Water circulation device for biological rotating disc

Abstract

The invention relates to the technical field of sewage treatment, and discloses a water circulation device for a biological rotating disc. The water circulation device comprises a purification tank, wherein one side of the purification tank is provided with a water inlet, the middle portion of the inner cavity of the purification tank is movably provided with a rotating shaft, and the outer portion of the rotating shaft is fixedly sleeved with a disc body. According to the invention, by arranging water circulation teeth, the amount of sewage which can enter a water inlet in a unit area is limited, so that the situation that an organic load borne by a biological membrane is too high due to the fact that the amount of sewage making contact with the surface of the existing biological membrane is too large is avoided; by arranging the structure of a partition plate, a spring and a water pressure plate in the inner cavity of the water circulation teeth, the stored sewage flows out from the separation position of the water pressure plate and the partition plate and falls to the surface of the biological membrane, and water source supply is conducted on the biological membrane exposed out of the sewage surface in time; and by arranging a flow splitting plate, sewage flow is divided into small water flow, so that water impact force is reduced, then the hidden danger that the biological membrane falls off is avoided, and a large amount of external air is effectively prevented from permeating.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a biological turntable water circulation device. Background technique [0002] Biological turntable is a kind of technical equipment that uses biofilm for sewage treatment. Its mechanism of purifying organic matter is basically the same as that of biofilter, but its structure is different from that of biofilter. Biological turntable consists of a water tank and a turntable partially submerged in a sewage pool. The structural composition, including rotating disk, contact reaction tank, driving device and rotating shaft, etc., is widely used in sewage treatment because of its convenient installation, simple operation and excellent purification effect. [0003] When the existing biological turntable is rotating, in order to prevent the microorganisms on the biofilm on the edge of the disc from being washed away, the existing biological turntable generally rotates at a low s...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing biological turntable proposed in the background technology, the present invention provides a water circulation device for a biological turntable, which can realize automatic water circulation with a turntable, ensure water supply, avoid drying up of microbial colonies, and effectively control the biological turntable. Water volume, avoiding the advantages of overloading the organic load, solving the technical problems raised in the background art above

Images