Sewage solid-liquid separation method

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage solid-liquid separation method which comprises the following steps: step 1, mixed sewage with solid garbage and floccules is dischargedinto a sewage pool; 2, the mixed sewage is filtered through a material stirring and conveying mechanism, the solid garbage and the floccules are separated from the mixed sewage through the material stirring and conveying mechanism, and the filtered sewage enters a downstream reaction tank; 3, the solid garbage is conveyed to a solid garbage recycling mechanismby the material stirring and conveying mechanism, and the floccules are adsorbed on a conveying mesh belt of the material stirring and conveying mechanism for continuous conveying; and 4, the floccules enter a floccule recovery mechanism along with the conveying mesh belt, and the floccule recovery mechanism cleans the conveying mesh belt and recovers the floccules adsorbed on the conveying meshbelt. The sewage treatment system provided by the invention can be used for continuously and efficiently intercepting solid wastes with various volumes at one time in the early stage without arranginga plurality of groups of grids, so that the equipment cost and the occupied space are reduced.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage solid-liquid separation method. Background technique [0002] In the sewage treatment process, the grid is generally used for solid-liquid separation. However, the types of solid waste in the sewage are cumbersome, such as general solid waste with a certain volume and small-volume floc waste suspended in water. Two types of grids with different thicknesses must be used for the separation of solid waste. This is because the mesh of the coarse grid is too large to intercept fine flocs, while the surface of the fine grid is smooth and difficult to attach large volumes of solid waste. In the existing technology, in order to fully separate the solid waste from the sewage, two sets of grille equipment must be used, which takes up a lot of space and high equipment cost; in addition, the grabbing hooks on the grille in the prior art are generally fixed struc...

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Problems solved by technology

[0002] In the sewage treatment process, the grid is generally used for solid-liquid separation. However, the types of solid waste in the sewage are cumbersome, such as general solid waste with a certain volume and small-volume floc waste suspended in water. Two types of grids with different thicknesses must be used for the separation of solid waste. This is because the mesh of the coarse grid is too large to intercept fine flocs, while the surface of the fine grid is smooth and difficult to attach large volumes of solid waste. In the existing technology, in order to fully separate the solid waste from the sewage, two sets of grille equipment must be used, which takes up a lot of space and high equipment cost; in addition, the grabbing hooks on the grille in the prior art are generally fixed structures, and it is not suitable for garbage to be attached. Falling off, it is easy to accumulate on the grille, and even block the grille and hinder the operation of the grille

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