Upflowing and compressable filtration system

Abstract

A reverse flow compressible filtering system, especially a filtering device using flexible filter material such as fibrous globule relates to the field of water treatment. In the course of filtering, the water flows from bottom to top and the filtering speed is over 80 m / h. The filtering system provided by the invention can replace micro-filter membrane filtering system because of the high water output in unit filtering area.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a system for filtering water with soft filter materials such as fiber balls. Background technique [0002] At present, the filters commonly used in the water treatment industry are multi-media filters and soft filter media filters. The filter materials used in the former are mostly quartz sand, anthracite, garnet and walnut shells, etc., and the filter materials used in the latter are soft materials such as synthetic fibers. Filter materials, such as fiber balls (including comet fiber bodies), etc. At present, the ordinary soft filter material filter uses the self-weight of the filter material and hydraulically compresses the filter material layer, and the filtration accuracy can best reach the median particle size ≤ 3 μm, which is better than the multi-media filter. However, the filtration effect is not ideal, and the removal rate of the two types of filters for suspend...

AI Technical Summary

Problems solved by technology

However, the filtration effect is not ideal, and the removal rate of the two types of filters for suspended solids and suspended solid particle diameter indicators cannot meet the filtration accuracy requirements of suspended solids ≤ 1mg / L and median particle size ≤ 1μm

If it is required to meet the requirements of this index, membrane technology must be used, and the technical solutions using membrane technology have membrane pollution and cleaning problems, and the industrial application in some industries is immature or the investment is too high

For this reason, the applicant applied for a Chinese patent with the application number 02125489.3 on August 13, 2002, titled "a fiber ball filter device", which provides a mechanically compressible fiber ball filter , the filtration accuracy can best meet the requirements of suspended solids ≤ 1mg / L, median particle size ≤ 1μm, and reach the level of microfiltration membrane. High, not suitable for large municipal water treatment problems

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