Assembling method for fiber filtration cloth filter and sewage treating method

Abstract

The invention discloses an assembling method for a fiber filtration cloth filter and a sewage treating method. According to the sewage treating method, fiber filtration cloth is employed as a filter layer; a filtering rotating drum coated by the fiber filtration cloth is vertically arranged in an enclosed pressure vessel; sewage entering the pressure vessel enters the filtering rotating drum after filtration by the fiber filtration cloth and is then discharged from a water outlet; the pressure vessel is employed to increase the flow of sewage passing through the fiber filtration cloth, so work efficiency is improved; and a backwashing apparatus installed at the side of the filtering rotating drum is used for backwashing, and the filtering rotating drum rotates under the driving of a drive unit during backwashing, so 360-degree backwashing of the filtering rotating drum and the fiber filtration cloth is realized. Since a filtering disc is arranged in a shell, influence of the external environment is avoided; due to vertical arrangement of the filtering rotating drum, the fiber filtration cloth filter has the advantages of a small occupied land area, low investment, a simple transmission mechanism, low power of the drive unit and conservation of energy. The fiber filtration cloth filter has good adaptability and is easy to install and adaptive to filtering conditions on various occasions.

Description

technical field [0001] The invention relates to the technical field of sewage treatment. Background technique [0002] At present, most of the sewage from urban sewage treatment plants is discharged into rivers after primary or secondary treatment. For drinking water, landscape water, green land irrigation and other purposes, advanced treatment is required. In the prior art, there are various sand filter systems (such as V-type filter, quartz sand filter, continuous flow sand filter, etc.), semi-immersed stainless steel filter cloth filter, rotary disc filter cloth filter, fiber filter, etc. that can achieve the same effect. beam filter etc. [0003] The following problems exist in the use of conventional sand filters: the filter material of the filter is arranged horizontally, the equipment occupies a large area, and the backwashing intensity is high. Air-water backwashing requires not only high-power water pumps and blowers, but also two sets of air-water. Large diameter...

AI Technical Summary

Problems solved by technology

[0003] The following problems exist in the use of conventional sand filters: the filter material of the filter is arranged horizontally, the equipment occupies a large area, and the backwashing intensity is high. Air-water backwashing requires not only high-power water pumps and blowers, but also two sets of air-water. Large diameter pipe valve system

The construction of the plant will make the cost of the whole system higher

[0010] 5. For small and medium-sized sewage treatment plants, the filtration equipment requires civil engineering cooperation, the whole system cannot be easily moved, lacks flexibility, cannot be used as a temporary equipment for emergency use, and cannot be mass-produced

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