Grit chamber for wastewater treatment plant, capable of preventing sedimentation of organic material

Abstract

A grit chamber for a wastewater treatment plant. A vertical floodgate is installed on a partitioning wall and is driven in a vertical direction to be opened downwardly from a top toward a bottom. A floodgate driving motor is coupled to one end of the vertical floodgate to directly drive the vertical floodgate. An inflow amount measurement means functions to stepwisely measure a flow amount of wastewater which passes through a wastewater tank. A control section is connected to the floodgate driving motor and the inflow amount measurement means to control the floodgate driving motor in response to a measurement result of the inflow amount measurement means. A wastewater level is adjusted within a predetermined range through operation of the vertical floodgate to maintain a constant flow velocity of wastewater which passes through a sand sedimentation zone, thereby preventing organic material which is contained in the wastewater and is other than sand, from sedimenting.

Description

technical field [0001] The present invention generally relates to a grit chamber installed in a sewage treatment facility to settle and remove grit contained in sewage, and more particularly, to a device that, even when the sewage passing through the grit chamber When the volume fluctuates sharply, the device allows the flow rate of the sewage to always remain stable, thereby preventing the sedimentation of organic materials, improving the sand removal efficiency, and ensuring the normal use of the grit chamber. Background technique [0002] Generally speaking, a mechanical grit chamber is installed at the entrance of traditional small and medium-sized sewage treatment equipment, and the grit chamber includes a rectangular sewage tank made of steel. When the sewage introduced into the cesspool flows to be discharged, sand particles not smaller than a predetermined particle size settle due to the flow velocity of the sewage flowing in the cesspool, and organic materials and s...

AI Technical Summary

Problems solved by technology

Furthermore, at the point of recycling, the reliable operation of the grit chamber cannot be guaranteed as the mixture may be rejected as unsuitable for recycling

That is to say, since the grit chamber is not in operation, it will inevitably reduce the sewage treatment efficiency of the downstream sewage treatment equipment

Since these problems also exist in civil grit chambers, it should be understood that most grit chambers used in sewage treatment plants are not functioning properly

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