Air water self cleaning type backflow sludge grating

Abstract

The invention relates to an air water self cleaning type backflow sludge grating, in particular to a grating for removing inorganic particles and entanglements in backflow sludge, and belongs to the technical field of sewage treatment. The air water self cleaning type backflow sludge grating comprises a grating main body, wherein a grid groove is arranged in the grating main body, the upper end of the grating main body is provided with a flange, a screw hole is arranged in the flange, a water inlet pipe is fixedly arranged above the grating main body through a screw rod, the left side of the grating main body is provided with a plurality of side surface water outlets, the bottom of the grating main body is provided with a bottom water outlet and a plurality of aeration heads, the grating main body is fixedly arranged on the ground through a grating main body support frame, sewage enters the grating main body through a grid plate and the grid groove and is discharged out, intercepted grid dregs generate ascending air flow stripping through the aeration heads and are collected, and the grid plate is in the soaking state in the operation process. The whole device is externally connected with a backflow sludge system. The external connection type operation is adopted, on the basis of not changing the original building structure, particles and entanglements in sewage treatment biological segments are effectively removed through external circulation, the biological system activity in the sewage treatment biological segments is improved, the energy consumption is low, the manufacture cost is low, and the maintenance is convenient.

Description

technical field [0001] The invention relates to an air-water self-cleaning return sludge grid, in particular to a sewage treatment grid device for separating particles and floating impurities in the return sludge, and belongs to the technical field of sewage treatment. Background technique [0002] At present, the grids designed and used abroad are mainly used in the sewage pretreatment section to intercept coarse particles and entanglements in the sewage, and to protect the equipment and pipelines of the subsequent process. With the improvement of my country's sewage treatment industry standards, the requirements for the removal of inorganic particles and entanglements in sewage have also increased. Only the removal of some inorganic particles and entanglements in sewage in the pretreatment section can no longer meet the sewage treatment process requirements. There is a need for a method and a grid device that can further remove inert impurities such as inorganic particles a...

AI Technical Summary

Problems solved by technology

With the improvement of my country's sewage treatment industry standards, the requirements for the removal of inorganic particles and entanglements in sewage have also increased. Only the removal of some inorganic particles and entanglements in sewage in the pretreatment section can no longer meet the sewage treatment process requirements. There is a need for a method and a grille device that can further remove inert impurities such as inorganic particles and entanglements in the sewage biological system, but currently there is no method and grille device for removing inorganic particles and entanglements in the sewage biological system

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