CN212800047U - Composite membrane bioreactor - Google Patents
Composite membrane bioreactor Download PDFInfo
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- CN212800047U CN212800047U CN202021194399.9U CN202021194399U CN212800047U CN 212800047 U CN212800047 U CN 212800047U CN 202021194399 U CN202021194399 U CN 202021194399U CN 212800047 U CN212800047 U CN 212800047U
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Abstract
The utility model relates to a compound membrane bioreactor, including reaction box and former water tank, well water tank, the reaction box with install raw water pump, self priming pump between former water tank, the well water tank, it is regional with the membrane module to be provided with biochemical pond area in the reaction box, biochemical pond area demountable installation has first baffle and second baffle, a plurality of filtration through-holes have all been seted up on first baffle and the second baffle, first baffle with the second baffle will biochemical pond area divides into three region, install the filter membrane pipeline in the membrane module area. The invention can realize the switching of two sewage treatment process functions of an activated sludge method plus a membrane method and a biological carrier contact oxidation method plus a membrane method, and can realize the contrast operation of sewage purification by a flat membrane and a hollow membrane double-membrane method through the switching of the valve body.
Description
Technical Field
The utility model relates to a composite membrane bioreactor which is suitable for technical occasions for treating sewage.
Background
An MBR membrane bioreactor is a novel high-efficiency sewage treatment process combining a high-efficiency membrane separation technology with a traditional activated sludge method, and replaces a terminal secondary sedimentation tank of the traditional biological treatment technology with a membrane component, so that the concentration of high-activity sludge is kept in the bioreactor, the organic load of biological treatment is improved, the floor area of a sewage treatment facility is reduced, and the amount of excess sludge is reduced by keeping low sludge load. Mainly utilizes the membrane separation equipment immersed in the aerobic biological tank to trap the activated sludge and macromolecular organic matters in the tank. The membrane bioreactor can retain microorganisms with longer generation period due to the effective interception function, and can realize deep purification of sewage. However, most of the MBR membrane bioreactors only perform sewage purification in a single mode of 'activated sludge process + membrane process', have single function, and lack comparison and contrast of purification effects among different membranes.
SUMMERY OF THE UTILITY MODEL
The invention aims to provide a composite membrane bioreactor which can realize the function switching between two sewage treatment processes of an activated sludge method plus a membrane method and a biological carrier contact oxidation method plus the membrane method.
In order to realize the purpose, the invention adopts the technical scheme that: the utility model provides a compound membrane bioreactor, includes reaction box and former water tank, the reaction box with install the raw water pump between the former water tank, it is regional with the membrane module to be provided with biochemical pond in the reaction box, the regional demountable installation in biochemical pond has first baffle and second baffle, a plurality of filtration through-holes have all been seted up on first baffle and the second baffle, first baffle with the second baffle will the regional three region that divides of biochemical pond, install the filter membrane pipeline in the membrane module region.
In the above scheme, the filter membrane pipeline in the membrane module area is divided into a hollow membrane filter membrane pipeline and a flat membrane filter membrane pipeline, and the hollow membrane filter membrane pipeline and the flat membrane filter membrane pipeline are symmetrically distributed on two sides of the biochemical pool area.
In the above scheme, cavity membrane filter membrane pipeline includes the cavity membrane unit, dull and stereotyped membrane filter membrane pipeline includes dull and stereotyped membrane unit, the cavity membrane unit with dull and stereotyped membrane unit is parallelly connected with the input of self priming pump, the output and the first well water tank of self priming pump are connected.
In the above scheme, well hollow membrane unit with install first manual valve between the input of self priming pump, dull and stereotyped membrane unit with install the manual valve of second between the input of self priming pump, first solenoid valve is installed to the input port of self priming pump, the delivery outlet of self priming pump with install the second solenoid valve between the first well water tank.
In the scheme, the membrane bioreactor further comprises a backwashing pump, the hollow membrane unit and the flat membrane unit are connected with the output end of the backwashing pump in parallel, and the input end of the backwashing pump is connected with the second reclaimed water tank.
In the scheme, a third electromagnetic valve is installed at the output port of the backwashing pump, and a fourth electromagnetic valve is installed between the input port of the backwashing pump and the second reclaimed water tank.
In the scheme, the biochemical pool area is connected with an aeration pump through a pipeline.
In the scheme, the reaction box body is also connected with the dosing box through a pipeline.
In the above scheme, the dosing tank, the raw water tank, the reaction tank body, the first intermediate water tank and the second intermediate water tank are integrally arranged.
The invention has the beneficial effects that: (1) the invention can realize the function switching between two sewage treatment processes of an activated sludge method plus a membrane method and a biological carrier contact oxidation method plus a membrane method by detachably installing a first clapboard and a second clapboard above a biochemical pool area. Namely: when sewage purification is carried out by adopting an activated sludge method and a membrane method, the first partition plate and the second partition plate can be detached in advance, activated sludge is arranged at the bottom of the biochemical pool area, sewage in the raw water tank is pumped into the biochemical pool area through the raw water pump, preliminary purification is carried out through the activated sludge, and then the preliminarily purified sewage is pumped into the first middle water tank from the filter membrane unit through the filter membrane pipeline arranged in the membrane module area after being filtered and purified again under the action of the self-priming pump. When sewage purification is required to be carried out by adopting a biological carrier contact oxidation method and a membrane method, a first partition plate and a second partition plate are arranged above a biochemical pool area in advance, a sponge body used by the biological carrier contact oxidation method is placed in an area between the first partition plate and the second partition plate, sewage in a raw water tank is pumped into the biochemical pool area through a raw water pump, preliminary purification is carried out under the action of the sponge body, and then a filter membrane pipeline arranged in a membrane module area filters and purifies the preliminarily purified sewage again from a filter membrane unit under the action of a self-priming pump and then pumps the sewage into a first middle water tank. (2) Through two membrane pipelines of the hollow membrane filter membrane pipeline and the flat membrane filter membrane pipeline arranged in the biochemical pool area, the switching of two different membrane purification loops of the hollow membrane and the flat membrane can be quickly realized by adjusting the manual valve. (3) By adding a backwashing pump loop, the membrane flushing function of the hollow membrane filter membrane pipeline and the flat membrane filter membrane pipeline after working can be realized, and the service life of the membrane component is prolonged.
Drawings
FIG. 1 is a process diagram of the present invention.
FIG. 2 is a schematic diagram showing the positions of the dosing tank, the raw water tank, the reaction tank body, the first intermediate water tank and the second intermediate water tank according to the present invention.
Fig. 3 is a schematic view in the direction of a-a in fig. 2.
Fig. 4 is a schematic structural view of the first separator (second separator).
In the figure: 1. a raw water tank; 2. a raw water pump; 3. an aeration pump; 4. a reaction box body; 4-1, a biochemical pool area; 4-1-1. a first separator; 4-1-2. a second separator; 4-2. membrane module zone; 4-2-1, hollow membrane filter membrane pipeline; 4-2-2. flat membrane filter membrane pipeline; 5-1, hollow membrane units; 5-2. a flat membrane unit; 6. a self-priming pump; 7. a backwash pump; 8-1, a first intermediate water tank; 8-2. a second intermediate water tank; 9. a dosing box; 9-1. a first manual valve; 9-2. a second manual valve; 10-1, a first electromagnetic valve; 10-2. a second electromagnetic valve; 11-1. a third electromagnetic valve; 11-2, a fourth electromagnetic valve.
Detailed Description
The technical solution of the present invention will be described in more detail with reference to the accompanying drawings.
As shown in fig. 1, fig. 2 and fig. 3, the composite membrane bioreactor provided in this embodiment includes a reaction tank 4 and a raw water tank 1, a raw water pump 2 is installed between the reaction tank 4 and the raw water tank 1, the reaction tank 4 is connected to a dosing tank 9 through a pipeline, and when elements such as phosphorus and nitrogen in sewage far exceed the purification standard of the reactor, the purification process of the elements such as phosphorus and nitrogen can be enhanced by adding a special chemical into the reaction tank 4. The aeration pump 3 is connected with a pipeline of a biochemical pool area 4-1 in the reaction box body 4 and is used for providing sufficient reaction gas in the reaction box body 4.
As shown in fig. 2 and 3, the dosing tank 9, the raw water tank 1, the reaction tank 4, the first intermediate water tank 8-1, and the second intermediate water tank 8-2 are integrally provided. A biochemical tank area 4-1 and a membrane module area 4-2 are arranged in the reaction box body 4, a first partition plate 4-1-1 and a second partition plate 4-1-2 are detachably mounted in the biochemical tank area 4-1, a plurality of filtering through holes (as shown in figure 4) are formed in the first partition plate 4-1-1 and the second partition plate 4-1-2, the biochemical tank area 4-1 is divided into three areas by the first partition plate 4-1-1 and the second partition plate 4-1-2, and a filter membrane pipeline is mounted in the membrane module area 4-2. The membrane pipeline in the membrane module area 4-2 is divided into a hollow membrane pipeline 4-2-1 and a flat membrane pipeline 4-2-2, and the hollow membrane pipeline 4-2-1 and the flat membrane pipeline 4-2-2 are symmetrically distributed on two sides of the biochemical pool area 4-1.
As shown in fig. 1, the hollow membrane filter pipeline 4-2-1 includes a hollow membrane unit 5-1, the flat membrane filter pipeline 4-2-2 includes a flat membrane unit 5-2, the hollow membrane unit 5-1 and the flat membrane unit 5-2 are connected in parallel with an input end of a self-priming pump 6, and an output end of the self-priming pump 6 is connected with a first intermediate water tank 8-1. Well hollow membrane unit 5-1 with install first manual valve 9-1 between self priming pump 6's the input, dull and stereotyped membrane unit 5-2 with install second manual valve 9-2 between self priming pump 6's the input, first solenoid valve 10-1 is installed to self priming pump 6's input port, self priming pump 6's delivery outlet with install second solenoid valve 10-2 between the first well water tank 8-1. The hollow membrane unit 5-1 and the flat membrane unit 5-2 are connected with the output end of the backwashing pump 7 in parallel, and the input end of the backwashing pump 7 is connected with the second reclaimed water tank 8-2. A third electromagnetic valve 11-1 is installed at the output port of the backwashing pump 7, and a fourth electromagnetic valve 11-2 is installed between the input port of the backwashing pump 7 and the second intermediate water tank 8-2.
The process for purifying wastewater by the "activated sludge method + membrane method" of this example was analyzed as follows.
When sewage is purified by an activated sludge method and a membrane method, the first partition plate 4-1-1 and the second partition plate 4-1-2 can be detached in advance, activated sludge is arranged at the bottom of the biochemical pool area 4-1, the aeration pump 3 provides aeration for the activated sludge, sewage in the raw water tank 1 is pumped into the biochemical pool area 4-1 through the raw water pump 2, and primary purification is carried out through the activated sludge.
The sewage after preliminary purification can divide into again that the hollow membrane purifies and two kinds of purification modes of flat membrane purification: when the hollow membrane is purified, the first manual valve 9-1, the first electromagnetic valve 10-1 and the second electromagnetic valve 10-2 are all opened, the second manual valve 9-2, the third electromagnetic valve 11-1 and the fourth electromagnetic valve 11-2 are all closed, the self-priming pump 6 is opened, the backwashing pump 7 is closed, and sewage primarily purified under the action of the self-priming pump 6 is pumped into the first middle water tank 8-1 after being filtered and purified again by the hollow membrane unit 5-1. After the operation is finished, the first electromagnetic valve 10-1 and the second electromagnetic valve 10-2 are closed, the third electromagnetic valve 11-1 and the fourth electromagnetic valve 11-2 are opened, the self-priming pump 6 is closed, the backwashing pump 7 is opened, and the purified water in the second reclaimed water tank 8-2 is used for backwashing the hollow membrane unit 5-1 under the action of the backwashing pump 7 so as to prolong the service life of the hollow membrane unit 5-1. When the flat membrane is purified, the second manual valve 9-2, the first electromagnetic valve 10-1 and the second electromagnetic valve 10-2 are all opened, the first manual valve 9-1, the third electromagnetic valve 11-1 and the fourth electromagnetic valve 11-2 are all closed, the self-priming pump 6 is opened, the backwashing pump 7 is closed, and sewage primarily purified under the action of the self-priming pump 6 is filtered and purified again from the flat membrane unit 5-2 and then is pumped into the first middle water tank 8-1. After the operation is finished, the first electromagnetic valve 10-1 and the second electromagnetic valve 10-2 are closed, the third electromagnetic valve 11-1 and the fourth electromagnetic valve 11-2 are opened, the self-priming pump 6 is closed, the backwashing pump 7 is opened, and the purified water in the second intermediate water tank 8-2 is used for backwashing the flat membrane unit 5-2 under the action of the backwashing pump 7, so that the service life of the flat membrane unit 5-2 is prolonged.
The process for purifying wastewater by the "bio-carrier contact oxidation + membrane method" of this example was analyzed as follows.
When the biological carrier contact oxidation method plus the membrane method is used for sewage purification, a first partition plate 4-1-1 and a second partition plate 4-1-2 are arranged above a biochemical pool area 4-1 in advance, a sponge body used by the biological carrier contact oxidation method is placed in an area between the first partition plate 4-1-1 and the second partition plate 4-1-2, sewage in a raw water tank 1 is pumped into the biochemical pool area 4-1 through a raw water pump 2, and preliminary purification is carried out under the action of the sponge body.
The sewage after preliminary purification can divide into again that the hollow membrane purifies and two kinds of purification modes of flat membrane purification: when the hollow membrane is purified, the first manual valve 9-1, the first electromagnetic valve 10-1 and the second electromagnetic valve 10-2 are all opened, the second manual valve 9-2, the third electromagnetic valve 11-1 and the fourth electromagnetic valve 11-2 are all closed, the self-priming pump 6 is opened, the backwashing pump 7 is closed, and sewage primarily purified under the action of the self-priming pump 6 is pumped into the first middle water tank 8-1 after being filtered and purified again by the hollow membrane unit 5-1. After the operation is finished, the first electromagnetic valve 10-1 and the second electromagnetic valve 10-2 are closed, the third electromagnetic valve 11-1 and the fourth electromagnetic valve 11-2 are opened, the self-priming pump 6 is closed, the backwashing pump 7 is opened, and the purified water in the second reclaimed water tank 8-2 is used for backwashing the hollow membrane unit 5-1 under the action of the backwashing pump 7 so as to prolong the service life of the hollow membrane unit 5-1. When the flat membrane is purified, the second manual valve 9-2, the first electromagnetic valve 10-1 and the second electromagnetic valve 10-2 are all opened, the first manual valve 9-1, the third electromagnetic valve 11-1 and the fourth electromagnetic valve 11-2 are all closed, the self-priming pump 6 is opened, the backwashing pump 7 is closed, and sewage primarily purified under the action of the self-priming pump 6 is filtered and purified again from the flat membrane unit 5-2 and then is pumped into the first middle water tank 8-1. After the operation is finished, the first electromagnetic valve 10-1 and the second electromagnetic valve 10-2 are closed, the third electromagnetic valve 11-1 and the fourth electromagnetic valve 11-2 are opened, the self-priming pump 6 is closed, the backwashing pump 7 is opened, and the purified water in the second intermediate water tank 8-2 is used for backwashing the flat membrane unit 5-2 under the action of the backwashing pump 7, so that the service life of the flat membrane unit 5-2 is prolonged.
Claims (8)
1. A composite membrane bioreactor comprises a reaction tank body (4) and a raw water tank (1), wherein a raw water pump (2) is arranged between the reaction tank body (4) and the raw water tank (1), and is characterized in that a biochemical pool area (4-1) and a membrane assembly area (4-2) are arranged in the reaction tank body (4), a first partition plate (4-1-1) and a second partition plate (4-1-2) are detachably arranged in the biochemical pool area (4-1), a plurality of filtering through holes are respectively formed in the first partition plate (4-1-1) and the second partition plate (4-1-2), the biochemical pool area (4-1) is divided into three areas by the first partition plate (4-1-1) and the second partition plate (4-1-2), and a filter membrane pipeline is arranged in the membrane component area (4-2).
2. The composite membrane bioreactor as claimed in claim 1, wherein the membrane pipelines in the membrane module zone (4-2) are divided into a hollow membrane pipeline (4-2-1) and a flat membrane pipeline (4-2-2), and the hollow membrane pipeline (4-2-1) and the flat membrane pipeline (4-2-2) are symmetrically distributed on both sides of the biochemical pool zone (4-1).
3. A composite membrane bioreactor according to claim 2, wherein the hollow membrane filter line (4-2-1) comprises a hollow membrane unit (5-1), the flat membrane filter line (4-2-2) comprises a flat membrane unit (5-2), the hollow membrane unit (5-1) and the flat membrane unit (5-2) are connected in parallel with the input of a self-priming pump (6), and the output of the self-priming pump (6) is connected with the first intermediate water tank (8-1).
4. A composite membrane bioreactor according to claim 3, wherein a first manual valve (9-1) is installed between the hollow membrane unit (5-1) and the input end of the self-priming pump (6), a second manual valve (9-2) is installed between the flat membrane unit (5-2) and the input end of the self-priming pump (6), a first electromagnetic valve (10-1) is installed at the input port of the self-priming pump (6), and a second electromagnetic valve (10-2) is installed between the output port of the self-priming pump (6) and the first intermediate water tank (8-1).
5. A composite membrane bioreactor according to claim 3, further comprising a backwash pump (7), wherein the hollow membrane unit (5-1) and the flat membrane unit (5-2) are connected in parallel with the output end of the backwash pump (7), and the input end of the backwash pump (7) is connected with the second intermediate water tank (8-2).
6. A composite membrane bioreactor according to claim 5, characterized in that a third solenoid valve (11-1) is installed at the output of the backwash pump (7), and a fourth solenoid valve (11-2) is installed between the input of the backwash pump (7) and the second intermediate water tank (8-2).
7. The composite membrane bioreactor according to any one of claims 1 to 6, wherein the biochemical tank region (4-1) is connected to the aeration pump (3) by a pipeline.
8. A composite membrane bioreactor according to any one of claims 1 to 6, characterised in that the reaction tank (4) is further connected to a dosing tank (9) via a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021194399.9U CN212800047U (en) | 2020-06-24 | 2020-06-24 | Composite membrane bioreactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021194399.9U CN212800047U (en) | 2020-06-24 | 2020-06-24 | Composite membrane bioreactor |
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| Publication Number | Publication Date |
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| CN212800047U true CN212800047U (en) | 2021-03-26 |
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| CN202021194399.9U Active CN212800047U (en) | 2020-06-24 | 2020-06-24 | Composite membrane bioreactor |
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