Efficient micro-sand circulating sedimentation device and method thereof

Abstract

The invention discloses an efficient micro-sand circulating precipitation device and relates to the technical field of sewage treatment. Which comprises a flocculation reaction system, a curing reaction zone, an efficient precipitator, a flocculant dosing device and a micro sand circulating system, the flocculation reaction system is arranged in the efficient precipitator and comprises an inner barrel, a stirring shaft is rotatably arranged in the inner barrel, a mixed reaction zone is arranged at the upper end in the flocculation reaction system, and the flocculant dosing device is arranged in the mixed reaction zone. The outer side of the inner barrel body is connected with a sewage pipe, the upper end of the sewage pipe is provided with a static mixer and a check valve, on the basis of the traditional flocculation and sedimentation tank theory, micro sand is added to accelerate flocculation agglomeration and sedimentation, the retention time of the sedimentation tank is shortened, rapid solid-liquid separation is achieved, the device is integrally designed, the occupied area and energy consumption are saved, and the device is suitable for large-scale popularization and application. The device consists of a flocculation reaction system, a curing reaction area, an efficient precipitator, a flocculating agent dosing device, a macromolecular coagulant aid dosing device, a rotational flow mud-sand separation device, a micro sand circulation supplementing device and a PLC (Programmable Logic Controller) electrical control system.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, and more specifically, the invention relates to a high-efficiency micro-sand circulating sedimentation device and a method thereof. Background technique [0002] In recent years, with the continuous upgrading of river and lake ecological management, sewage treatment and other technologies, the solid-liquid separation precipitation purification process technology is particularly important. The traditional precipitation separation process technology has the disadvantages of large area, long residence time, long process flow, The disadvantages such as poor separation effect are especially insufficient for the precipitation separation and purification treatment technology of high algae and high turbidity water, high algae and low turbidity water, low temperature and low turbidity water, and slightly polluted water in river and lake treatment. SUMMARY OF THE INVENTION [0003] The invention...

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Problems solved by technology

[0003] The present invention aims to solve the disadvantages of the traditional sedimentation and separation technology in the prior art, such as large floor area, long residence time, long process flow, poor separation effect, etc. The technical problem that the sedimentation, separation and purification treatment technology of turbid water, low temperature and low turbidity water, and slightly polluted water is particularly insufficient

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