mouth; the material liquid separation device is assisted to be provided with a flexible suspended filler extrusion system, inorganic sludge and old sludge in the flexible suspended filler are removed through extrusion, and the inorganic sludge and the old sludge enter a subsequent precipitation system to be removed.
The screen is trapezoid and is used for intercepting the flexible suspended filler and preventing the flexible suspended filler from entering the rear end system along with the effluent.
The water retaining wall forms an angle of 105 degrees with the water flow direction.
The cyclone aerators are divided into a plurality of groups, and the air inlet pipeline of each group of cyclone aerators is controlled by an independent electric valve.
The flexible suspension filler is made of PPC material, the addition ratio of the flexible suspension filler is 10-50%, and the flexible suspension filler is used as an activated sludge carrier.
An operation control method of a biological reaction system based on flexible suspended filler comprises the following steps:
1) The cyclone aerators are uniformly distributed at the bottom of the O tank, the total valves are arranged in a partition mode, and the aeration quantity of each group of cyclone aerators is controlled in a mode of controlling the valves in a flow linkage mode;
2) According to the dissolved oxygen level of the O pool, the combination adopts time-sharing intermittent aeration and continuous aeration; the time-sharing intermittent aeration is to perform grouped aeration in a certain time period, and the continuous aeration is to perform continuous aeration of all the aerators;
the aeration modes all need to synchronously use electric valves to control the aeration quantity of each region, ensure the integral dissolved oxygen concentration of the O pool, and realize the uniform distribution of flexible suspended filler through the control of the aeration quantity;
3) The air stripping device is matched with the screen, the water retaining wall, the flushing pipe and the feed liquid separating device to separate the flexible suspended filler from the nitrified liquid, and meanwhile, the screen is prevented from being blocked. The gas stripping device intermittently or continuously operates, and the air pipe electric valve controls the air quantity, so that the reflux quantity of the gas stripping device is controlled, and the nitrified liquid reflux pipe is provided with a flowmeter, so that the nitrified liquid reflux quantity is ensured to be between 100 and 400 percent;
4) The material liquid separating device is arranged at the tail end of the filler return pipe and is used for separating the flexible suspended filler and the mixed liquid, and has the extrusion function of the flexible suspended filler, so that the old sludge stripping of the flexible suspended filler is realized.
The invention has the advantages that:
1) The method is characterized in that the flexible suspension filler is adopted as a sludge carrier, and equipment such as a cyclone aerator, a screen mesh, a gas stripping device and the like is assisted. The complete biological treatment process system with internal reflux is formed, and the arrangement characteristics of equipment are utilized to ensure that the process has better removal efficiency than the common process, and also has the effects of reducing the running cost and reducing the sludge production.
2) The flexible suspension filler adopted in the method has larger specific surface area. Compared with PE or other fillers, the flexible suspended filler has unique internal wall structure and characteristics, can bear more biomass, can fully and uniformly suspend the flexible suspended filler in sewage on the basis of ensuring reasonable operation control, ensures full contact with sewage in a pool, and improves oxygen utilization efficiency. The flexible suspension filler has a longer service life and lower operating energy consumption than the PE filler.
3) The method adopts the gas stripping device to reflux the filler and the mixed liquid, and the mixed liquid at the rear end is refluxed to the tank A, compared with the reflux mode of a common mixed liquid reflux pump, the reflux mode of the gas stripping device only needs a small amount of gas, and does not need other energy sources. Meanwhile, the air stripping device can form a kneading effect on the flexible suspended filler in the process of sucking and spitting the flexible suspended filler, timely discharge aged sludge in the flexible suspended filler, and is favorable for updating microorganisms in the flexible suspended filler and keeping a good sludge activity ratio. Compared with a mixed liquid reflux pump, the air stripping device can save a large amount of energy sources, and simultaneously ensure the microbial activity in the aerobic tank.
4) The method is characterized in that a screen is arranged at the tail end of the O pool and is used for preventing flexible suspended filler from entering a rear end system. And a flushing pipe is arranged at the lower part of the screen closely. The flushing gas generated by the flushing pipe continuously flushes the screen, and a surface air film is formed on the screen, so that the screen pore canal blockage caused by flexible suspended filler or biological adsorption and the like can be effectively avoided.
5) The method is characterized in that a water retaining wall is arranged in front of a screen. The water retaining wall forms an included angle of 105 degrees with the horizontal line, so that the common water flow state is changed. Compared with uncontrolled water flow state, the artificial control method for water flow state of water, filler and sludge is matched with the air stripping device, so that the flexible suspended filler and the local accumulation of activated sludge can be effectively avoided.
6) The method solves the defects of fragile and slow film formation of the conventional suspension filler.
7) The method solves the defect that the filter screen is easy to be blocked.
8) The method greatly reduces the operation energy consumption and the electricity consumption by about 10-20%.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic structural view of the present invention.
FIG. 3 is a partial schematic view of a stripping apparatus of the present invention.
FIG. 4 is a partial schematic view of the feed liquid separating apparatus of the present invention.
Fig. 5 is a diagram of examples before and after the flexible suspension filler is put in the embodiment.
FIG. 6 is a graph comparing the state of aeration of a flexible suspended filler with other carriers.
FIG. 7 is a block diagram of the internal wall of the flexible suspended filler.
Wherein, 1 is a biochemical reaction tank, 2 is a partition wall; 3 is a pool A, 4 is a pool O; 5 is a rotational flow aerator; 6 is a water retaining wall; 7 is a screen; 8 is a water outlet; 9 is a stripping device; 10 is a filler return tube; 11 is a feed liquid separation device; 12 is a nitrifying liquid return pipe; 13 is a feed inlet; 14 is a horn mouth; 15 is a funnel; 16 is a grid plate; 17 is a water inlet; 18 is a flushing pipe; 19 is a filler; 20 is the trachea.
Detailed Description
The technical scheme of the invention is further described below with reference to specific examples.
As shown in fig. 1 and 2, a biological reaction system based on flexible suspended filler comprises a biological reaction tank 1, wherein the biological reaction tank 1 consists of an A tank 3 and an O tank 4, the A tank 3 is in front, the O tank 4 is behind and is separated by a partition wall 2, a water inlet 17 is arranged at the front end of the A tank 3, a rotational flow aerator 5,O is distributed at the bottom of the O tank 4, a water retaining wall 6 is distributed at the tail end of the O tank 4, the bottom is communicated, the flexible suspended filler 19 and a mud water mixture enter into a separation area at the tail end of the O tank 4 from the lower part of the water retaining wall 6, a screen 7 is arranged behind the water retaining wall 6, a flushing pipe 18 is arranged under the screen 7, a water outlet 8 of the O tank 4 is arranged behind the screen 7, a gas stripping device 9 is arranged at the bottom of the O tank 4 behind the screen 7, a feed inlet 13, a filler return pipe 10, a feed liquid separation device 11 and a nitrifying liquid return pipe 12 are in auxiliary arrangement of the gas stripping device 9 and the feed liquid separation device 11, the flexible suspended filler 19 separated by the feed liquid separation device 11 is returned into the O tank 4 above the O tank 4, and the separated mud water mixture is returned to the A tank 3 by the nitrifying liquid return pipe 12; the O pool is filled with flexible suspension filler 19;
the partition wall (2) is of a reinforced concrete structure and is used for distinguishing an A pool 3 from an O pool 4;
as shown in fig. 3, the air stripping device 9 is a steel structure nonstandard device, the lower end of the air stripping device is connected with the feed inlet 13, the upper end of the air stripping device is connected with the filler return pipe 10, the air inlet of the air pipe 20 is connected with the outlet of the fan, the air outlet of the air pipe 20 extends into the filler return pipe 10, and the connecting part is fully sealed; the air stripping device 9 is used for reflowing the flexible suspension filler 19 and the mixed liquid so as to ensure the holding quantity of the flexible suspension filler 19, and simultaneously, the internal circulation of the nitrifying liquid is realized, and the denitrification purpose is realized.
As shown in fig. 4, the liquid-liquid separation device 11 is a steel structure nonstandard device, the tail end of the filler return pipe 10 is connected with a horn mouth 14, a funnel 15 is arranged below the horn mouth 14, the funnel 15 is inserted into the nitrifying liquid return pipe 12, a grid plate 16 is arranged on the contact surface of the funnel 15 and the horn mouth 14, and the grid plate 16 and the horn mouth 14 form an inclined surface; the material-liquid separation device 11 is assisted to be provided with a flexible suspended filler 19 extrusion system, inorganic sludge and old sludge in the flexible suspended filler 19 are removed by extrusion, and the inorganic sludge and the old sludge enter a subsequent precipitation system to be removed.
The screen 7 is trapezoid and is used for intercepting the flexible suspended filler 19 and preventing the flexible suspended filler 19 from entering the rear end system along with the effluent.
The water retaining wall 6 forms an angle of 105 degrees with the water flow direction.
The cyclone aerators 5 are divided into a plurality of groups, and the air inlet pipelines of the cyclone aerators 5 in each group are controlled by independent electric valves.
The flexible suspension filler 19 is made of PPC material, the addition ratio of the flexible suspension filler 19 is 10-50%, and the flexible suspension filler 19 is used as an activated sludge carrier.
An operation control method of a biological reaction system based on flexible suspended filler comprises the following steps:
1) The cyclone aerators 5 are uniformly distributed at the bottom of the O pool 4, the total valves are arranged in the subareas, and the aeration quantity of each group of cyclone aerators 5 is controlled in a mode of flow linkage control valves;
2) According to the dissolved oxygen level of the O pool 4, the combination adopts time-sharing intermittent aeration and continuous aeration; the time-sharing intermittent aeration is to perform grouped aeration in a certain time period, and the continuous aeration is to perform continuous aeration of all the aerators;
the aeration modes all need to synchronously use electric valves to control the aeration quantity of each region, ensure the integral dissolved oxygen concentration of the O pool 4 and realize the uniform distribution of the flexible suspended filler 19 through the control of the aeration quantity;
3) The air stripping device 9 is matched with the screen 7, the water retaining wall 6, the flushing pipe 18 and the feed liquid separating device 11 to separate the flexible suspended filler 19 from the nitrified liquid, and meanwhile, the screen 7 is prevented from being blocked. The air stripping device 9 runs intermittently or continuously, the air pipe 20 controls the air quantity by an electric valve, so that the reflux quantity of the air stripping device 9 is controlled, and the nitrifying liquid reflux pipe 12 is provided with a flowmeter, so that the nitrifying liquid reflux quantity is ensured to be 100-400%;
4) The feed liquid separation device 11 is arranged at the tail end of the filler return pipe 10 and is used for separating the flexible suspended filler 19 and the mixed liquid, and has the extrusion function of the flexible suspended filler 19, so as to realize the old sludge demoulding of the flexible suspended filler 19.
The air stripping device is used for refluxing the flexible suspended filler and the mixed liquid so as to ensure the retention amount of the flexible suspended filler, meanwhile, the internal circulation of the nitrifying liquid is realized, the denitrification purpose is realized, the filler and the mixed liquid are separated by the liquid separating device 11 and respectively enter the tank A3 and the tank O4, meanwhile, the flexible suspended filler extrusion system is assisted to be equipped, and the inorganic sludge and the old sludge in the flexible suspended filler are removed by extrusion and enter the subsequent sedimentation system to be removed.
According to the invention, the flexible suspension filler 19 is added into the O pool, and the cyclone aerator, the gas stripping device, the separation device, the screen mesh and the water retaining wall are arranged in a matched manner, and the operation control mode is adopted, so that the biological reaction system has good treatment efficiency, the total investment cost is reduced, the residual sludge production is reduced, and the operation energy consumption is reduced.
As shown in FIG. 7, the filler adopted in the invention is a flexible suspended filler 19 made of PPC material, has a very large specific surface area, can be used as a biological carrier, and greatly increases biomass compared with the common suspended filler, thereby increasing the pollutant removal efficiency and reducing the residual sludge production.
According to the invention, the cyclone aerator and the feed liquid separation device are adopted, the flexible suspended filler is uniformly distributed in the O pool by controlling the operation mode of aeration, so that local accumulation is avoided, meanwhile, the flexible suspended filler is extruded, the demolding of old sludge in the flexible suspended filler can be promoted, the activity of microorganisms is maintained, and the service life of the flexible suspended filler is prolonged.
The invention adopts the gas stripping device to reflux the filler and the nitrifying liquid, ensures the retention rate of the filler, also realizes the reflux of the nitrifying liquid, realizes the aim of denitrification, and simultaneously reduces the operation energy consumption.
Example 1
The method is mainly an operation method of a biological reaction system, and can be applied to new construction and reconstruction engineering of municipal sewage treatment plants and industrial sewage treatment plants.
As shown in fig. 1, 2, 5, and 6, the present example employs a conventional A2/o+ filtration process, and the process of the present invention is employed for both the a-cell and the O-cell.
In the O pool, flexible suspended filler 19 made of PPC material is added, a cyclone aerator 5 is used for supplying oxygen, the cyclone aerator 5 is arranged in a partitioning way along the water flow direction, and the air quantity is set to be gradually increased gradually, wherein the increasing quantity is 5-15%. The end of the O pool is provided with a screen, a flushing pipe is arranged for stripping, a water retaining wall is arranged in front of the screen, and the water retaining wall forms an angle of 105 degrees with the water flow direction. And a gas stripping device is arranged behind the screen, and the flexible suspended filler and the nitrifying liquid are separated through a liquid-liquid separation device, wherein the flexible suspended filler flows back to the aerobic tank, and the nitrifying liquid flows back to the anoxic tank.
The residence time of the pool A is 4 hours, and the residence time of the pool O is 6 hours. The tank A adopts a conventional stirrer to stir, so that the sludge and water are fully mixed.
Water quality of inlet and outlet water
The designed water standard is the first grade A standard of Integrated wastewater discharge Standard (GB 18918-2002). The water inlet and outlet indexes are shown in Table 4, the water inlet and outlet indexes of the biochemical section are shown in Table 5, and the operation parameters are shown in Table 6:
TABLE 4 Table 4
TABLE 5
TABLE 6
Claims (6)
1. A biological reaction system based on flexible suspended filler comprises a biological reaction tank (1) and is composed of an A tank (3) and an O tank (4), and is characterized in that the A tank (3) is in front, the O tank (4) is behind and separated by a partition wall (2), a water inlet (17) is arranged at the front end of the A tank (3), vortex aerators (5) are distributed at the bottom of the O tank (4), a water retaining wall (6) is distributed at the tail end of the O tank (4), the bottoms are communicated, so that flexible suspended filler (19) and a mud-water mixture enter into a separation area at the tail end of the O tank (4) from the lower part of the water retaining wall (6), a screen (7) is arranged behind the water retaining wall (6), a flushing pipe (18) is arranged under the screen (7), an O tank (4) water outlet (8) is arranged behind the screen (7), a stripping device (9) is arranged at the bottom of the O tank (4), a feed inlet (13), a filler (10), a feed liquid separation device (11) and a feed liquid return pipe (12) are auxiliary to be equipped at the bottom of the screen (7), the filler nitrifies (10) to be connected with the stripping device (9) and the feed liquid (11) and the feed liquid (4) to flow into the separation area from the water tank (4) from the water retaining wall, the separated mud-water mixture is returned to the pool A (3) by a nitrifying liquid return pipe (12); the O pool is filled with flexible suspension filler (19);
the partition wall (2) is of a reinforced concrete structure and is used for distinguishing a pool A (3) from a pool O (4);
the air stripping device (9) is steel structure nonstandard equipment, the lower end of the air stripping device is connected with the feed inlet (13), the upper end of the air stripping device is connected with the filler return pipe (10), the air inlet of the air pipe (20) is connected with the outlet of the fan, the air outlet of the air pipe (20) extends into the filler return pipe (10), and the connecting part is fully sealed; the air stripping device (9) is used for reflowing the flexible suspension filler (19) and the mixed liquid so as to ensure the holding quantity of the flexible suspension filler (19), and meanwhile, the internal circulation of the nitrifying liquid is realized, and the denitrification purpose is realized;
the material-liquid separation device (11) is steel structure nonstandard equipment, the tail end of the filler return pipe (10) is connected with a horn mouth (14), a funnel (15) is arranged below the horn mouth (14), the funnel (15) is inserted into the nitrifying liquid return pipe (12), a grid plate (16) is arranged on the contact surface of the funnel (15) and the horn mouth (14), and the grid plate (16) and the horn mouth (14) form an inclined surface; the material-liquid separation device (11) is assisted with a flexible suspension filler (19) extrusion system, inorganic sludge and old sludge in the flexible suspension filler (19) are removed by extrusion, and the inorganic sludge and the old sludge enter a subsequent precipitation system to be removed.
2. The bioreactor system based on flexible suspended filler according to claim 1, wherein the screen (7) is trapezoidal and is used for intercepting the flexible suspended filler (19) and preventing the flexible suspended filler (19) from entering the back-end system along with the effluent.
3. A flexible suspended filler based bioreactor system as claimed in claim 1, characterized in that the water retaining wall (6) is at an angle of 105 ° to the direction of water flow.
4. The flexible suspended filler-based biological reaction system of claim 1, wherein the cyclone aerators (5) are divided into a plurality of groups, and the air inlet pipeline of each group of cyclone aerators (5) is controlled by an independent electric valve.
5. The biological reaction system based on the flexible suspended filler according to claim 1, wherein the flexible suspended filler (19) is made of PPC material, and the addition ratio of the flexible suspended filler (19) is 10-50% and is used as an activated sludge carrier.
6. A method of controlling the operation of a flexible suspended filler based biological reaction system according to claim 1, comprising the steps of:
1) The cyclone aerators (5) are uniformly distributed at the bottom of the O pool (4), and are provided with a main valve in a partition manner, and the aeration quantity of each group of cyclone aerators (5) is controlled in a flow linkage control valve manner;
2) According to the dissolved oxygen level of the O pool (4), time-sharing intermittent aeration and continuous aeration are adopted in combination; the time-sharing intermittent aeration is to perform grouped aeration in a certain time period, and the continuous aeration is to perform continuous aeration of all the aerators;
the aeration modes all need to synchronously use electric valves to control the aeration quantity of each region, ensure the integral dissolved oxygen concentration of the O pool (4), and realize the uniform distribution of the flexible suspended filler (19) through the control of the aeration quantity;
3) The air stripping device (9) is matched with the screen (7), the water retaining wall (6), the flushing pipe (18) and the feed liquid separating device (11) to realize the separation of the flexible suspended filler (19) and the nitrifying liquid, and meanwhile, the screen (7) is prevented from being blocked. The gas stripping device (9) intermittently or continuously operates, and an air pipe (20) is electrically operated to control the air quantity, so that the reflux quantity of the gas stripping device (9) is controlled, and a nitrifying liquid reflux pipe (12) is provided with a flowmeter, so that the nitrifying liquid reflux quantity is ensured to be 100-400%;
4) The material liquid separation device (11) is arranged at the tail end of the filler return pipe (10) and is used for separating the flexible suspended filler (19) from the mixed liquid, and has the extrusion effect of the flexible suspended filler (19) so as to realize the old sludge demoulding of the flexible suspended filler (19).
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| CN113636660B (en) * | 2021-08-03 | 2022-07-08 | 华南理工大学 | Corridor type aeration tank |
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| CN114524512A (en) * | 2022-01-19 | 2022-05-24 | 江苏裕隆环保有限公司 | MBBR technology suspended filler internal circulation system |
| CN116789260A (en) * | 2023-06-16 | 2023-09-22 | 亚太建设科技信息研究院有限公司 | System for improving suspended filler backflow and mesh blocking of MBBR (moving bed biofilm reactor) process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07275886A (en) * | 1994-04-12 | 1995-10-24 | Kubota Corp | Biological denitration apparatus |
| CN102659244A (en) * | 2012-05-22 | 2012-09-12 | 苏州科技学院 | Integrated internal circulation type denitrification and decarburization bio-membrane reactor and operating method thereof |
| CN103991960A (en) * | 2014-05-27 | 2014-08-20 | 青岛思普润水处理有限公司 | Biological membrane and activated sludge composite sewage treatment system |
| CN207175585U (en) * | 2017-09-13 | 2018-04-03 | 重庆淏园环保科技有限公司 | Compound biochemical reactor |
| KR20180043689A (en) * | 2016-10-20 | 2018-04-30 | 유덕환경(주) | Eco-friendly Sewage System By Contact Oxidation Method Using Plastic Material As Bio-film Filtration |
-
2018
- 2018-09-27 CN CN201811129478.9A patent/CN108996690B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07275886A (en) * | 1994-04-12 | 1995-10-24 | Kubota Corp | Biological denitration apparatus |
| CN102659244A (en) * | 2012-05-22 | 2012-09-12 | 苏州科技学院 | Integrated internal circulation type denitrification and decarburization bio-membrane reactor and operating method thereof |
| CN103991960A (en) * | 2014-05-27 | 2014-08-20 | 青岛思普润水处理有限公司 | Biological membrane and activated sludge composite sewage treatment system |
| KR20180043689A (en) * | 2016-10-20 | 2018-04-30 | 유덕환경(주) | Eco-friendly Sewage System By Contact Oxidation Method Using Plastic Material As Bio-film Filtration |
| CN207175585U (en) * | 2017-09-13 | 2018-04-03 | 重庆淏园环保科技有限公司 | Compound biochemical reactor |
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