CN213012196U - High-density membrane bioreactor - Google Patents
High-density membrane bioreactor Download PDFInfo
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- CN213012196U CN213012196U CN202021115981.1U CN202021115981U CN213012196U CN 213012196 U CN213012196 U CN 213012196U CN 202021115981 U CN202021115981 U CN 202021115981U CN 213012196 U CN213012196 U CN 213012196U
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Abstract
The utility model discloses a high-density membrane bioreactor, which comprises an anoxic zone, an aerobic zone and a deoxidation zone arranged at the center of the anoxic zone, wherein the deoxidation zone is fixed in the anoxic zone through a bracket; the aerobic zone is internally provided with a membrane component, the deoxidizing zone is internally provided with a guide plate, water in the aerobic zone enters the deoxidizing zone through a gas stripping pipe in a tangential direction, a water inlet of the gas stripping pipe extends into an aeration pipe, the aeration pipe is connected with an external aeration device, and the outer diameter of the aeration pipe is smaller than the inner diameter of the gas stripping pipe. The membrane bioreactor of the utility model does not need to adopt a submersible pump or a centrifugal pump to lead the water in the aerobic tank to flow back to the anoxic tank, thereby effectively reducing the failure rate of the system; in addition, set up the deoxidation district in the anoxic zone, through forming revolve whirl in the deoxidation district, not only need not use mechanical stirring, reduce the energy consumption, but also can make microorganism and water fully contact to dissolved oxygen in the liquid that can also greatly reduced returns.
Description
Technical Field
The utility model relates to a high-density membrane bioreactor, belonging to the technical field of water treatment.
Background
As a high-efficiency and practical sewage treatment device, the membrane bioreactor is widely applied to municipal sewage and various organic industrial wastewater treatment. The advantages of the traditional biological treatment technology and the membrane separation technology are combined, the effective interception of the ultrafiltration membrane on microorganisms is fully utilized, the impact caused by organic load and temperature difference change can be effectively resisted, and the long-term reliable and stable operation of the system is ensured.
The traditional biological denitrification process usually adopts a submersible pump or a centrifugal pump to reflux, so that the system has high failure rate and is unstable; in addition, the dissolved oxygen in the reflux liquid is higher, so that the denitrification of an anoxic zone is insufficient; finally, the mechanical stirring causes insufficient contact between the microorganisms and the water body due to high stirring speed, so that the denitrification efficiency is low.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a high-density membrane bioreactor, which does not need a submersible pump or a centrifugal pump to return water in an aerobic pool to an anoxic pool, thereby effectively reducing the failure rate of the system; in addition, set up the deoxidation district in the anoxic zone, through forming revolve whirl in the deoxidation district, not only need not use mechanical stirring, reduce the energy consumption, but also can make microorganism and water fully contact to dissolved oxygen in the liquid that can also greatly reduced returns.
For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:
a high-density membrane bioreactor comprises an anoxic zone, an aerobic zone and a deoxidation zone arranged at the center of the anoxic zone, wherein the deoxidation zone is fixed in the anoxic zone through a bracket; be equipped with the membrane module in the good oxygen district, be equipped with the guide plate in the deoxidation district, the water in the good oxygen district passes through the air stripping pipe and gets into the deoxidation district along the guide plate tangential, and air stripping pipe water inlet department stretches into there is the aeration pipe, and the aeration pipe is connected with outside aeration equipment, and the external diameter of aeration pipe is less than the internal diameter of air stripping pipe.
Wherein the aeration pipe extends into the position 1-3 cm away from the water inlet of the air stripping pipe.
Wherein, the water in the regulating reservoir enters into a deoxidation zone through a lifting pipe connected with a lifting pump, the lifting pipe is arranged in a tangent way with the deoxidation zone, the water outlet in the lifting pipe enters into the deoxidation zone in a tangent way, and forms revolve rotational flow with the water outlet in the lifting pipe in the deoxidation zone; the mixed liquid naturally forms revolve rotational flow in the deoxidation zone, so that the separation of dissolved oxygen is accelerated, meanwhile, the water body forms natural stirring, the traditional stirring function of arranging a stirrer in the deoxidation zone is replaced, and the fluidized state of the activated sludge in the anoxic zone is realized.
Wherein, the membrane component comprises a membrane box, a flat membrane positioned in the membrane box and an aeration box positioned at the bottom of the membrane box; the flat membrane is respectively connected with a suction pipe at the upper part of the membrane box, and the suction pipe is connected with a water outlet self-sucking pump; the bottom of the aeration tank is provided with an aeration pipe which is connected with an air outlet pipe of the air blower.
Wherein, the water in the anoxic zone flows into the aerobic zone through the connecting pipe.
Has the advantages that: the membrane bioreactor of the utility model does not need to adopt a submersible pump or a centrifugal pump to lead the water in the aerobic tank to flow back to the anoxic tank, thereby effectively reducing the failure rate of the system; in addition, set up the deoxidation district in the anoxic zone, through forming revolve whirl in the deoxidation district, not only need not use mechanical stirring, reduce the energy consumption, but also can make microorganism and water fully contact to dissolved oxygen in the liquid that can also greatly reduced returns.
Drawings
FIG. 1 is a structural schematic diagram of the membrane bioreactor of the present invention;
FIG. 2 is a diagram showing the connection of the stripping tube and the aeration tube;
FIG. 3 is a diagram of the connection of the riser and the stripper to the deoxygenation zone.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-3, the high density membrane bioreactor of the present invention comprises an anoxic zone 1 and an aerobic zone 2, and further comprises a deoxidation zone 3 disposed at the center of the anoxic zone 1, wherein the deoxidation zone 3 is fixed in the anoxic zone 1 through a support 15, water in the regulating reservoir enters the deoxidation zone 3 through a lift pipe 11 connected with a lift pump (the deoxidation zone 3 is a cylindrical structure with an upper opening and a lower opening), the lift pipe 11 is arranged tangentially to the deoxidation zone 3, water in the lift pipe 11 enters the deoxidation zone 3 tangentially, and water in the anoxic zone 1 flows into the aerobic zone 2 through a connecting pipe 6; a membrane component 7 is arranged in the aerobic zone 2, a guide plate 16 is arranged in the deoxidizing zone 3, water in the aerobic zone 2 tangentially enters the deoxidizing zone 3 through an air stripping pipe 4 along the guide plate 16, an aeration pipe 5 extends into a water inlet of the air stripping pipe 4, the aeration pipe 5 is connected with an external aeration device 13 (a fan 13), the outer diameter of the aeration pipe 5 is smaller than the inner diameter of the air stripping pipe 4, and the aeration pipe 5 extends into a position 1-3 cm away from the water inlet of the air stripping pipe 4; the membrane bioreactor of the utility model realizes the water reflux of the aerobic zone 2 to the anoxic zone 1 through the air stripping pipe 4 without using a submersible pump or a centrifugal pump. The water body which flows back from the aerobic zone 2 and is full of airflow is quickly deoxidized in the deoxidizing zone 3 and then enters the anoxic zone 1; the water in the anoxic zone 1 enters from the deoxidation zone 3, so that the water in the anoxic zone 1 forms a fluidized state, and microorganisms in the water are promoted to be in a suspended state, so that the microorganisms are more fully contacted with the water, the denitrification efficiency is higher, and the total nitrogen removal rate is higher.
Wherein, the membrane component 7 comprises a membrane box, a flat membrane positioned in the membrane box and an aeration box 17 positioned at the bottom of the membrane box; the flat membrane is respectively connected with a suction pipe 9 at the upper part of the membrane box, the suction pipe 9 is connected with a water outlet self-sucking pump 10, and the water outlet self-sucking pump 10 is arranged in an equipment room 14; and an aeration pipe I is arranged at the bottom of the aeration box 17 and is connected with an air outlet pipe 8 of the air blower 12.
The water in the regulating reservoir enters the deoxygenation zone 3 through a lifting pipe 11 connected with a lifting pump, the lifting pipe 11 is arranged in a tangent way with the deoxygenation zone 3, the water outlet in the lifting pipe 11 tangentially enters the deoxygenation zone 3, and forms a swirling flow state with the water outlet in the gas lifting pipe 4 in the deoxygenation zone 3. The effluent of the lifting pipe 11 is guided by the inner wall of the deoxidation zone 3 to form rotational flow in the deoxidation tank, and the effluent of the lifting pipe 4 is added to accelerate the rotation of the water body, so that the dissolved oxygen in the water body is consumed. The mixed liquid naturally forms revolve rotational flow in the deoxidation zone 3, so that the removal of dissolved oxygen is accelerated, meanwhile, the water body forms natural stirring, the traditional stirring function of a stirrer arranged in the deoxidation zone 3 is replaced, and the fluidized state of the activated sludge in the anoxic zone 1 is realized.
The high-density membrane bioreactor adopts air stripping backflow and tank type structure to realize high-efficiency denitrification. In order to prevent the oxygen deficiency environment from being influenced by overhigh dissolved oxygen, a deoxidation space is arranged in the tank type oxygen deficiency area 1, the dissolved oxygen in the oxygen deficiency denitrification environment is ensured to be less than 0.5mg/L, high-efficiency denitrification is realized, in order to fully utilize the kinetic energy of gas-liquid mixed flow, the gas stripping tangential flow mode is adopted to convert the gas-liquid mixed flow kinetic energy into the kinetic energy of the water body in the oxygen deficiency area, the mixed liquid stirring in the oxygen deficiency area is realized, the traditional stirrer is replaced, and the effects of energy conservation and consumption reduction are. The high-density membrane bioreactor realizes hydraulic stirring by utilizing the gas stripping reflux gas-liquid mixing kinetic energy; the backflow liquid (the backflow liquid contains sludge) forms rotational flow in the deoxidation zone 3, which is beneficial to the full contact of sewage and microorganisms and ensures the denitrification effect; and a gas stripping reflux mode is adopted, and a reflux power device is not required to be arranged in the aerobic zone 2, so that the problems of the reflux and the maintenance of the stirring device are solved.
Claims (5)
1. A high-density membrane bioreactor is characterized in that: the device comprises an anoxic zone, an aerobic zone and a deoxidation zone arranged in the center of the anoxic zone, wherein the deoxidation zone is fixed in the anoxic zone through a bracket; the aerobic zone is internally provided with a membrane component, the deoxidizing zone is internally provided with a guide plate, water in the aerobic zone enters the deoxidizing zone through a gas stripping pipe in a tangential direction, a water inlet of the gas stripping pipe extends into an aeration pipe, the aeration pipe is connected with an external aeration device, and the outer diameter of the aeration pipe is smaller than the inner diameter of the gas stripping pipe.
2. The high density membrane bioreactor of claim 1, wherein: the aeration pipe extends into the position 1-3 cm away from the water inlet of the air stripping pipe.
3. The high density membrane bioreactor of claim 1, wherein: the water in the regulating reservoir enters the deoxygenation zone through a lifting pipe connected with a lifting pump, the lifting pipe and the deoxygenation zone are arranged in a tangent mode, the water outlet in the lifting pipe enters the deoxygenation zone in a tangent mode, and revolve rotational flow is formed in the deoxygenation zone together with the water outlet in the gas lifting pipe.
4. The high density membrane bioreactor of claim 1, wherein: the membrane component comprises a membrane box, a flat membrane positioned in the membrane box and an aeration box positioned at the bottom of the membrane box; the flat membrane is respectively connected with a suction pipe at the upper part of the membrane box, and the suction pipe is connected with a water outlet self-sucking pump; the bottom of the aeration tank is provided with an aeration pipe which is connected with an air outlet pipe of the air blower.
5. The high density membrane bioreactor of claim 1, wherein: the water in the anoxic zone flows into the aerobic zone through the connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021115981.1U CN213012196U (en) | 2020-06-16 | 2020-06-16 | High-density membrane bioreactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021115981.1U CN213012196U (en) | 2020-06-16 | 2020-06-16 | High-density membrane bioreactor |
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| Publication Number | Publication Date |
|---|---|
| CN213012196U true CN213012196U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021115981.1U Active CN213012196U (en) | 2020-06-16 | 2020-06-16 | High-density membrane bioreactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213012196U (en) |
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2020
- 2020-06-16 CN CN202021115981.1U patent/CN213012196U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A high density membrane bioreactor Effective date of registration: 20210825 Granted publication date: 20210420 Pledgee: Bank of Jiangsu Limited by Share Ltd. Taishan Nanjing road subbranch Pledgor: NANJING RGE MEMBRANE TECH Co.,Ltd. Registration number: Y2021980008262 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220331 Granted publication date: 20210420 Pledgee: Bank of Jiangsu Limited by Share Ltd. Taishan Nanjing road subbranch Pledgor: NANJING RGE MEMBRANE TECH CO.,LTD. Registration number: Y2021980008262 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |