CN112897687B

CN112897687B - MBR membrane tank and sewage treatment environmental protection equipment

Info

Publication number: CN112897687B
Application number: CN202110489650.7A
Authority: CN
Inventors: 易海斯
Original assignee: Hunan Lantian Environmental Protection Technology Co ltd
Current assignee: Hunan Lantian Environmental Protection Technology Co ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2021-09-17
Anticipated expiration: 2041-05-06
Also published as: CN112897687A

Abstract

The invention discloses an MBR membrane tank and sewage treatment environmental protection equipment, wherein the MBR membrane tank comprises: the device comprises a tank body, a water tank and a water tank, wherein the tank body is provided with a treatment cavity with an opening at the upper part, and an aeration pipe supporting structure is arranged at the bottom of the treatment cavity; the aeration component comprises an aeration pipe, a vertical supporting piece and a vent pipe; the aeration pipe is supported on the aeration pipe supporting structure; the MBR membrane assembly comprises an MBR membrane structure and a drain pipe, the top of the MBR membrane structure is supported on the vertical supporting piece, and the drain pipe is connected with the MBR membrane structure; the bottom surface of the pool cover is provided with a pressing structure. According to the invention, the aeration pipe is directly supported by the aeration pipe supporting structure, the MBR membrane module is supported by the vertical supporting piece, and the MBR membrane module is compressed by the pressing structure of the tank cover, so that the MBR membrane module and the aeration module are fixedly installed without the aid of fasteners, and the aeration module is convenient to install and disassemble and convenient to maintain subsequently.

Description

MBR membrane tank and sewage treatment environmental protection equipment

Technical Field

The invention relates to sewage treatment equipment, in particular to an MBR (membrane bioreactor) membrane tank and sewage treatment environmental protection equipment.

Background

A Membrane Bioreactor (MBR) is a novel ecological wastewater treatment system organically combining a membrane separation technology and a biological treatment technology, and has the advantages of good effluent quality, low operation cost, less sludge, small occupied area and the like.

In the sewage treatment process, the MBR module is generally arranged in an aeration tank, and certain air is provided by aeration to play a certain washing effect on the membrane module. The aeration structure and the membrane module are usually fixed in the tank body through fasteners or directly welded in the tank, so that the assembly, the replacement and the disassembly and the maintenance of the aeration structure and the membrane module are troublesome.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an MBR membrane tank, which can be used for conveniently mounting and dismounting an aeration device and an MBR membrane component.

An MBR membrane tank according to an embodiment of the first aspect of the invention comprises: the device comprises a tank body, a water tank and a water tank, wherein the tank body is provided with a treatment cavity with an opening at the upper part, and an aeration pipe supporting structure is arranged at the bottom of the treatment cavity; the aeration component comprises an aeration pipe, a vertical supporting piece and a vent pipe; the aeration pipe is supported on the aeration pipe supporting structure, the vent pipe is communicated with the aeration pipe, and the bottom of the vertical supporting piece is connected with the outer wall of the aeration pipe; the MBR membrane assembly comprises an MBR membrane structure and a drain pipe, the top of the MBR membrane structure is supported on the vertical support member, and the drain pipe is connected with the MBR membrane structure and is used for leading out water purified by the MBR membrane structure; the tank cover is detachably covered at the upper end of the treatment cavity, and the bottom surface of the tank cover is provided with a pressing structure which tightly presses the upper end of the MBR membrane structure; wherein the breather pipe and the drain pipe both upwards penetrate through the tank cover and extend out of the tank body.

The MBR membrane tank provided by the embodiment of the invention at least has the following technical effects: the aeration pipe is directly supported by the aeration pipe supporting structure, the MBR membrane module is supported by the vertical supporting piece, and the MBR membrane module is compressed by the pressing structure of the tank cover, so that the MBR membrane module and the aeration module are fixedly installed without the aid of fasteners; in addition, the ventilating pipe and the drain pipe both upwards penetrate through the tank cover to extend out of the tank body instead of penetrating through the peripheral wall of the treatment cavity, so that the installation and the disassembly with external equipment are convenient; when the membrane bioreactor is disassembled, the MBR membrane assembly and the aeration assembly can be taken out in sequence only by disassembling the tank cover, and the membrane bioreactor is convenient to assemble and disassemble and convenient for subsequent maintenance.

According to some embodiments of the invention, the pool cover comprises a cover body, an insert and a sealing block; the edge of the cover body is provided with a first notch; the embedded block is embedded into the first notch, the embedded block is provided with a second notch, and an opening of the second notch is opposite to an opening of the first notch; the first notch and the second notch form an abdication hole for the vent pipe and the drain pipe to extend out of the pool body; the sealing block is clamped between the breather pipe and the drain pipe so as to seal a gap between the breather pipe and the drain pipe.

According to some embodiments of the invention, a caulking groove is arranged at the second gap, and the sealing block is embedded in the caulking groove; one side of the sealing block and the first notch form a first through hole for the drainage pipe to pass through, and the other side and the second notch form a second through hole for the vent pipe to pass through.

According to some embodiments of the present invention, the aeration pipe is provided with a plurality of aeration pipes, the plurality of aeration pipes are concentrically arranged around the aeration pipe at intervals, and a connecting pipe is communicated with the bottom of the aeration pipe and is communicated with all the aeration pipes.

According to some embodiments of the invention, the MBR membrane structure comprises an annular water pipe, MBR membranes, and a manifold; the annular water pipes are arranged in a plurality of concentric surrounding and spaced arrangement; the collecting pipe is provided with a plurality of annular water pipes which are arranged in a surrounding mode around the center of the annular water pipe, the collecting pipe is communicated with all the annular water pipes, and the plurality of collecting pipes are communicated with the drain pipe at the center of the annular water pipe; the upper end of the MBR membrane is connected with the annular water pipe.

According to some embodiments of the invention, the aerator pipe support structure comprises a first support column and a first support arc plate; the bottom end of the first support column is fixedly connected with the bottom wall of the treatment cavity, and the upper end of the first support column is connected with the first support arc plate; the bottom of the aeration pipe is embedded into a first supporting arc plate; the peripheral wall of the treatment cavity is provided with a limiting block, and the peripheral wall of the vent pipe is partially embedded into the limiting block.

According to some embodiments of the invention, the cell body comprises a cylindrical barrel and a cone; the cone is detachably connected to the bottom of the cylindrical barrel, and the cone and the cylindrical barrel form a treatment cavity; the aeration pipe supporting structure is connected to the inner wall of the cone.

According to some embodiments of the invention, the cone bottom is provided with an outlet and the cylinder peripheral wall is provided with an inlet.

According to some embodiments of the invention, the vertical supporting member comprises a second supporting column and a limiting plate, the bottom end of the second supporting column is fixedly connected with the outer wall of the aeration pipe, and the upper end of the second supporting column is fixedly connected with the limiting plate; the limiting plate is provided with a first limiting groove for the annular water pipe to be embedded in and a second limiting groove for the junction pipe to be embedded in.

According to the second aspect of the invention, the sewage treatment environmental protection equipment comprises the MBR membrane tank.

The sewage treatment environmental protection equipment provided by the embodiment of the invention at least has the following technical effects: the MBR membrane module and the aeration component are convenient to mount and dismount, and later maintenance is facilitated.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of an installation structure of an embodiment of the present invention;

FIG. 2 is a schematic view of an exploded state of a tank cover and a tank body according to an embodiment of the present invention;

FIG. 3 is an exploded view of an embodiment of the present invention;

FIG. 4 is a schematic diagram of the internal structure of an embodiment of the present invention;

FIG. 5 is a schematic view showing the exploded state of the aeration module and the MBR membrane module;

FIG. 6 is an enlarged schematic view at A of FIG. 2;

FIG. 7 is an enlarged schematic view at B of FIG. 3;

FIG. 8 is an enlarged schematic view at C of FIG. 5;

FIG. 9 is a schematic structural view of a cylindrical barrel;

fig. 10 is a bottom view structure diagram of the pool cover.

Reference numerals:

the device comprises a tank body 100, a cylindrical barrel 110, a limiting block 111, an inlet 112, a cone 120, a first support column 121, a first support arc plate 122 and an outlet 123;

the aeration component 200, the aeration pipe 210, the aeration pipe 220, the connecting pipe 221, the lifting rod 222, the second support column 230, the limit plate 240, the first limit groove 241 and the second limit groove 242;

an MBR membrane module 300, an MBR membrane structure 310, an annular water pipe 311, an MBR membrane 312, a collecting pipe 313 and a water drainage pipe 320;

the pool cover 400, the first through hole 401, the second through hole 402, the cover body 410, the exhaust pipe 411, the first notch 412, the first arc 413, the insert block 420, the second notch 421, the insert groove 422, the second arc 423, the sealing block 430, the pressing structure 440, and the pressing arc plate 441.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, an MBR membrane tank according to an embodiment of the present invention includes a tank body 100, an aeration assembly 200, an MBR membrane assembly 300, and a tank cover 400.

The tank body 100 is provided with a treatment cavity with an opening at the upper part, and an aeration pipe supporting structure is arranged at the bottom of the treatment cavity; aeration assembly 200 comprises aeration pipe 210, vertical support, aeration pipe 220; the aeration pipe 210 is supported on the aeration pipe supporting structure, the aeration pipe 220 is communicated with the aeration pipe 210, and the bottom of the vertical supporting piece is connected with the outer wall of the aeration pipe 210; the MBR membrane module 300 comprises an MBR membrane structure 310 and a drain pipe 320, wherein the top of the MBR membrane structure 310 is supported on the vertical support member, and the drain pipe 320 is connected with the MBR membrane structure 310 and is used for leading out water purified by the MBR membrane structure 310; the tank cover 400 is detachably covered at the upper end of the treatment cavity, the bottom surface of the tank cover 400 is provided with a downward pressing structure 440, and the downward pressing structure 440 tightly presses the upper end of the MBR membrane structure 310; wherein, the vent pipe 220 and the drain pipe 320 both upwards penetrate through the tank cover 400 and extend out of the tank body, and the vent pipe 220 and the drain pipe 320 do not penetrate through the peripheral wall of the treatment cavity and extend out, thereby being convenient for being installed and detached with external equipment.

According to the MBR membrane tank provided by the invention, the aeration pipe 210 is directly supported by the aeration pipe supporting structure, the MBR membrane module 300 is supported by the vertical supporting member, the MBR membrane module 300 is compressed by the pressing structure of the tank cover 400, and the MBR membrane module and the aeration module which are positioned in the tank cover are clamped by the aeration pipe supporting structure and the pressing structure, so that the MBR membrane module 300 and the aeration module 200 can be installed and fixed without the aid of fasteners, and the MBR membrane module 300 and the aeration module 200 can be sequentially taken out only by disassembling the tank cover 400 during disassembly, so that the MBR membrane tank is convenient to install and disassemble, and the subsequent maintenance is convenient.

Referring to fig. 3, 6 and 7, in some embodiments of the invention, the pool cover 400 comprises a cover body 410, an insert 420 and a sealing block 430; the lid body 410 has a first notch 412 at an edge thereof; the insert 420 is embedded in the first notch 412, the insert 420 has a second notch 421, and an opening of the second notch 421 is opposite to an opening of the first notch 412; the first notch 412 and the second notch 421 form a relief hole for the air pipe 220 and the water pipe 320 to extend out of the tank body 100; the sealing block 430 is interposed between the air pipe 220 and the drain pipe 320 to seal a gap between the air pipe 220 and the drain pipe 320. Since the openings of the first and

second notches

412 and 421 are opposite to each other, when disassembly is required, the cap body 410 and the insert 420 can be directly pulled out from two directions without interference of the vent pipe 220 and the drain pipe 320. Usually, the drain pipe 320 connects outside suction pump, take out the water after will purifying, breather pipe 220 then communicates outside air-blower, send the air into the cell body, realize the aeration, when installing like this, breather pipe 220 and drain pipe 320 all need be connected with external equipment, when needs only dismantle pond lid 400 in order to observe or other operations to cell body 100 inside, traditional structure, need be with breather pipe 220 and drain pipe 320 and external equipment's disconnection, just can make pond lid 400 from the top take out and dismantle, and adopt the split type structure of lid body 410 and abaculus 420 and the structural style of breach thereof, when making both dismantle, can directly take out from the side, and do not receive the interference of breather pipe 220 and drain pipe 320, it is simpler to dismantle. Usually, both the cover body 410 and the insert 420 are connected and fixed with the upper end of the tank body 100 through corresponding hole sites and bolt sets, and during disassembly, the cover body 410 and the insert 420 can be taken down to open the treatment cavity only by disassembling the bolt sets without disassembling the connection between the vent pipe 220 and the drain pipe 320 and external equipment, thereby simplifying the disassembly steps.

Referring to fig. 6 and 7, in some embodiments of the present invention, an insertion groove 422 is disposed at the second notch 421, an upper opening of the insertion groove 422 is disposed, the insertion groove 422 is disposed at a middle position of the second notch 421, and a width of the insertion groove 422 is greater than that of the second notch 421, such that a step is formed, the sealing block 430 is inserted into the insertion groove 422 and abuts against the step, and the sealing block 430 is inserted into the insertion groove 422 to achieve the installation and positioning thereof; one side of the sealing block 430 and the first notch 412 form a first through hole 401 for the drainage pipe 320 to pass through, the other side and the second notch 421 form a second through hole 402 for the ventilation pipe 220 to pass through, the contour size of the first through hole 401 is matched with the drainage pipe 320, the contour size of the second through hole 402 is matched with the ventilation pipe 220 to ensure good sealing performance, prevent odor generated by the internal sewage from leaking to pollute the surrounding environment, and a sealing structure can be arranged at the contact position of the insert block 420 and the first notch 412. Specifically, a first arc 413 is disposed inside the first notch 412, a second arc 423 is disposed inside the second notch 421, and the outlines of the two side edges of the sealing block 430 are both arcs and form a first through hole 401 and a second through hole 402 with the first arc 413 and the second arc 423, respectively. The sealing block 430 may be made of rubber.

Referring to fig. 5, in some embodiments of the present invention, a plurality of aeration pipes 210 are provided, the plurality of aeration pipes 210 are concentrically arranged around and spaced apart from each other, the tank 100 is cylindrical as a whole, and the aeration pipes 210 arranged around are more adapted to the shape of the tank 100. The aeration pipes 210 extend around a central point, aeration holes are uniformly distributed on the aeration pipes 210 along the extension path thereof to release air, and the aeration pipes 210 are arranged concentrically and at intervals; the bottom of the aeration pipe 220 is communicated with a connecting pipe 221, and the connecting pipe 221 is communicated with all aeration pipes 210. The connecting pipe 221 connects all the aeration pipes 210 and can supply air by sharing the aeration pipe 220, so that the whole aeration device is a whole and is convenient to integrally mount and dismount.

Referring to fig. 5, in some embodiments of the invention, MBR membrane structure 310 includes a circular water pipe 311, MBR membranes 312, and a manifold 313; the annular water pipes 311 are arranged in a plurality of concentric surrounding and spaced arrangement; the annular water pipe 311 extends around a central point, and the plurality of annular water pipes 311 are concentric and arranged at intervals; the collecting pipe 313 is provided with a plurality of pipes which are arranged around the center of the annular water pipe 311 in a surrounding way, the collecting pipe 313 is communicated with all the annular water pipes 311, and the plurality of collecting pipes 313 are communicated with the water discharge pipe 320 at the center of the annular water pipe 311; specifically, the extending direction of the collecting pipe 313 passes through the surrounding central point of the annular water pipe 311, the collecting pipe 313 is provided with four and uniformly arranged in a surrounding manner, and the four collecting pipes 313 are collected at the central position and communicated with the water discharge pipe 320 so as to discharge purified water from the water discharge pipe 320. The upper end of the MBR membrane 312 is connected to the annular water pipe 311, the MBR membrane 312 can be in a filament shape or a flat plate shape, and the inner cavity of the MBR membrane 312 is communicated with the annular water pipe 311 so as to introduce purified water into the annular water pipe. Each annular water pipe 311 is divided into four parts by four collecting pipes 313, and an MBR membrane 312 is installed in each part. In addition, the center of the annular water pipe 311 is on the same vertical axis with the center of the aeration pipe 210, so that the annular water pipe 311 can correspond to the aeration pipe 210 in position, and better aeration and flushing are realized.

Referring to fig. 5 and 9, in some embodiments of the present invention, the aeration tube supporting structure includes a first support column 121 and a first support arc plate 122; the bottom end of the first support column 121 is fixedly connected with the bottom wall of the treatment cavity, and the upper end is connected with the first support arc plate 122; the bottom of the aeration pipe 210 is embedded into the first supporting arc plate 122, the first supporting arc plate 122 is provided with a limiting groove matched with the profile of the aeration pipe 210, and the aeration pipe 210 is embedded into the limiting groove of the first supporting arc plate 122, so that radial limiting can be realized; the plurality of aeration tubes 210 are arranged in a surrounding manner to support the aeration tubes 210 at multiple positions, and the aeration tubes 210 are connected by the connection pipe 221, so that the aeration tube support structure can support only one aeration tube 210. The treatment chamber perisporium is equipped with stopper 111, breather pipe 220 perisporium part embedding stopper 111, the skew center of encircleing of aeration pipe 210 of breather pipe 220, stopper 111 can realize spacing to whole aeration subassembly 200 circumference to the spacing of breather pipe 220 to this accurate positioning of aeration subassembly 200 is realized, and does not influence the installation and dismantles, for the convenience of dismantling and mentions aeration subassembly 200, breather pipe 220 perisporium first position is equipped with a lifting rod 222, makes things convenient for the hand to hold and mentions it wholly.

Referring to fig. 3 and 4, in some embodiments of the invention, cell body 100 includes a cylindrical barrel 110 and a cone 120; the cone 120 is detachably connected to the bottom of the cylindrical barrel 110, and the cone 120 and the cylindrical barrel 110 form a treatment cavity; the aerator pipe support structure is attached to the inner wall of the cone 120. Usually, the aeration pipe bearing structure is welded at the treatment chamber inner wall, but the cell body 100 is darker, if the cell body is the manufacturing of integrative structure, aeration pipe bearing structure is difficult to install in the cell body bottom, and the detachable connection structure of cylinder 110 and cone 120 for aeration pipe bearing structure can install earlier on cone 120, and the installation degree of difficulty descends. In addition, the detachable connection of the cone 120 and the cylinder 110 may be achieved by a bolt set.

In some embodiments of the present invention, the bottom of the cone 120 is provided with an outlet 123, and the peripheral wall of the cylindrical barrel 110 is provided with an inlet 112; a valve can be arranged at the outlet 123 to control the opening and the closing, so that the liquid and the impurities staying in the tank can be discharged; the inlet 112 may be in communication with a water pump via a conduit to direct the wastewater to be purified into the treatment chamber. Of course, in other embodiments, the inlet may also be provided on the well cover. In addition, the tank cover 400 is provided with an exhaust pipe 411 to prevent the internal air pressure from being too high during aeration, and the exhaust pipe 411 can be communicated with an air purification mechanism to prevent the internal odor from being directly exhausted to the outside.

Referring to fig. 5 and 8, in some embodiments of the present invention, the vertical support comprises a second support column 230 and a limiting plate 240, wherein the bottom end of the second support column 230 is fixedly connected to the outer wall of the aeration tube 210, and the upper end of the second support column is fixedly connected to the limiting plate 240; the stopper plate 240 has a first stopper groove 241 in which the circular water pipe 311 is partially inserted and a second stopper groove 242 in which the manifold 313 is partially inserted. The first limiting groove 241 limits the annular water pipe 311 in the radial direction, and the second limiting groove 242 limits the collecting pipe 313 in the circumferential direction, so that the precise positioning of the whole MBR membrane module is realized.

Referring to fig. 10, in the embodiment of the present invention, the downward pressing structure 440 is a downwardly extending cylinder, and the bottom of the downward pressing structure 440 is provided with a downward pressing circular arc plate 441 adapted to the contour of the annular water pipe 311, which cooperates with the limiting plate 240 to fix the position of the MBR membrane module.

The invention also provides sewage treatment environmental protection equipment which comprises the MBR membrane tank and is matched with sewage treatment equipment such as a grid tank, an anaerobic tank and the like to realize comprehensive purification of sewage.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An MBR membrane tank, which is characterized by comprising:

the device comprises a tank body (100), wherein the tank body (100) is provided with a treatment cavity with an opening at the upper part, and an aeration pipe supporting structure is arranged at the bottom of the treatment cavity;

the aeration assembly (200) comprises an aeration pipe (210), a vertical support and a ventilation pipe (220); the aeration pipe (210) is supported on the aeration pipe supporting structure, the aeration pipe (220) is communicated with the aeration pipe (210), and the bottom of the vertical supporting piece is connected with the outer wall of the aeration pipe (210);

an MBR membrane module (300) comprising an MBR membrane structure (310) and a drain pipe (320), wherein the top of the MBR membrane structure (310) is supported on the vertical support, and the drain pipe (320) is connected with the MBR membrane structure (310);

the tank cover (400) is detachably covered at the upper end of the treatment cavity, the bottom surface of the tank cover is provided with a pressing structure (440), and the pressing structure (440) compresses the MBR membrane structure (310);

wherein the vent pipe (220) and the drain pipe (320) both pass through the tank cover (400) upwards to extend out of the tank body; the pool cover (400) comprises a cover body (410), an insert (420) and a sealing block (430);

the edge of the cover body (410) is provided with a first notch (412);

the embedded block (420) is embedded into the first notch (412), the embedded block (420) is provided with a second notch (421), and the opening of the second notch (421) is opposite to the opening of the first notch (412); the first notch (412) and the second notch (421) enclose a yielding hole for the vent pipe (220) and the drain pipe (320) to extend out of the tank body (100);

the sealing block (430) is clamped between the air pipe (220) and the water discharge pipe (320) to seal a gap between the air pipe (220) and the water discharge pipe (320).

2. The MBR membrane tank of claim 1, wherein: an embedded groove (422) is formed in the second notch (421), and the sealing block (430) is embedded into the embedded groove (422); one side of the sealing block (430) and the first notch (412) form a first through hole (401) for the drainage pipe (320) to pass through, and the other side and the second notch (421) form a second through hole (402) for the ventilation pipe (220) to pass through.

3. The MBR membrane tank of claim 1, wherein: aeration pipe (210) are equipped with a plurality ofly, and is a plurality of aeration pipe (210) concentric ring is around and the interval sets up, breather pipe (220) bottom intercommunication has a connecting pipe (221), connecting pipe (221) and all aeration pipe (210) intercommunication.

4. The MBR membrane tank of claim 3, wherein: the MBR membrane structure (310) comprises an annular water pipe (311), an MBR membrane (312) and a collecting pipe (313);

the annular water pipes (311) are arranged in a plurality of concentric surrounding and spaced arrangement;

the collecting pipe (313) is provided with a plurality of pipes which are arranged around the center of the annular water pipe (311) in a surrounding way, the collecting pipe (313) is communicated with all the annular water pipes (311), and the plurality of collecting pipes (313) are communicated with the water discharge pipe (320) at the center of the annular water pipe (311); the upper end of the MBR membrane (312) is connected to the annular water pipe (311).

5. The MBR membrane tank of claim 4, wherein: the aerator pipe support structure comprises a first support column (121) and a first support arc plate (122); the bottom end of the first support column (121) is fixedly connected with the bottom wall of the treatment cavity, and the upper end of the first support column is connected with the first support arc plate (122); the bottom of the aeration pipe (210) is embedded into the first supporting arc plate (122); the peripheral wall of the treatment cavity is provided with a limiting block (111), and the peripheral wall of the vent pipe (220) is partially embedded into the limiting block (111).

6. The MBR membrane tank of claim 5, wherein: the tank body (100) comprises a cylindrical barrel body (110) and a cone body (120); the cone (120) is detachably connected to the bottom of the cylindrical barrel (110), and the cone (120) and the cylindrical barrel (110) form a treatment cavity; the aerator pipe support structure is connected to the inner wall of the cone (120).

7. The MBR membrane tank of claim 6, wherein: an outlet (123) is formed in the bottom of the cone (120), and an inlet (112) is formed in the peripheral wall of the cylindrical barrel (110).

8. The MBR membrane tank of claim 4, wherein: the vertical supporting piece comprises a second supporting column (230) and a limiting plate (240), the bottom end of the second supporting column (230) is fixedly connected with the outer wall of the aeration pipe (210), and the upper end of the second supporting column is fixedly connected with the limiting plate (240); the limiting plate (240) is provided with a first limiting groove (241) for the annular water pipe (311) to be partially embedded and a second limiting groove (242) for the collecting pipe (313) to be partially embedded.

9. The utility model provides a sewage treatment environmental protection equipment which characterized in that: comprising the MBR membrane tank of any one of claims 1 to 8.