Flocculation and sedimentation device for sewage

Abstract

The invention discloses a flocculation and sedimentation device for sewage. The flocculation and sedimentation device comprises a pool body, a precipitation device and a flocculation device, wherein the precipitation device comprises fixed rods, connecting rods and sloping plates, wherein the front ends and the rear ends of the upper sides of the sloping plates are separately and movably connected with the fixed rods by first rotating shafts; the front ends and the rear ends of the lower sides of the sloping plates are separately and movably connected with the connecting rods by second rotating shafts; a water outlet groove is formed in the upper end of the pool body and consists of two sawtoothed water outlet side plates and one smooth water outlet base plate; the flocculation device comprises a first umbrella skeleton, a second umbrella skeleton, screen cloth and a driving oil cylinder; an output shaft of the driving oil cylinder is fixedly connected with a supporting rod; the first umbrella skeleton is arranged at the top end of the supporting rod; the periphery of the first umbrella skeleton is attached and covered with the screen cloth; the second umbrella skeleton is arranged at the lower end of the first umbrella skeleton; a supporting sleeve is arranged outside the supporting rod in a sleeving manner and is also arranged in a blow-off pipe. The flocculation and sedimentation device disclosed by the invention has the advantages that quick precipitation, blockage prevention and efficient pollution discharge are realized; secondary diffusion of flocculates is effectively prevented.

Description

technical field [0001] The invention relates to a sedimentation device, in particular to a sewage flocculation sedimentation device. Background technique [0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements of a certain water body for drainage or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people. According to the classification of sewage sources, sewage treatment is generally divided into production sewage treatment and domestic sewage treatment. Coagulation sedimentation tank is the most economical and efficient process for treating suspended solids at home and abroad. Adding flocculant in the sedimentation tank will not be able to effectively and fully flocculate, which will cause waste of resources...

AI Technical Summary

Problems solved by technology

Adding flocculant in the sedimentation tank will not be able to effectively and fully flocculate, which will cause waste of resources and unsatisfactory flocculation and sedimentation effect. Using a pump to directly pump out the supernatant will stir the water body, causing the sediment at the bottom to turn up, forming secondary pollution, and there is flocculation. Defects such as incomplete discharge

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