Shallow sedimentation tank system

Abstract

The invention discloses a shallow sedimentation tank system, relates to a water treatment sedimentation tank system, and in particular relates to a vertical sedimentation tank system. The shallow sedimentation tank system comprises a sedimentation tank, a vertical post arranged in the center of the sedimentation tank, an inlet branch, a drainage channel, a scraper, a sludge collecting trough and a sludge sucking pipe, wherein the lower part of the vertical post is provided with 1-8 flooding water distribution pipes, and the flooding water distribution pipes and the inlet branch form a flooding water distribution diversion system; the flooding water distribution pipes are parallel to the horizontal plane, and provided with a plurality of water distribution holes; and the sludge collection trough is arranged below the water distribution pipes, the scraper and the sludge collecting trough are communicated with the sludge sucking pipe, and the sludge collecting trough and the sludge sucking pipe form a sludge extraction system. The shallow sedimentation tank system disclosed in the invention has a stable layer bottom, so that wastewater can be kept at a relative static state, and facilitates sedimentation of suspended matters; the depth of the sedimentation tank can be reduced by about 1.5m, thus remarkably reducing the earth excavation volume of the sedimentation tank; and meanwhile, since the depth of the sedimentation tank is lowered, the material consumption reduction is facilitated, project installation is convenient, and fabrication cost and operation cost are reduced.

Description

technical field [0001] The invention relates to a water treatment sedimentation tank system, in particular to a vertical flow sedimentation tank system. Background technique [0002] Suspended substances in sewage can be removed by sedimentation by gravity. This physical process is simple and easy, and it is one of the important technologies for sewage treatment. The traditional sedimentation tank adopts the method of entering water at the center of the bottom of the tank and leaving water around the top of the tank. The water body has horizontal and vertical flows. The water body in the sedimentation tank is in a state of motion, which leads to an increase in the synthesis rate of suspended particles, which is not conducive to suspended solids. Stable downward sedimentation along the vertical direction, the sedimentation efficiency is low. Due to the simultaneous existence of the horizontal component velocity and the vertical component velocity, in order to settle the susp...

AI Technical Summary

Problems solved by technology

Therefore, the existing sedimentation tanks generally have a depth of more than 4 to 6 meters. The excavation volume is large, the consumables are large, and the foundation requirements are high, so the construction costs are high.

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