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Film assembly cleaned mechanically

A technology for mechanical cleaning and membrane modules, applied in membrane technology, semi-permeable membrane separation, biological water/sewage treatment, etc., can solve the problems of increasing water permeation, reducing energy consumption, reducing the degree of membrane fouling, etc., and improving membrane flux. , reduce thickness, make simple effects

Inactive Publication Date: 2004-04-28
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a membrane assembly using mechanical cleaning, through the friction between the membrane filaments, especially between the membrane filaments and the membrane brush to achieve the effect of mechanical cleaning of the membrane filaments, to overcome the problem of membrane contamination of the boundary layer, Reduce the degree of membrane pollution, prevent the membrane filaments from forming bundles, maintain the effective area of ​​the membrane, increase the water permeability, prolong the membrane cleaning cycle, and reduce energy consumption

Method used

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  • Film assembly cleaned mechanically
  • Film assembly cleaned mechanically
  • Film assembly cleaned mechanically

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Embodiment 1

[0027] See figure 1 and figure 2 . The membrane module 12 includes a membrane, a water outlet branch pipe and an aeration pipe. The placement of the two diaphragms 11 is based on ensuring that the membrane filaments 1 of each diaphragm 11 can collide with each other to generate friction, and the membrane filaments are hollow fiber ultrafiltration membranes. The membrane filament 1 and the membrane brush 2 have a certain radian to ensure that the membrane filament 1 and the membrane brush 2 can vibrate and move when inflated, and the membrane brush is nylon with a smooth surface. Membrane brushes 2 are placed parallel to each other at intervals between membrane filaments 1, and membrane filaments 1 and membrane brushes 2 move relative to each other to generate friction when inflated. The two ends of the membrane filament 1 are respectively connected to the upper and lower water collection pipes 5 , the outlet water passes through the membrane filament 1 and collects in the ...

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Abstract

The present invention belongs to the field of membrane bioreactor, and is especially one mechanically cleaned membrane assembly. The membrane assembly includes membrane plate, water outlet branched pipe and aeration pipe. The membrane plate consists of membrane filament, membrane brush and water collecting pipe; the parallel membrane filaments and membrane brushes are arranged alternately; the membrane filament has its two ends connected to upper and lower water collecting pipes separately with the drained water being collected via membrane filament to two water collecting pipes; the water outlet branched pipe has one end connected to the water collecting pipe and the other end to the general water outlet pipe; the aeration pipe is connected to the branch and general aeration pipe; and gas is generated on two sides of the aeration pipe below the membrane plate and raises along the sides of the membrane plate. The membrane assembly is used in treating waste water with high flux.

Description

technical field [0001] The invention belongs to the field of membrane bioreactors, and in particular relates to a mechanically cleaned membrane module. Background technique [0002] In known membrane bioreactors, membrane fouling causes high energy consumption, which is one of the problems hindering the wide application of membrane bioreactors. Membrane fouling is caused by the deposition of suspended solids, colloidal substances, and macromolecular organic matter on the membrane surface and the blockage of membrane pores by small molecular organic matter. Channel blockage destroys the turbulent state of the water flow and weakens the cleaning effect of the shear force of the water flow on the membrane, resulting in a rapid decrease in membrane flux and a sharp increase in energy consumption per unit of water produced. The split membrane bioreactor increases the circulating water flow rate to reduce the pollution of the sediment layer; the submerged...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/02C02F1/44C02F3/10
CPCY02W10/10
Inventor 樊耀波徐慧芳
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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