Efficient up-flow inclined plate sedimentation tank

Abstract

The invention discloses an efficient up-flow inclined plate sedimentation tank, which sequentially comprises a sludge hopper, a water distribution area, an inclined plate sedimentation area and a clear water area from bottom to top, wherein the sludge hopper is sequentially provided with a sludge return pipe, a sludge return air pipe, a sludge discharging pipe, two water distribution pipes and a set of backwashing system from bottom to top, and the backwashing system is horizontally placed above the sludge return pipe; a plurality of inclined plates which are arranged in parallel at intervals are arranged in the inclined plate area, and a sewage overflow pipe and an air weir are arranged in the clear water area; the sewage overflow pipe can be communicated with a regulating pond or sump placed in front, and the air weir is positioned between the inclined plate area and a design water level, and comprises four water inlet pipes, an air inlet (outlet) and a total water outlet pipe. The used backwashing system is a secondary sedimentation tank for high impurity wastewater and sewage treatment in the sedimentation tank, and the air weir is used as a water outlet system of the sedimentation tank to prevent scum from flowing out along with water flow, and avoid the short flow and the like caused by poor construction used in the traditional effluent weir.

Description

technical field [0001] The invention relates to a water treatment process equipment, in particular to a high-efficiency ascending-flow counterflow inclined plate sedimentation tank. Background technique [0002] There are many types of sedimentation tanks used for sewage treatment. From the sewage flow mode, they can be divided into flat flow, hard flow and radial flow sedimentation tanks. However, this kind of sedimentation tank occupies a large area and the sedimentation efficiency is not high. The inclined plate sedimentation tank has the advantages of high removal efficiency, short residence time, and small footprint, and its surface hydraulic load is twice that of ordinary sedimentation tanks. The traditional sloping plate sedimentation tank is often used in the reconstruction of the original sewage plant to expand the treatment capacity. However, the sloping plate in the traditional sloping plate sedimentation tank will breed microorganisms, which is not effective in ...

AI Technical Summary

Problems solved by technology

However, the inclined plate in the traditional inclined plate sedimentation tank will breed microorganisms, which is not effective in separating high-concentration mud and water, and the effluent quality is unstable, so it is not suitable for use as a secondary settling tank.

In addition, the scum of the traditional outlet triangular weir flows out with the water flow, and problems such as short flow are prone to occur in the case of poor construction

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