Combined aeration moving bed bio-membrane reactor

Abstract

The invention discloses a combined aeration moving bed bio-membrane reactor. The combined aeration moving bed bio-membrane reactor comprises a reactor main body with a manhole in one side of the top end, the side wall of the reactor main body is provided with a water inlet pipe and a water outlet pipe which are communicated with an inner cavity of the reactor main body, a circulating guide plate is arranged in the reactor main body, a perforated pipe aeration system is arranged at one side, close to the bottom end in the reactor main body, of the circulating guide plate, a micropore aeration system is arranged above the perforated pipe aeration system, and a back flush system for preventing suspended filler from floating above a liquid level in the reactor is arranged at the top in the reactor main body. On the basis of a traditional moving bio-membrane reactor, the aeration system is improved and upgraded, and the back flush system is added. By virtue of a simple pipeline system, the problems that suspended filler in a traditional moving bed bio-membrane reactor is deposited on the bottom of a pool and float upwards along a wall and that dissolved oxygen is not enough are solved, and the actual application of the moving bed bio-membrane reactor is further perfected.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and relates to a sewage treatment device, in particular to a composite aeration moving bed biofilm reactor. Background technique [0002] The moving bed biofilm reactor has the advantages of both the traditional fluidized bed and the biological contact oxidation method, and is a new and efficient sewage treatment method. It has the advantages of small footprint, high organic load, strong impact load resistance, stable effluent quality, simple operation, and no clogging. Although the internal filler is expensive, the economic benefits it brings are sufficient to compensate. [0003] Due to the above advantages, the moving bed biofilm reactor is favored by sewage treatment workers, but its large-scale application is also limited by the following problems. First, the density of the internal suspended filler is similar to that of water, and there will be frequent floating of the suspended filler; sec...

AI Technical Summary

Problems solved by technology

It has the advantages of small footprint, high organic load, strong impact load resistance, stable effluent quality, simple operation, and no clogging. Although the internal filler is expensive, the economic benefits it brings are sufficient to compensate

[0003] Due to the above advantages, the moving bed biofilm reactor is favored by sewage treatment workers, but its large-scale application is also limited by the following problems

First, the density of the internal suspended filler is similar to that of water, and there will be frequent floating of the suspended filler; second, the energy consumption is large, the oxygenation capacity is poor, and the oxygen utilization rate is not high; third, the traditional process will cause part of the filler sedimentation tank bottom or there are dead angles, making the space utilization rate in the pool low

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