CN109761354B - Novel oxidation ditch based on MABR-MBR allies oneself with uses - Google Patents
Novel oxidation ditch based on MABR-MBR allies oneself with uses Download PDFInfo
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- CN109761354B CN109761354B CN201910195297.4A CN201910195297A CN109761354B CN 109761354 B CN109761354 B CN 109761354B CN 201910195297 A CN201910195297 A CN 201910195297A CN 109761354 B CN109761354 B CN 109761354B
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- 230000003647 oxidation Effects 0.000 title claims abstract description 85
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 85
- UEKDBDAWIKHROY-UHFFFAOYSA-L bis(4-bromo-2,6-ditert-butylphenoxy)-methylalumane Chemical compound [Al+2]C.CC(C)(C)C1=CC(Br)=CC(C(C)(C)C)=C1[O-].CC(C)(C)C1=CC(Br)=CC(C(C)(C)C)=C1[O-] UEKDBDAWIKHROY-UHFFFAOYSA-L 0.000 claims abstract description 37
- 238000005516 engineering process Methods 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 238000005273 aeration Methods 0.000 claims description 33
- 239000010802 sludge Substances 0.000 claims description 22
- 238000000926 separation method Methods 0.000 claims description 21
- 230000000813 microbial effect Effects 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 23
- 229910052698 phosphorus Inorganic materials 0.000 description 23
- 239000011574 phosphorus Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 11
- 241000894006 Bacteria Species 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004540 process dynamic Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention relates to the technical field of sewage treatment, in particular to a novel oxidation ditch based on MABR-MBR combination, which solves the problems that the MABR technology in the prior art is singly used, the biological dephosphorization effect is poor, and the MBR technology has high energy consumption.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a novel oxidation ditch based on MABR-MBR combination.
Background
The oxidation ditch is a modification of the activated sludge process, and an aeration tank is in a closed ditch type, so that the water power flow state of the oxidation ditch is different from that of the traditional activated sludge process, the oxidation ditch is a circulation flow aeration ditch connected end to end, sewage is permeated into the circulation flow aeration ditch to be purified, the earliest oxidation ditch is not built by reinforced concrete, but is a soil ditch subjected to slope protection treatment, and the technology of intermittent water inlet and intermittent aeration is the earliest sewage treatment in a sequencing batch mode.
The Chinese patent of patent application number 201510320526.2 discloses an MABR and MBR combined sewage treatment device and a treatment method. The patent sequentially sets a pretreatment unit, an MABR unit and an MBR unit along the sewage flowing direction; the MABR unit and the MBR unit are completely separated, and activated sludge in a suspended state exists in the MBR unit. For the removal of total phosphorus, the denitrification phosphorus accumulating bacteria of the MABR unit and the aerobic phosphorus accumulating bacteria of the MBR unit are mainly relied on. However, the culture and enrichment of denitrifying phosphorus accumulating bacteria and aerobic phosphorus accumulating bacteria have higher requirements on operators, and the traditional biological phosphorus removal process is the simplest to apply in the current sewage treatment facilities: even if the conventional phosphorus accumulating bacteria perform anaerobic phosphorus release and aerobic excessive phosphorus absorption in an anaerobic-aerobic alternate operation system, the aim of removing total phosphorus is finally achieved by discharging residual sludge containing the phosphorus accumulating bacteria.
And when the MABR technology is used alone, synchronous nitrification and denitrification can be performed, but the biological dephosphorization effect is poor. In order to overcome the problem of membrane pollution in operation, the MBR technology needs to maintain higher aeration intensity, and increases the operation energy consumption; and the conventional bubbling aeration oxygen utilization rate adopted by the MBR is too low.
Therefore, a novel oxidation ditch based on MABR-MBR combination is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects that the MABR technology in the prior art is used independently, the biological phosphorus removal effect is poor, and the MBR technology has high energy consumption, and provides a novel oxidation ditch based on MABR-MBR combination.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the novel oxidation ditch based on MABR-MBR combination comprises an oxidation ditch body, an MBR zone and an MABR zone, wherein a wall body frame is arranged on the inner side of the oxidation ditch body, the inner wall of the oxidation ditch body is also connected with a partition wall body, and a space between the partition wall body and the wall body frame is the MBR zone;
three aeration membrane assemblies and three stirrers are arranged on one side, close to the wall body frame, of the oxidation ditch body, two aeration membrane assemblies and two stirrers are arranged on the other side, close to the wall body frame, of the oxidation ditch body, a separation membrane assembly is arranged on the inner side, close to the separation wall body, of the oxidation ditch body, and the outer side of the separation membrane assembly is connected with a water suction pump and a water outlet pipe through a water outlet pipe;
the oxidation ditch is characterized in that a water inlet hole is formed in one side of the oxidation ditch body, a water inlet pipe is fixedly arranged on the inner side of the water inlet hole, an injection hole is formed in the other side of the oxidation ditch body, and a sludge pipe is fixedly arranged on the inner side of the injection hole.
Preferably, the inside of oxidation ditch body is provided with five agitators, and the agitator is clockwise arrangement installation, and the agitator all is fixed connection with the output of motor, and the motor passes through the bracing piece setting is in the inside of oxidation ditch body.
Preferably, the oxidation ditch body is far away from one side of the water inlet pipe is provided with a mounting hole, a drain pipe is arranged in the mounting hole, and one end of the drain pipe is connected to the separation membrane assembly.
Preferably, the other end of the drain pipe is connected with the inlet end of the suction pump, and the outlet end of the suction pump is connected with a water outlet pipe.
Preferably, the oxidation ditch body is in a closed ditch shape, the inner side area of the oxidation ditch body is divided into an MBR area and an MABR area, and the MBR area and the MABR area are communicated with each other.
Preferably, the aeration membrane component is a membrane aeration bioreactor, and a microbial membrane is formed on the surface of a membrane material of the MABR, and the microbial membrane is respectively an aerobic layer, a facultative layer and an anaerobic layer from inside to outside.
Preferably, the separation membrane module is selected as a membrane bioreactor, and the membrane bioreactor is a combination of membrane separation technology and bioreactor.
The beneficial effects of the invention are as follows:
1. in the oxidation ditch, the activated sludge is subjected to complete anaerobic and aerobic processes, so that the sufficiency of sludge phosphorus absorption in the oxidation ditch is improved, and the total phosphorus removal effect is improved.
2. According to the invention, organic matters, ammonia nitrogen and total nitrogen in sewage in the oxidation ditch are removed in the MABR zone with higher oxygen utilization rate, and the MBR zone only provides an aerobic environment for the biological dephosphorization process, so that the energy consumption is lower.
3. According to the invention, most of pollutants in the oxidation ditch are removed by the microbial membrane in the MABR, wherein the activated sludge is mainly used for biological dephosphorization, so that the concentration of the activated sludge can be reduced compared with that of the conventional MBR, thereby reducing the aeration intensity of the MBR and reducing the operation cost.
Drawings
FIG. 1 is a schematic top view of a novel oxidation ditch based on MABR-MBR combination according to the present invention;
FIG. 2 is a schematic diagram of a front view of a novel oxidation ditch based on MABR-MBR combination according to the present invention;
FIG. 3 is a schematic diagram showing the structure of a novel oxidation ditch based on MABR-MBR combination according to the present invention.
In the figure: 1 oxidation ditch body, 2MBR district, 3 separation membrane module, 4 outlet pipe, 5 suction pump, 6 drain pipe, 7 partition wall body, 8 motor, 9 aeration membrane module, 10 inlet tube, 11MABR district, 12 agitator, 13 wall body frame, 14 mud pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Examples: referring to fig. 1-3, a novel oxidation ditch based on MABR-MBR combination comprises an oxidation ditch body 1, an MBR zone 2 and an MABR zone 11, wherein a wall frame 13 is arranged on the inner side of the oxidation ditch body 1, the inner wall of the oxidation ditch body 1 is also connected with a partition wall 7, a space between the partition wall 7 and the wall frame 13 is the MBR zone 2, the space between the partition wall 7 and the outer side of the wall frame 13 is the MABR zone 11 in the inner space of the oxidation ditch, the shape of the oxidation ditch body 1 is in a closed ditch shape, the inner side area of the oxidation ditch body 1 is divided into the MBR zone 2 and the MABR zone 11, the MBR zone 2 and the MABR zone 11 are communicated with each other, an aeration membrane component 9 is selected as a membrane aeration bioreactor, microbial membranes are formed on the surface of membrane materials of the MABR, the microbial membranes are an aerobic layer, a facultative layer and an anaerobic layer respectively from inside to outside, a separation membrane component 3 is selected as a membrane bioreactor, and the membrane bioreactor is a combination of a membrane separation technology and a bioreactor;
wherein, one side that oxidation ditch body 1 is close to wall body frame 13 is provided with three aeration membrane module 9 and three agitator 12, the opposite side that oxidation ditch body 1 is close to wall body frame 13 is provided with two aeration membrane module 9 and two agitators 12, and the inboard that oxidation ditch body 1 is close to partition wall body 7 is provided with separation membrane module 3, the outside of separation membrane module 3 is connected with suction pump and outlet pipe 4 through drain pipe 6, the mounting hole is seted up to one side that oxidation ditch body 1 kept away from inlet tube 10, and be provided with drain pipe 6 in the mounting hole, the one end of drain pipe 6 is connected on separation membrane module 3, the other end of drain pipe 6 is connected at the entrance point of suction pump 5, and the exit end of suction pump 5 is connected with outlet pipe 4, and be provided with five agitators 12 in the inboard of oxidation ditch body 1, and agitator 12 is clockwise range installation, motor 8 passes through the inside that the bracing piece sets up at oxidation ditch body 1, one side of oxidation ditch body 1 sets up inlet tube 10, and inlet tube 10 is fixedly installed to the inside inlet tube, the inboard of oxidation ditch body 1 has been provided with the opposite side of the inboard of suction ditch 1, and sludge injection hole 14 is fixedly installed.
Preferably, the membrane aeration bioreactor MABR is a product of combining membrane technology and biological membrane technology, oxygen is supplied through a breathable membrane, and oxygen in a membrane lumen enters the outside of the lumen through micropores on the membrane wall under the condition that the partial pressure of gas is kept below a bubble point, so that the bubble-free aeration is realized, the mass transfer efficiency of the bubble-free aeration is high, and the oxygen utilization rate can be close to 100 percent and is 5 to 7 times that of the traditional aeration. The microbial membrane on the membrane component generates an obvious layered structure due to the anisotropic mass transfer of oxygen and the substrate, and the aerobic layer, the facultative layer and the anaerobic layer are respectively arranged from inside to outside, so that the microbial membrane in the MABR is functionally layered, and the microbial membrane can independently complete the oxidation and synchronous nitrification and denitrification reactions of organic pollutants in the sewage;
the Membrane Bioreactor (MBR) is a sewage treatment process formed by combining a membrane separation technology and a bioreactor, and replaces a secondary sedimentation tank of the traditional activated sludge process with a membrane separation device, so that solid-liquid separation can be efficiently carried out, and effluent with better water quality is obtained.
Specifically, the oxidation ditch is a continuous circulation reaction tank in a closed ditch shape, and due to a special structure, the oxidation ditch has two flow state characteristics of complete mixing and plug flow simultaneously, after sewage enters the oxidation ditch, the sewage can flow unidirectionally under the guiding action of the stirrer 12, but because the mixed liquid is required to complete multiple circulation in the oxidation ditch, and meanwhile, the sewage is quickly diluted by a large amount of mixed liquid in the gallery of the oxidation ditch due to the relatively high flow speed, the flow state and process dynamics characteristics in the oxidation ditch can be considered to be complete mixing, the device utilizes the unique flow state characteristics of the oxidation ditch, the MABR area 11 and the MBR area 2 are arranged in the same reaction tank, and the MBR area 2 and the MABR area 11 are separated by the partition wall body 7 and the wall body frame 13, so that activated sludge alternately flows circularly in the MABR area 11 and the MBR area 2, thereby improving the biological dephosphorization effect of the process and reducing the operation difficulty;
further, the MBR zone 21 is composed of a separation membrane assembly 3, a drain pipe 6, a suction pump 5 and a water outlet pipe 4, microporous aeration heads or aeration pipes are uniformly arranged at the bottom of a reaction tank body positioned in the MBR zone 2, the MBR zone 2 and the aeration membrane assembly 9 both adopt air sources, air is supplied to the air sources by a blower, sewage enters an oxidation ditch through a water inlet pipe 10, the water inlet pipe 10 is positioned above a tank wall in the MABR zone 11, and the sewage can enter the MABR zone 11 through a plurality of water inlet pipes 10, wherein one water inlet pipe 10 is positioned at one side of the water outlet pipe 4 of the MBR zone 2, so that dissolved oxygen in the water of the MBR zone 2 is consumed, the influence of the water inlet pipe on the anaerobic state in the MABR zone 11 is reduced, the denitrification and dephosphorization functions of the oxidation ditch are enhanced, the water distribution quantity of each water inlet pipe 10 can be distributed according to a certain proportion, the MBR zone 2 provides an aerobic environment for biological dephosphorization, therefore the sludge concentration required in the oxidation ditch is lower, the tank capacity of the MBR zone 2 can also be reduced, the aeration strength of the MBR zone 2 is reduced, and thus the energy consumption is reduced;
still further, there are aeration membrane assembly 9, agitator 12 and motor 8 that the control agitator 12 rotates in the MABR district 11, agitator 12 is used for making the mud keep the suspended state, and play a role in regulating the flow state of sewage, play a role in guiding the flow of sewage, because adopt the aeration membrane assembly 9 in the MABR district 11, can make oxygen totally consume in the microbial film on the surface of aeration membrane assembly 9 through controlling the internal pressure of membrane, therefore sewage in the MABR district 11 is anaerobic state, sewage and suspended activated sludge are in the oxidation ditch to finish many times of circulation, need to circulate and flow in the MABR district 11 in anaerobic state and MBR district 2 in aerobic state alternately, can carry on the biological phosphorus removal process, surplus mud is discharged by the mud pipe 14 (the mud pipe 14 is located under the pool wall in MABR district 11, locate at one side of the diagonal angle of the inlet tube 10, can also use as the evacuation pipe, achieve the goal of finally removing total phosphorus, this biological phosphorus removal process, need not enrich denitrification phosphorus-accumulating bacteria and aerobic phosphorus-accumulating bacteria, therefore operate more simply, remove the pollution better, organic nitrogen and nitrogen in sewage can be removed in the MABR district 11;
and thirdly, adding a dephosphorization reagent into the oxidation ditch through an externally arranged dosing device so as to assist in improving the removal rate of total phosphorus in the sewage.
In summary, after pretreatment, the domestic sewage enters an MABR zone 11 in an oxidation ditch through a water inlet pipe 10 and is fully mixed with activated sludge in the oxidation ditch under the guiding action of a stirrer 12, a microbial membrane is attached to the membrane surface of an aeration membrane assembly 9, part of organic pollutants and ammonia nitrogen in the sewage are diffused into an aerobic layer in the microbial membrane and are decomposed and converted into carbon dioxide and nitrate, the nitrate is reversely diffused into an anaerobic layer and an anaerobic layer outside the microbial membrane, denitrification is carried out on the nitrate and the organic pollutants in the sewage, N2 is formed to escape from water,
the pressure in the membrane of the aeration membrane component 9 is controlled at about 0.05MPa, the oxygen demand of an aerobic layer in a microbial membrane can be met, sewage can be in an anaerobic state, phosphorus accumulating bacteria in activated sludge can carry out anaerobic phosphorus release in the anaerobic state, the gas-water ratio in an MBR zone 2 is 15:1, when a muddy water mixed solution formed by the activated sludge and the sewage enters the MBR zone 2, the phosphorus accumulating bacteria carry out aerobic excessive phosphorus absorption, the treated sewage is discharged up to standard through a suction pump 5 by a water outlet pipe 4, the sludge concentration in the oxidation ditch is maintained at 3500-4000 mg/L, and the residual sludge rich in phosphorus is discharged out of the oxidation ditch through a sludge pipe 14 and is subjected to concentration, stabilization and dehydration and then is transported outwards for treatment;
and the total hydraulic retention time of the oxidation ditch is 8-10 h, wherein the hydraulic retention time of the MBR zone 2 is 1-3 h; the sludge age is 3-5 days; the horizontal flow rate was 0.25 m/s.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The novel oxidation ditch based on MABR-MBR combination comprises an oxidation ditch body (1), an MBR zone (2) and an MABR zone (11), and is characterized in that a wall body frame (13) is arranged on the inner side of the oxidation ditch body (1), a partition wall body (7) is further connected and arranged on the inner wall of the oxidation ditch body (1), and a space between the partition wall body (7) and the wall body frame (13) is the MBR zone (2);
three aeration membrane assemblies (9) and three stirrers (12) are arranged on one side, close to the wall frame (13), of the oxidation ditch body (1), two aeration membrane assemblies (9) and two stirrers (12) are arranged on the other side, close to the wall frame (13), of the oxidation ditch body (1), a separation membrane assembly (3) is arranged on the inner side, close to the partition wall body (7), of the oxidation ditch body (1), and a water suction pump and a water outlet pipe (4) are connected to the outer side of the separation membrane assembly (3) through a water outlet pipe (6);
the oxidation ditch comprises an oxidation ditch body (1), wherein a water inlet hole is formed in one side of the oxidation ditch body (1), a water inlet pipe (10) is fixedly arranged on the inner side of the water inlet hole, an injection hole is formed in the other side of the oxidation ditch body (1), a sludge pipe (14) is fixedly arranged on the inner side of the injection hole, the oxidation ditch body (1) is in a closed ditch shape, an inner side area of the oxidation ditch body (1) is divided into an MBR area (2) and an MABR area (11), the MBR area (2) and the MABR area (11) are mutually communicated, an aeration membrane component (9) is selected as a membrane aeration bioreactor, microbial membranes are formed on the surface of membrane materials of the MABR, an aerobic layer, a facultative layer and an anaerobic layer are respectively formed from inside to outside, a separation membrane component (3) is selected as a membrane bioreactor, and the membrane bioreactor is a combination of a membrane separation technology and a bioreactor.
2. The novel oxidation ditch based on MABR-MBR combination according to claim 1, wherein five stirrers (12) are arranged on the inner side of the oxidation ditch body (1), the stirrers (12) are arranged in a clockwise direction, the stirrers (12) are fixedly connected with the output end of a motor (8), and the motor (8) is arranged in the oxidation ditch body (1) through a supporting rod.
3. The novel oxidation ditch based on MABR-MBR combination according to claim 1, wherein a mounting hole is formed in one side, far away from the water inlet pipe (10), of the oxidation ditch body (1), a water outlet pipe (6) is arranged in the mounting hole, and one end of the water outlet pipe (6) is connected to the separation membrane assembly (3).
4. A novel oxidation ditch based on the combination of MABR-MBR according to claim 3, wherein the other end of the drain pipe (6) is connected to the inlet end of the suction pump (5), and the outlet end of the suction pump (5) is connected to the water outlet pipe (4).
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951731A (en) * | 2012-11-12 | 2013-03-06 | 清华大学 | Airlift oxidation ditch type membrane bioreactor |
| CN105923751A (en) * | 2016-05-13 | 2016-09-07 | 长安大学 | Ceramic membrane and membrane aeration biologic reactor provided with same |
| CN209668887U (en) * | 2019-03-15 | 2019-11-22 | 沈阳环境科学研究院 | One kind being based on New oxidation ditch associated with MABR-MBR |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951731A (en) * | 2012-11-12 | 2013-03-06 | 清华大学 | Airlift oxidation ditch type membrane bioreactor |
| CN105923751A (en) * | 2016-05-13 | 2016-09-07 | 长安大学 | Ceramic membrane and membrane aeration biologic reactor provided with same |
| CN209668887U (en) * | 2019-03-15 | 2019-11-22 | 沈阳环境科学研究院 | One kind being based on New oxidation ditch associated with MABR-MBR |
Non-Patent Citations (1)
| Title |
|---|
| 膜生物反应器在污水处理中的应用及其前景展望;牛涛涛;汪建根;李振玉;闫晓;;环境研究与监测(第01期) * |
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