CN212102175U

CN212102175U - MBR membrane bioreactor

Info

Publication number: CN212102175U
Application number: CN201922359802.2U
Authority: CN
Inventors: 张文广
Original assignee: Zhejiang Hongdian Environmental Protection Co ltd
Current assignee: Zhejiang Hongdian Environmental Protection Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-12-08
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a MBR membrane bioreactor, including membrane frame, membrane module, water outlet system and aeration systems, wherein it has one section vertical pipe and collector pipe to be linked together at least to go out among the water outlet system, is linked together with the collector pipe vertical pipe is the double-deck tubular construction that includes outer tube and inner tube, inner tube upper end and the sealed intercommunication of suction outlet pipe, the inner tube lower extreme is provided with the water inlet, the water inlet is in the position below the central stringcourse of membrane module. The water inlet position in the water outlet system is arranged at a height lower than the height of the water collecting pipe, so that the integral water outlet flux of the MBR membrane bioreactor is higher, and the energy consumption for pumping the water is lower. Therefore, when the sewage treatment capacity is equal, the use of the membrane material can be saved, and a self-sucking pump with lower power can be configured.

Description

MBR membrane bioreactor

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to an MBR (membrane bioreactor).

Background

An MBR (membrane bioreactor) is high-efficiency technical process equipment which organically combines a membrane separation technology and a biological treatment technology in a sewage treatment process. The conventional MBR process is to arrange an MBR membrane bioreactor in an aeration tank and effectively separate activated sludge from clear water through an MBR membrane component, so that a secondary sedimentation tank in the traditional activated sludge method can be omitted.

Conventional MBR membrane bioreactors typically include a membrane module, an effluent system, and an aeration system. Wherein, the performance of the membrane module and the design of the water outlet system are main factors influencing the water yield of the whole MBR membrane system. The water outlet system of the conventional MBR membrane bioreactor has the defects that the separating capacity of the MBR membrane system cannot be fully exerted, so that the water yield of the MBR membrane system is at a relatively low level, and the energy consumption for pumping water is high.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims at providing an MBR membrane bioreactor which can provide high-flux water outlet effect and reduce water outlet energy consumption.

The utility model provides a technical scheme that its technical problem adopted is: an MBR membrane bioreactor comprises a membrane frame, a membrane assembly, a water outlet system and an aeration system, wherein at least one section of vertical pipe in the water outlet system is communicated with a water collecting pipe, the vertical pipe communicated with the water collecting pipe is a double-layer pipe structure comprising an outer pipe and an inner pipe, the upper end of the inner pipe is hermetically communicated with a suction water outlet pipe, the lower end of the inner pipe is provided with a water inlet, and the water inlet is positioned below the central waist line of the membrane assembly.

In the above technical solution, preferably, the water inlet at the lower end of the inner pipe is higher than or lower than the center line of the water collecting pipe at the lowest position.

In the above technical solution, preferably, the lower end water inlet of the inner pipe is higher than or lower than the lower edge of the water collecting pipe at the lowest position.

In the above technical solution, preferably, the outer tube of the vertical tube communicated with the water collecting tube is directly served by the vertical structure tube of the membrane frame.

In the above technical solution, preferably, the water collecting pipe is directly served by a transverse structural pipe of the membrane frame.

The utility model has the advantages that: the water inlet position in the water outlet system is arranged at a height lower than the height of the water collecting pipe, so that the integral water outlet flux of the MBR membrane bioreactor is higher, and the energy consumption for pumping the water is lower. Therefore, when the sewage treatment capacity is equal, the use of the membrane material can be saved, and a self-sucking pump with lower power can be configured.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, 1, a membrane module, 2, a vertical pipe, 21, an outer pipe, 22, an inner pipe, 221, a water inlet, 23, a water collecting pipe, 3, an aeration system, 4, a membrane frame, 5, a vertical structural pipe and 6, a transverse structural pipe.

Detailed Description

Referring to fig. 1, in an embodiment of the present invention, an MBR membrane bioreactor comprises: a membrane frame 4, a membrane component 1, a water outlet system and an aeration system 3. Wherein the water outlet system comprises a vertical pipe 2 and an upper row and a lower row of water collecting pipes 23. The vertical pipe 2 and the water collecting pipe 23 are respectively served by the vertical structural pipe 5 and the transverse structural pipe 6 of the membrane frame 4, and the vertical pipe 2 is communicated with the water collecting pipe 23. The water collection pipe 23 is used to collect the system produced water from the membrane module 1. The vertical pipe 2 is a double-layer pipe structure comprising an outer pipe 21 and an inner pipe 22, the upper end of the inner pipe 22 is hermetically communicated with a suction water outlet pipe, and water produced by the system is sucked out of the MBR system by a suction water pump. The lower end of the inner pipe 22 is provided with a water inlet 221, and the position of the water inlet 221 is below the lower edge of the lower row of the water collecting pipe 23. Only when the position of the water inlet 221 of the inner tube 22 is low enough, it can be ensured that the water inlet thereof is always below the liquid level of the water produced by the MBR system, thereby ensuring that the suction water pump is always in an optimal efficient working state.

The above is only an embodiment of the present invention, and is not a limitation to the present invention in any form, and the present invention does not depart from the technical solution of the present invention, and the simple modification, equivalent change or modification made by the present invention all fall into the protection scope of the present invention.

Claims

1. The MBR membrane bioreactor comprises a membrane frame (4), a membrane module (1), a water outlet system and an aeration system (3), wherein at least one section of vertical pipe (2) in the water outlet system is communicated with a water collecting pipe (23), and is characterized in that the vertical pipe (2) communicated with the water collecting pipe (23) is a double-layer pipe structure comprising an outer pipe (21) and an inner pipe (22), the upper end of the inner pipe (22) is hermetically communicated with a suction water outlet pipe, the lower end of the inner pipe (22) is provided with a water inlet (221), and the water inlet (221) is positioned below the central waist line of the membrane module (1).

2. The MBR membrane bioreactor of claim 1, wherein the lower end water inlet (221) of the inner tube (22) is level with or below the centerline of the lowest positioned water collection tube (23).

3. The MBR membrane bioreactor of claim 2, wherein the lower end water inlet (221) of the inner tube (22) is level above or below the lower edge of the lowest positioned water collection tube (23).

4. The MBR membrane bioreactor according to any of claims 1-3, characterized in that the outer pipe (21) of the vertical pipe communicating with the water collection pipe (23) is directly served by the vertical structural pipe (5) of the membrane frame (4).

5. The MBR membrane bioreactor according to any of claims 1-3, characterized in that the water collection pipe (23) is directly served by the transverse structural pipes (6) of the membrane frame.