Sewage treatment plant

Abstract

The invention provides a sewage treatment plant which comprises a shell, wherein one side of the shell is provided with a water inlet, and the other side is provided with a water outlet; the inside of the shell is sequentially provided with a first partition, a second partition, a third partition and a fourth partition; the first partition is positioned on the side of the water inlet, and connected with the top wall and bottom wall of the shell; the lower part of the first partition is provided with a water through hole; the second partition is positioned on the top wall of the shell; the third partition is positioned on the bottom wall of the shell; and the fourth partition is positioned on the top wall of the shell. The sewage treatment plant is provided with the first partition, second partition, third partition and fourth partition, so that the four partitions are used for separating the shell; the sewage is treated by sequentially passing through the four partitions; and the four partitions reasonably divides the limited space in the shell, thereby maximally utilizing the area, reducing the occupied area and saving the cost.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a sewage treatment device. Background technique [0002] Due to the increasingly serious problem of eutrophication in water bodies, the requirements for nitrogen and phosphorus indicators in discharged sewage have become more and more stringent. In the GB18918-2002 "Pollutant Discharge Standards for Urban Sewage Treatment Plants" issued by my country in 2002, the A standard of the first-level standard requires TP to be less than 0.5mg / l, ammonia nitrogen to be less than 5mg / l, and total nitrogen to be less than 15mg / l. Therefore, in the process of sewage treatment, special attention should be paid to the removal of nutrients such as nitrogen and phosphorus. [0003] The traditional membrane bioreactor process integrates the aeration tank and the sedimentation tank, and the concentration of microorganisms in the reactor is greatly increased through membrane interceptio...

AI Technical Summary

Problems solved by technology

At present, most of the membrane bioreactor technologies that have been disclosed are comprehensive processing devices, and the processing devices involved are all independent and separated structures. Not only the main equipment is too large, the system is complicated, but also the manufacturing cost is high and the operating cost is also low. High, obviously not suitable for domestic sewage treatment projects in small communities or rural villages and towns

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