Efficient multilayer radial-flow sedimentation tank

Abstract

The invention discloses an efficient multilayer radial-flow sedimentation tank. The efficient multilayer radial-flow sedimentation tank comprises a shell, wherein a bottom face of the shell is a conical surface, inclined partition plates are arranged in the shell so as to partition the shell into a Chinese-character-'chuan'-shaped sedimentation tank, a circular-ring-shaped water tank is arranged at the top of the shell, a circular-ring-shaped partition plate is arranged in the water tank so as to divide the water tank into an inlet water tank and an outlet water tank, the inlet water tank communicates with a water inlet pipe, the water inlet pipe communicates with the Chinese-character-'chuan'-shaped sedimentation tank, a drive sludge scraper is mounted on the shell and is connected with a drive rotating shaft, the drive rotating shaft is connected with a sludge scraping plate through a bracket, and a sludge storage bucket which is connected with the bottom face of the shell is arranged below the drive rotating shaft and is provided with a sludge discharging opening. According to the efficient multilayer radial-flow sedimentation tank, a tank body is divided into three sedimentation areas, i.e., an upper sedimentation area, a middle sedimentation area and a lower sedimentation area, inlet water directly enters the two sedimentation areas, i.e., the middle and lower sedimentation areas, and water flow rises to the upper sedimentation area after the inlet water is subjected to sedimentation, so that phenomena such as short flow, obvious dead water regions, and the like of ordinary sedimentation tanks are avoided.

Description

technical field [0001] The invention relates to a high-efficiency multi-layer radial flow sedimentation tank, which belongs to the field of sewage treatment. Background technique [0002] Sedimentation treatment is the basic technological link in the sewage treatment process. It uses the density difference between suspended solids and water to separate suspended solids, and its operation status directly affects the quality of effluent water. The commonly used sedimentation structures after sewage biochemical treatment include advection sedimentation tanks, vertical flow sedimentation tanks and ordinary radial flow sedimentation tanks. At present, large and medium-sized sewage plants mostly use ordinary radial-flow sedimentation tanks and advection-flow sedimentation tanks for mud-water separation. In recent years, double-layer advection sedimentation tanks and three-layer advection sedimentation tanks have appeared, which save land occupation and investment. However, this t...

AI Technical Summary

Problems solved by technology

The advection sedimentation tank occupies a large area and has low sedimentation efficiency

In order to save land and improve sedimentation efficiency, many domestic scholars have conducted research on the application of multi-layer sedimentation tanks. Due to the failure to properly solve the problems of the tank structure, the flow state of the water in the tank, and the difficulty of sludge discharge, the system is inconvenient to operate and sedimentation Unstable effects and other phenomena have led to its failure to be widely used

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