Cross-flow submerged membrane filter core

A submerged membrane and cross-flow technology, applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve problems such as easy clogging and pollution
CN103170248AActive Publication Date: 2013-06-26杭州澳科过滤技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
杭州澳科过滤技术有限公司
Publication Date
2013-06-26

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Abstract

The invention relates to a submerged membrane filter core, and relates to a filter core used in liquid filtration. The filter core is composed of connection pipe coupling sleeves, a mounting handle, a membrane part, and a fixing end plate. When filtration is operated, under the suction effect of a vacuum pump, part of the liquid in unfiltered liquid penetrates membrane-surface micro-pores and enters the inner cavity of hollow fiber membranes, such that a clear filtrate is produced; cross-flow liquid in a cross-flow pipe enters a central pipe through a cross-flow interface, and is injected to the surfaces of fiber membrane bundles through radial nozzle holes; the hollow fiber membranes are abraded with each other; under the cooperation of water current impaction, suspended matters adhered to the membrane surfaces are brought away. With the cross-flow submerged membrane filter core, high cross-flow speed is not needed. The distance between the radial nozzle holes and the fiber membrane bundle surfaces is short, operation with low cross-flow speed is maintained, and energy consumption is low. Cross-flow filtering and cross-flow washing can be carried out alternately.
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Description

technical field

[0001] The invention relates to a cross-flow submerged membrane filter core, which relates to a filter core used in liquid filtration, in particular to a cross-flow submerged membrane filter core. Background technique

[0002] Most membrane elements are installed in pressure vessels and adopt cross-flow filtration. The basic principle of cross-flow filtration is to use a circulation pump to make the non-filtrate circulate in the membrane elements at a high speed. Part of the liquid passes through the micropores on the membrane surface and is discharged as the filtrate, while the suspended matter larger than the micropores on the membrane surface is trapped on the membrane surface to form a filter cake layer. The shear force generated when the non-filtrate flows through the membrane surface at high speed takes away the suspended solids attached to the membrane surface, making the filter cake layer thinner and preventing the clogging of the membrane elements. ...

Claims

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