Efficient aeration grit chamber

Abstract

The invention discloses a high-efficiency aeration grit chamber, which comprises a tank body, one side of the tank body is provided with a water inlet, and the other side is provided with a water outlet; There is an aeration device and a stirring device on the top; the aeration device includes a base and an aeration pipeline; the base is fixed in the sand collection tank, and a positioning plate is arranged horizontally on the top of the base; The air intake main pipe and the lower end is located in the aeration pipe in the middle and lower part of the pool body. There are multiple aeration holes on the aeration pipe; the air intake main pipe is detachable and fixed on the pool wall, and a limit ball is fixed at the bottom of the aeration pipe; positioning A ball groove is arranged on the upper surface of the plate, and the lower end of the limit ball can abut against the ball groove; the stirring device includes a stirrer located between a plurality of aeration pipes and a stirring drive motor. The invention utilizes stirring and aeration to form a swirling flow to help the inorganic gravel and organic particles to be separated, reduce the content of organic matter in the sand settling, and at the same time facilitate the subsequent decomposition of the organic matter.

Description

technical field [0001] The invention is designed in the technical field of sewage treatment, in particular to a high-efficiency aeration sand chamber for removing heavy particles with larger particle size such as sand particles in urban sewage treatment. Background technique [0002] The grit chamber is generally set before the pumping station or the primary sedimentation tank, and is used for the precipitation and removal of the heavy particles with larger particle size, that is, "sand". In urban sewage, the relatively dense particulate matter that is easy to precipitate and separate mainly includes inorganic sand, gravel and organic particles, such as bone strips. Seeds, etc., may also adhere to the surface of organic sticky substances. If the sand in the sewage enters the subsequent treatment unit, it will affect the operation of the subsequent treatment unit, causing various hazards such as excessive wear of the transfer pump and sludge dewatering equipment. [0003]...

AI Technical Summary

Problems solved by technology

If the sand in the sewage enters the follow-up treatment unit, it will affect the operation of the follow-up treatment unit, causing various hazards such as excessive wear of the delivery pump and sludge dewatering equipment

[0003] There are about 10% organic matter in the grit grains of ordinary advection grit chambers, and the interception effect on the organic matter-coated sand grains is not good. The grit is easy to rot and smell, which will increase the difficulty of subsequent treatment.

Images