Sewage pretreatment device

Abstract

A sewage pretreatment device includes a device body composed of a residue removal chamber, and deposition phosphorus removal chamber, and a hydrolysis regulation chamber. A gap is formed between the bottom of a first baffle and the bottom of the device body and another gap is formed between the bottom of a second baffle and the bottom of the device body. A flow guide plate is disposed between thedeposition phosphorus removal chamber and the second baffle. Two sides of the flow guide plate are respectively fixed to a side wall of the device body and a side wall of the first baffle. The bottomof the flow guide plate is fixed to the bottom of the device body. The upper part of the flow guide plate is lower than the upper parts of the first and the second baffles. A residue removal basket isfixedly arranged in the residue removal chamber. A sloping plate zone is arranged in the deposition phosphorus removal chamber and is provided with an electrolysis phosphorus removal apparatus. A plurality layers of flexible expanded packs are arranged in the hydrolysis regulation chamber. Compared with the prior art, the device integrates functions of residue removal, sand removal, phosphorus removal and hydrolysis regulation. The device is high in treatment efficiency, is easy to operate and manage, and is small in occupied area.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to sewage pretreatment equipment. Background technique [0002] With the continuous development of urbanization in our country, a large amount of sewage has been brought, which not only pollutes water sources for urban residents, but also destroys the surrounding environment of cities and towns. Therefore, the treatment of sewage has become an urgent problem for people to solve. The prevention of sewage The treatment is set according to the water quality requirements of the subsequent treatment process before the sewage enters the traditional sedimentation and biological treatment. The existing sewage treatment process is mainly to filter the sewage through coarse and fine grids, sand filters or screens, and then enter the grit chamber or sand-water separator for separation of sand and water. However, in the existing sewage treatment process, after using coarse and fine gr...

AI Technical Summary

Problems solved by technology

However, in the existing sewage treatment process, after using coarse and fine grids or sand filters, it is necessary to enter another equipment grit chamber for separation of sand and water, and the filtration of coarse and fine grids will easily lead to incomplete separation of sand and water, making the filtration The final sewage with sand residues will block other devices when it enters other devices, and the sand filter has a better filtering effect, but the structure of the sand filter is more complicated, not only with a pressure difference control device, an electric control PLC, but also a hydraulic control valve and other controls. device, the cost is higher

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