Suspended filtering system

Abstract

The invention relates to a suspended filtering system. The suspended filtering system comprises a filtering pool body, wherein the filtering pool body is divided into three areas by an upper filtering plate and a top plate of a water distribution channel from top to bottom; the area above the upper filtering plate is a clean water storage area; the area under the top plate of the water distribution channel is provided with a raw water distribution channel communicated with raw water; the area between the upper filtering plate and the top plate of the water distribution channel is a filtering area; a suspended particle filtering material with preset thickness is contained in the filtering area; filtering head installing holes are distributed in the upper filtering plate and are internally provided with filtering heads; water distribution holes are distributed in the top plate of the water distribution channel. Compared with a traditional forward-flow filtering process, a backward-flow filtering process of the filtering system has the advantages that the water head loss is as less as about 0.6m and is only 1 / 4 of that of conventional filtering; in addition, during back washing, a water head after upper filtering can be utilized, the back washing is realized by means of the gravity action of a water body, and energy consumption is not needed in the back-washing process, so that huge facility investments and operating costs are saved.

Description

technical field [0001] The invention relates to a filter system for water treatment. Background technique [0002] In the current conventional filtration process, the water flow direction of the water to be filtered is generally from the upper part of the filter material to the lower part of the filter material, that is, forward filtration. In this type of filtration process, the density of the filter material used is higher than that of water. At present, the widely used fast filter, V-shaped filter, siphon filter, etc. all adopt this method, and the filter tank disclosed by Chinese patent document CN203458855U also adopts this method. The middle and lower part of the filter pool body is equipped with a filter plate with a filter head, and there are filter materials such as pebbles and quartz sand on the filter plate. It is set at the lower part of the pool wall, and the sewage outlet is opened at the middle and upper part of the pool wall. This kind of filtration method h...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a suspension filtration system to solve the problem of large head loss caused by the forward filtration method of the existing filtration system

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