Membrane biological reaction system

Abstract

The invention discloses a membrane biological reaction system, aiming at providing a membrane biological reaction system which is compact in structure, small in occupied space, capable of reducing the sludge concentration of a submersible membrane processing unit, and prolonging the service time of a membrane assembly. A sludge and water separation device is arranged between an aerobic pool of the biological processing unit and the immersed membrane processing unit and consists of a pool body, a first guide wall, a second guide wall, a third guide wall and an aerating device, the aerating device is arranged at one side of the bottom of the pool body, the first guide wall is outward obliquely arranged in a manner of forming an angle of 110-120 degrees with the horizontal direction, the lower end of the third guide wall corresponds to the lower end of the first guide wall at a projection point at the bottom of the pool body, the third guide wall and the bottom of the pool body are outward inclined by an angle of 60-75 degrees, and the second guide wall is perpendicular to the bottom of the pool body and positioned between the first guide wall and the third guide wall. The system does not require entire separation of mixed liquid, and is short in residence time, compact in structure and small in occupied space.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a membrane biological reaction system. Background technique [0002] In recent years, with the rapid development of social economy and the improvement of people's living standards, on the one hand, the demand for water resources in all walks of life has increased sharply, on the other hand, there are low water resource utilization efficiency, low reuse rate, and serious water pollution. And other issues. Especially in some areas where water resources are tight, such as economically developed coastal cities, such as Tianjin, Beijing, etc., more and more places have established sewage treatment plants, reclaimed water plants, and seawater desalination plants, which have alleviated the demand for water resources for economic development to a certain extent. . [0003] MBR (membrane biological reactor, membrane biological reactor) is a new water treatment technology combin...

AI Technical Summary

Problems solved by technology

However, most of the existing devices for reducing sludge concentration need to install a separate sludge-water separation device between the biological reaction unit and the submerged membrane treatment unit, which is extremely inconvenient to rebuild the existing MBR system or biological reaction tank structure. Convenience, especially for sewage treatment plants with compact structures and insufficient spare land

At the same time, the space occupied by the mud-water separation device is only equivalent to the rapid sedimentation tank, which is not fully and effectively utilized.

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