Device and method for removing floating objects in sewage through spiral-flow type automatic cleaning and filtration

Abstract

The invention relates to a device and method for removing floating objects in sewage through spiral-flow type automatic cleaning and filtration. The device is a drum-shaped cylinder body; an opening is formed along a tangent line on the side surface of the cylinder body to facilitate sewage entry; both the two ends of the cylinder body are filter screens; the filter screens are made of a metal material, take the shape of a grid, and are used for intercepting the floating objects in the sewage; a rubbish discharge outlet is formed in the center at the bottom of the cylinder body; when rubbish in the cylinder body accumulates to a certain extent, the rubbish can be discharged through the rubbish discharge outlet; after entering the device, the sewage containing the floating objects rapidly flows around the cylinder body in a spiral manner; after a certain period of time, the sewage flows out through the filter screens at the two ends of the cylinder body, and the floating objects intercepted in the cylinder body are removed through the rubbish discharge outlet, so that solid-liquid separation can be well realized. The device is simple and convenient to use and free of energy consumption, and has the advantages that the surfaces of the filter screens can be automatically cleaned and multi-stage application is realized; the defects that the conventional filter device is complex in structure, high in energy consumption, high in blockage possibility, and the like, are overcome.

Description

technical field [0001] The invention relates to a swirl type automatic cleaning and filtering device and method for removing floating objects in sewage, belonging to the technical field of sewage treatment. Background technique [0002] At present, the problem of sewage treatment in cities and factories has attracted much attention, and various new technologies have been continuously researched and explored. However, the floating objects in sewage often bring troubles to the water treatment process. Many enterprises choose to manually salvage them on a regular basis. It is time-consuming, labor-intensive and often inefficient. At present, most factories choose to use grids to remove them, or to use grids and primary sedimentation tanks together. The grids generally have coarse grids and fine grids, which are composed of a group or groups of parallel metal grids and plastic teeth. Composed of hooks or metal screens, frames and related devices, it is installed obliquely at th...

AI Technical Summary

Problems solved by technology

These devices often require a certain area, and cost more, mainly have the disadvantages of easy clogging, difficult slag removal, and low filtration efficiency.

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