Round subsider micro-filter cloth surface filtration water exit method

A technology of surface filtration and microfiltration cloth, which is applied in the direction of fixed filter element filter, filtration separation, separation method, etc. It can solve the problem that the concentration of suspended solids is difficult to meet this requirement, and achieve easy maintenance, small loss of filtration head, and simple operation Effect

Inactive Publication Date: 2008-09-10
WUHAN TEXTILE UNIV
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  • Application Information

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Problems solved by technology

[0002] Under the general environment that the country advocates energy saving and emission reduction, in the field of sewage treatment, the effluent water quality standard of sewage treatment plants has been improved, and the suspended solids conc

Method used

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  • Round subsider micro-filter cloth surface filtration water exit method
  • Round subsider micro-filter cloth surface filtration water exit method
  • Round subsider micro-filter cloth surface filtration water exit method

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Embodiment Construction

[0019] The method for filtering water out of the surface of the circular sedimentation tank microfiltration cloth provided by the invention is: see figure 1 , it uses a filter water outlet system mainly composed of a microfiltration cloth filter plate 1, an automatic cleaning device 2 and a backwash water pump connected to it through a backwash pipeline 6, instead of the outlet weir outlet method of the usual sedimentation tank to achieve water outlet. Among them: there are multiple microfiltration cloth filter plates arranged along the periphery of the circular sedimentation tank. They perform surface filtration on the sewage in the circular sedimentation tank to make the concentration of suspended solids in the sewage lower than 10mg / L; When the filter plate is clogged, the automatic cleaning device will backwash the micro filter cloth filter plate to restore the filtration function of the micro filter cloth filter plate.

[0020] The method for filtering water out of the su...

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Abstract

The invention relates to a microfiltration cloth surface filtering water yielding method for a circular sedimentation tank, in which the water yielding is realized by a filtering system that mainly consists of a microfiltration cloth filter board (1) and an automatic cleaning device (2), wherein, the filtering system is provided with a plurality of microfiltration cloth filter boards which surround the periphery of the circular sedimentation tank and carry out the surface filtering of the sewage in the sedimentation tank, thus reducing the concentration of the suspending solids in the sewage to below 10mg/L;when the microfiltration cloth filter board is blocked up, the microfiltration cloth filter board is washed repeatedly by the automatic cleaning device, to resume the filtering function thereof. The method of the invention can improve water quality, and ensure the concentration of the suspending solids in the water to be lower than 10m/L; the method has the advantages of simple structure, convenience of installation and maintenance and low operation cost; and the backwash can be finished automatically and easily; the method can be used by old sewage treatment plant for improving the transformation of the yielding water quality standard and little changes can be done to the original technical equipment and construction; the phosphorus in the sewage can be effectively removed by using jointly with metal salt coagulant; besides, the chroma of the yielding water can also be effectively reduced.

Description

technical field [0001] The invention relates to sewage treatment, in particular to a method for using a micro-filter cloth to filter and remove suspended matter that is not easy to be precipitated and removed in a secondary sewage treatment sedimentation tank, so as to improve the water quality of sewage treatment effluent. Background technique [0002] Under the general environment that the country advocates energy saving and emission reduction, in the field of sewage treatment, the effluent water quality standard of sewage treatment plants has been improved, and the suspended solids concentration in the effluent water is required to be lower than 10mg / L, which is difficult To meet this requirement, it is imperative to develop methods that can reduce the concentration of suspended solids in the effluent of sewage treatment plants. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for filtering water out o...

Claims

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Application Information

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IPC IPC(8): B01D29/05B01D29/52B01D29/66C02F1/00B01D21/02
Inventor 曾庆福杨小俊吕斌蔡亚君张跃武夏东升
Owner WUHAN TEXTILE UNIV
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