Cylindrical integrated biological treater for domestic sewage

Abstract

The invention relates to the environmental protection technology, and particularly relates to a domestic sewage treatment apparatus. The invention aims to provide a domestic sewage treatment apparatus which is stable, high in efficiency and low in cost. A cylindrical integrated biological treater for domestic sewage comprises a cylinder, an inner tube is arranged in the cylinder, and an inner cavity of the inner tube forms a regulating-hydrolysis cavity; a space between the inner tube and the cylinder is sequentially partitioned along the circumferential direction so as to form a primary aerobic cavity, a primary anoxic cavity, a secondary aerobic cavity, a secondary anoxic cavity and a settling cavity which are independent; the regulating-hydrolysis cavity is connected with a water inlet pipe, the bottom of the primary aerobic cavity is interconnected with the bottom of the primary anoxic cavity, and the bottom of the secondary aerobic cavity is interconnected with the bottom of the secondary anoxic cavity; the upper parts of the regulating-hydrolysis cavity, the primary anoxic cavity, the secondary aerobic cavity and the secondary anoxic cavity are respectively provided with a gap leading to a downstream cavity; the upper part of the settling cavity is provided with a water outlet and a mud discharge device; and an aeration device is respectively arranged in the primary aerobic cavity and the secondary aerobic cavity, and a stirring device is respectively arranged in the primary anoxic cavity and the secondary anoxic cavity.

Description

technical field [0001] The invention relates to environmental protection technology, in particular to domestic sewage treatment equipment. Background technique [0002] Human domestic sewage is one of the main sources of water pollution. Mainly feces and washing sewage. The amount of domestic sewage discharged by each person in the city is 150-400L per day, which is closely related to the living standard. Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugar and fatty protein; it also often contains pathogenic bacteria, viruses and parasite eggs; inorganic salts such as chloride, sulfate, phosphate, bicarbonate and sodium, Potassium, calcium, magnesium, etc. The general feature is high nitrogen, sulfur and phosphorus content, and under the action of anaerobic bacteria, it is easy to generate odorous substances. [0003] The development of existing domestic sewage treatment technology started relatively late, and the main process rout...

AI Technical Summary

Problems solved by technology

However, the volume and integration of the equipment are still not good enough, and the sludge discharge is troublesome

Or the cylindrical processing device disclosed in CN101391834A, this device is a cylindrical shape with two layers inside and outside, and the integration is good, but the internal structure is too complicated, there are many partition ladders, poor running stability, and very troublesome to clean and maintain

CN201240939Y also discloses a cylindrical processing device, but the process route is simple, the device size is small, and there is no expansion capability, so the processing capacity is small and the practicability is poor

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