Novel sand settling tank for quick settling of agricultural sewage

Abstract

The invention discloses a novel sand settling tank for quick settling of agricultural sewage. The novel sand settling tank comprises a sand settling tank body which is of a rectangular frame structure, two volume regulating are arranged inside the sand settling tank body and distributed symmetrically according to the center of the same, a clamping connection groove is formed in the surface of thevolume regulating at the left end, is of a rectangular column structure and is matched with a clamping connection block and fixedly connected on the surface of the volume regulating at the right end,a lifting retaining plate is arranged between the two volume regulating and is of a rectangular plate structure, and a volume regulating is arranged inside the sand settling tank body and cooperates with a cylinder to move leftwards and backwards so as to regulate volume inside the sand settling tank body. Difficulty in excavating due to the fact that precipitate is close to the bottom of the sandsettling tank when there is little sewage is avoided.

Description

technical field [0001] The invention relates to the technical field of grit chambers, in particular to a novel grit chamber for rapid precipitation of agricultural sewage. Background technique [0002] Sewage will inevitably be mixed with mud and sand in the process of migration, flow and collection. If the sand in the sewage is not pre-sedimented and separated, it will affect the operation of subsequent treatment equipment. The most important thing is to wear the machine pump, block the pipe network, interfere or even destroy In the biochemical treatment process, the grit chamber is mainly used to remove sand particles with a particle size greater than 0.2mm and a density greater than 2.65t / m3 in sewage, so as to protect pipelines, valves and other facilities from wear and blockage. Its working principle is gravity separation Therefore, the flow rate of the water in the grit chamber should be controlled so that the inorganic particles with a large specific gravity sink, and...

AI Technical Summary

Problems solved by technology

[0003] 1. The internal space of the grit chamber is fixed and cannot be adjusted, resulting in slow sedimentation after a small amount of sewage is discharged, and the low thickness of the sedimented silt is not convenient for dredging machinery to work;

[0004] 2. The traditional grit chamber lacks a top isolation device, which causes fallen leaves or other objects in the air to fall into the grit chamber to cause secondary treatment and reduce the sedimentation efficiency

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