CN215102256U

CN215102256U - Organic load resistant membrane bioreactor

Info

Publication number: CN215102256U
Application number: CN202121416648.9U
Authority: CN
Inventors: 伍运佶
Original assignee: Zhejiang Yuanmei Environment Technology Corp ltd
Current assignee: Zhejiang Yuanmei Environment Technology Corp ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-10
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses an organic load resistant membrane bioreactor, which comprises a reaction tank, a membrane separation zone, a membrane bioreactor and a membrane bioreactor, wherein the reaction tank is internally provided with a biological reaction zone and a membrane separation zone which is arranged around the biological reaction zone and the bottom of which is communicated with the biological reaction zone; at least one biological membrane component which is arranged in the membrane separation zone and is communicated to the outside of the reaction tank through a water collecting pipe for outputting clean water outwards; the stirring unit comprises a stirring shaft extending into the biological reaction zone from top to bottom and stirring blades sleeved on the periphery of the stirring shaft; and the filler unit is arranged on the periphery of the stirring shaft. The technical scheme can effectively avoid the membrane pollution problem caused by fine particles, and can degrade C OD and other related substances in the sewage to reduce the organic load of the whole membrane bioreaction area.

Description

Organic load resistant membrane bioreactor

Technical Field

The utility model relates to the technical field of water pollution treatment, in particular to an organic load resistant membrane bioreactor.

Background

The membrane bioreactor is a novel water treatment reactor combining a high-efficiency membrane separation technology with a traditional activated sludge method, organisms are completely intercepted in the bioreactor due to the filtering action of a membrane, the hydraulic retention time and the sludge age are thoroughly separated, and the sludge bulking problem in the traditional activated sludge is eliminated. The membrane bioreactor has the advantages of high pollutant removal efficiency, strong nitrification capacity, stable effluent quality, low residual sludge yield, simplified design and operation and the like, and has great application potential.

However, most of the traditional completely mixed MBR membrane tanks are square, membrane assemblies are placed in the middle of the tank body and are stirred by means of ascending water flow, and the uniform mixing of various substances can accelerate the generation of membrane pollution; and the membrane module occupies a larger position of the tank body, so that the filler is difficult to add, the organic load is limited, and the problem can be solved only by enlarging the tank body.

Based on the above, the present application is directed to redesigning a conventional membrane bioreactor to solve at least one of the above technical problems.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the invention provides the membrane bioreactor with organic load resistance, which aims to effectively avoid the membrane pollution problem caused by fine particles and degrade COD (chemical oxygen demand) and other related substances in sewage so as to reduce the organic load of the whole membrane bioreaction area, and is used for overcoming the technical defects.

The specific technical scheme is as follows:

a membrane bioreactor resistant to organic loading comprising:

the reaction tank is internally provided with a biological reaction area and a membrane separation area which is arranged around the biological reaction area and the bottom of which is communicated with the biological reaction area;

at least one biological membrane component which is arranged in the membrane separation zone and is communicated to the outside of the reaction tank through a water collecting pipe for outputting clean water outwards;

the stirring unit comprises a stirring shaft extending into the biological reaction zone from top to bottom and stirring blades sleeved on the periphery of the stirring shaft;

and the filler unit is arranged on the periphery of the stirring shaft.

Preferably, the reaction tank is surrounded by an annular shell wall, an inner wall is annularly arranged in the shell wall, and the inner part of the reaction tank is divided into a biological reaction area and a membrane separation area which are arranged inside and outside by the inner wall.

Preferably, the bottom of the reaction tank is obliquely arranged to form a sludge tank for collecting settled fine particles.

Preferably, the water collecting pipe is provided with a control valve for controlling the on-off of the water collecting pipe.

Preferably, the number of the biological membrane components is at least two, and the biological membrane components are symmetrically arranged in the membrane separation zone.

The beneficial effects of the above technical scheme are that:

the membrane bioreactor resisting organic load comprises a reaction tank, a biological membrane component, a stirring shaft, stirring blades and a filler unit, wherein a biological reaction area and a membrane separation area are formed in the reaction tank, the bottom of the biological reaction area is communicated with the bottom of the membrane separation area, the membrane pollution problem caused by fine particles can be effectively avoided, and COD (chemical oxygen demand) and other related substances in sewage can be degraded to reduce the organic load of the whole membrane biological reaction area.

Drawings

FIG. 1 is a schematic structural diagram of the membrane bioreactor for resisting organic load.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the following embodiments are specifically illustrated in conjunction with the accompanying drawings.

Referring to FIG. 1, the present embodiment provides a membrane bioreactor against organic load comprising:

the reaction tank is internally provided with a biological reaction zone 7 and a membrane separation zone 8 which is arranged around the biological reaction zone 7 and the bottom of which is communicated with the biological reaction zone 7;

at least one biological membrane component 2 which is arranged in the membrane separation area 8, and each biological membrane component 2 is communicated to the outside of the reaction tank through a water collecting pipe 6 and used for outputting clean water outwards;

the stirring unit comprises a stirring shaft 4 extending into the biological reaction zone 7 from top to bottom and stirring blades 5 sleeved on the periphery of the stirring shaft 4;

and a filler unit 11 installed on the outer circumference of the stirring shaft 4.

In the specific application, the biological membrane module 2 is completely immersed in the membrane separation area 8, sewage enters the biological reaction area 7 from the outside, and large-particle sludge and fine particles are doped in the sewage, the stirring shaft 4 is driven by a motor connected with external transmission to synchronously drive the stirring blades 5 to rotate and stir the sewage, so that water in the biological reaction area 7 is in a rotational flow state, the large-particle sludge enters the membrane separation area 8 through a liquid flow channel communicated with the biological reaction area 7 and the membrane separation area 8 under the action of centrifugal force, the fine particles are concentrated in the middle under the action of centrifugal force, treated clear water flows out of the outside through the water collecting pipe 6 under the action of the biological membrane module 2, and the fine particles are settled at the bottom of the reaction tank, so that the membrane pollution problem caused by the fine particles can be effectively avoided, and meanwhile, the filler loaded in the filler unit 11 can degrade COD and other related substances in the sewage in the biological reaction area 7, thereby reducing the organic load of the whole membrane biological reaction zone 7.

Based on the technical scheme, the anti-organic-load membrane bioreactor comprises a reaction tank, a biological membrane component 2, a stirring shaft 4, stirring blades 5 and a filler unit 11, wherein a biological reaction zone 7 and a membrane separation zone 8 which are communicated with each other at the bottom are formed in the reaction tank, the membrane pollution problem caused by fine particles can be effectively avoided, and COD (chemical oxygen demand) and other related substances in sewage can be degraded to reduce the organic load of the whole membrane biological reaction zone 7.

In a preferred embodiment, the reaction tank is surrounded by an annular housing wall 1, and an inner wall 3 is annularly arranged in the housing wall 1, and the inner part of the reaction tank is divided into a biological reaction zone 7 and a membrane separation zone 8 which are arranged inside and outside by the inner wall 3. Further, a sludge groove 9 is formed at the bottom of the reaction tank in an inclined manner and is used for collecting settled fine particles. Further, a control valve 10 is installed on the water collecting pipe 6 to control the on/off of the water collecting pipe 6, and a water pumping device, such as a water pump, is connected to the outside of the water collecting pipe 6. It should be noted that the above-mentioned filler unit 11 includes a hollow box and a filler contained in the box to achieve the above-mentioned technical purpose. The ring shape may be a circular ring shape, or may be a uniform polygonal ring shape, such as a quadrilateral, a hexagon, and the like, but is not limited thereto.

As a further preferred embodiment, the number of the biofilm assemblies 2 is at least two and are symmetrically arranged within the membrane separation zone 8.

The foregoing is only a preferred embodiment of the present invention, which is illustrative, not limiting. Those skilled in the art will appreciate that many variations, modifications, and equivalents may be made thereto without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A membrane bioreactor resistant to organic loading, comprising:

the reaction tank is internally provided with a biological reaction zone (7) and a membrane separation zone (8) which is arranged around the biological reaction zone (7) and the bottom of which is communicated with the biological reaction zone (7);

at least one biological membrane component (2) which is arranged in the membrane separation area (8), and each biological membrane component (2) is communicated to the outside of the reaction tank through a water collecting pipe (6) and used for outputting clean water outwards;

the stirring unit comprises a stirring shaft (4) extending into the biological reaction zone (7) from top to bottom and stirring blades (5) sleeved on the periphery of the stirring shaft (4);

and a filler unit (11) mounted on the outer periphery of the stirring shaft (4).

2. The membrane bioreactor for resisting organic load according to claim 1, wherein the reaction tank is surrounded by an annular outer shell wall (1), and an inner wall (3) is annularly arranged in the outer shell wall (1), and the inner part of the reaction tank is divided into the biological reaction zone (7) and the membrane separation zone (8) which are arranged inside and outside by the inner wall (3).

3. The membrane bioreactor for resisting organic load according to claim 1, wherein the bottom of the reaction tank is formed with a sludge tank (9) which is disposed slantwise and collects fine particles settled.

4. The membrane bioreactor for resisting organic load according to claim 1, characterized in that a control valve (10) is installed on the water collecting pipe (6) for controlling the on-off of the water collecting pipe (6).

5. The membrane bioreactor against organic loads according to claim 1 or 2, characterized in that the number of the biofilm modules (2) is at least two and are symmetrically arranged in the membrane separation zone (8).