Liquid level adjusting structure of circular secondary sedimentation tank

Abstract

The invention discloses a liquid level adjusting structure of a circular secondary sedimentation tank. The structure comprises a water outlet channel foundation, a water outlet channel comprises the water outlet channel foundation, two sets of concrete blocking seats and a formed flow channel, a water inlet is formed in the middle of one end of the flow channel, a limiting groove is transversely formed in the bottom of the flow channel, weir plates are symmetrically arranged in the limiting groove, an adjusting structure is arranged between the two groups of weir plates, the adjusting structure comprises a seamless steel pipe, an internal thread cylinder and two groups of long screws, the long screws are symmetrically distributed, and one end of each long screw is welded on the inclined end part of the corresponding weir plate. According to the liquid level adjusting structure of the circular secondary sedimentation tank, the seamless steel pipe is rotated, and the long screw synchronously moves oppositely or reversely, so that the two groups of weir plates are driven to move, the water outlet area and height are changed, the normal operation liquid level is ensured, the oxygen enrichment phenomenon of sewage is avoided, the problem that the water amount is too large or too small is solved, the structure is suitable for different working conditions, and a better use prospect is brought.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a liquid level adjustment structure of a circular secondary sedimentation tank. Background technique [0002] Activated sludge process is a commonly used technical process in sewage treatment, mainly composed of two parts: biological reaction tank and secondary sedimentation tank. In the biological reaction tank, the sewage and microorganisms are in a completely mixed state, and the pollutants in the sewage are degraded under the action of microorganisms. After entering the secondary settling tank, the microorganisms and the purified sewage are separated under the action of gravity. The microorganisms are at the bottom, after purification The sewage is in the upper part, and the secondary settling tank generally adopts a circular pool shape with a mud-scraping bridge. The mud-scraping bridge rotates continuously to discharge the microorganisms at the bottom of the second...

AI Technical Summary

Problems solved by technology

In the biological reaction tank, the sewage and microorganisms are in a completely mixed state, and the pollutants in the sewage are degraded under the action of microorganisms. After entering the secondary sedimentation tank, the microorganisms and the purified sewage are separated under the action of gravity. The microorganisms are at the bottom, after purification The sewage is in the upper part, and the secondary settling tank generally adopts a circular pool shape with a mud-scraping bridge. The mud-scraping bridge rotates continuously to discharge the microorganisms at the bottom of the secondary settling tank; the purified sewage enters the outlet channel through the overflow. It flows out of the secondary settling tank; after the effluent of the traditional circular secondary settling tank passes through the triangular weir or arc-shaped weir, the sewage enters the next section. The height of the weir plate is fixed when it is installed and cannot be adjusted. When the water volume is too large or too small, it cannot be adjusted. , Oxygen-enriched sewage will occur, which will increase the cost and difficulty of sewage treatment in subsequent sections. Therefore, we propose a circular secondary sedimentation tank liquid level adjustment structure

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