Multi-filtration sewage treatment efficient sedimentation tank

Abstract

The invention discloses a multi-filtration sewage treatment efficient sedimentation tank. The sedimentation tank comprises a tank body, a sludge filtration part, a filtration pressure applying part, amotor, a water feeding pipeline, a sewage discharge assembly and a water discharge tank, wherein the tank body is used for accommodating sewage, the sludge filtration part is used for filtering sewage; the filtration pressure applying part is used for extruding the sewage in the tank body, and the sewage can be extruded from left and right sides and the upper side in reciprocating manner to accelerate the drainage speed of filtered water; the motor is used for providing power for extruding the sewage; the water feeding pipeline is used for supplying the sewage into the tank body, the sewage discharge assembly is used for discharging sludge deposited at the bottom of the tank body, and the water discharge tank is used for further precipitating the water discharged from the tank body. An original passive sedimentation method depending on gravity is changed, sedimentation of sludge and discharging of clear water are accelerated through continuous reciprocating extrusion of the filtrationpressure applying part, and the sludge can be rapidly collected and deposited at the bottom of the tank body and then pumped away by the sewage discharge assembly.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sedimentation tank for sewage treatment. Background technique [0002] Sedimentation tanks are often used in foundation pit engineering to settle the accumulated water on the site. Its function is to settle the sludge and sand particles in the water, so that the water can be purified to a certain extent, and then discharged into the municipal drainage system. [0003] In the current sedimentation tank, sludge and sand are settled naturally by gravity, which belongs to passive settlement. Due to the natural settlement by gravity, the settlement speed is slow and the settlement time is long, and the discharged clear water is also discharged naturally without any power, so the drainage speed is relatively slow. [0004] At present, this kind of passive sedimentation tank is a very common sedimentation tank, which is often seen in construction sites of various tunnels and subways. ...

AI Technical Summary

Problems solved by technology

Due to the natural settlement by gravity, the settlement speed is slow and the settlement time is long, and the discharged clear water is also discharged naturally without any power, so the drainage speed is relatively slow

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