Low-energy consumption and self-returning type membrane bioreactor

Abstract

The invention discloses a low-energy consumption and self-returning type membrane bioreactor. An anoxia area, an aerobic area and an equipment room are sequentially arranged in a bioreactor housing from left to right, a water inlet pipeline is arranged in the anoxia area, and an aeration mixing pipeline of the anoxia area is arranged at the bottom of the anoxia area; the anoxia area is communicated with the aerobic area, an aerator of the aerobic area is arranged at the bottom of the aerobic area, a membrane device is arranged at the tail end of the aerobic area, and an aeration scouring pipeline of the membrane device is arranged below the membrane device. By means of the aeration scouring pipeline of the membrane device, sewage in the aerobic area continuously scours the membrane devicefrom bottom to top, under the filtering action of the membrane device, the sewage is filtered, and the filtered clean water is discharged through a water outlet suction pump from a water outlet of themembrane device; vertical baffle plates are arranged on the edge of the periphery of the membrane device, a gathering area is enclosed by the baffle plates for collecting aeration sewage welling upward in the membrane device, and the area enclosed by the baffle plates is communicated with the water inlet pipeline of the anoxia area through at least one returning pipeline.

Description

technical field [0001] The invention belongs to the technical field of environmental protection sewage treatment, and in particular relates to a low-energy self-reflux membrane bioreactor. It is mainly used in integrated sewage treatment equipment, and the most important market is the field of sewage treatment in villages and towns in my country. At the same time, the main working principle and specific structure can also be applied to a large-scale MBR membrane biological reaction system. Background technique [0002] At present, the rural layout of our country is scattered, and the sewage pipe network is difficult to lay, so centralized treatment cannot be carried out. In recent years, my country's village and town sewage treatment has developed rapidly. Most of them use integrated sewage treatment equipment, and when the scale is large, multiple series and parallel connections are used. [0003] See attached figure 1 , The interior of traditional integrated sewage trea...

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Problems solved by technology

[0004] This kind of traditional integrated sewage treatment equipment needs to return the sewage in the aerobic zone to the anoxic zone through a special return system, because the return system includes a return pump, a lengthy return pipeline and corresponding controls part, resulting in high investment, high energy consumption, complex system, and high equipment failure rate

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