Vertical flow sedimentation tank

Abstract

The invention relates to a vertical flow sedimentation tank which comprises a pool body, a water inlet central cylinder, a bell mouth, a reflection / separation integrated plate and a gas-solid separator, wherein the water inlet central cylinder is disposed at the center of the upper end of the pool body and used for allowing muddy water to vertically flow into; the bell mouth communicates with thelower end of the water inlet central cylinder, and an open mouth is formed downwards; the reflection / separation integrated plate is of an umbrella structure; the top of the umbrella structure is provided with an air guiding pipe; the muddy water flows out downwards from the outer side of the umbrella structure after passing through the bell mouth; the gas-solid separator is disposed below the reflection / separation integrated plate and used for receiving the muddy water flowed from the outer side of the umbrella structure; the gas-solid separator comprises a plurality of sloping plates; and thesloping plates extend obliquely downwards from the inner wall of the pool body. By adopting the vertical flow sedimentation tank, the sedimentation effect is further improved on the basis of ensuringthe original sedimentation effect of the vertical flow sedimentation tank, especially that a good inhibition effect on denitrification fluid mud and anaerobic fluid mud which easy occur in a traditional vertical flow sedimentation tank is achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a vertical flow sedimentation tank. Background technique [0002] Sedimentation tank is a structure that removes suspended matter in water through sedimentation. Sedimentation tank is widely used in wastewater treatment. It has many types, which can be divided into three types: advection type, vertical flow type and radial flow type according to the direction of water flow in the pool. [0003] Among them, the muddy water in the traditional vertical flow sedimentation tank is discharged into the tank from top to bottom by the central cylinder in the center of the sedimentation tank. The outlet of the central cylinder is equipped with an umbrella-shaped baffle to make the muddy water evenly distributed in the tank, and then slowly along the entire section of the tank. rise. Suspended solids settle under the action of gravity into the conical sludge zone at the bottom of...

AI Technical Summary

Problems solved by technology

However, this type of sedimentation tank has a large depth and a conical bottom. The sludge is attached to the mud bucket, and problems such as denitrification floating sludge and anaerobic floating sludge are prone to occur, which in turn increases the difficulty of operation and management and reduces the effect of effluent sedimentation. Poor, higher requirements for the normal operation of follow-up equipment, increasing labor costs

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