Apparatus and method for cleaning membrane filtration modules

Details Apparatus and method for cleaning membrane filtration modules Apparatus and method for cleaning membrane filtration modules

2005-01-11

2005-01-11

Drodge, Joseph (Department: 1723)

Liquid purification or separation

Casing divided by membrane into sections having inlet

With membrane cleaning or sterlizing means

C210S220000, C210S257200, C210S321890

Reexamination Certificate

active

06841070

ABSTRACT:
A method and apparatus for cleaning a membrane module, the membrane module having a plurality of porous membranes, the membranes being arranged in close proximity to one another and mounted to prevent excessive movement therebetween and means for providing, from within the module, by means other than gas passing through the pores of the membranes, gas bubbles entrained in a liquid flow such that, in use, the liquid and bubbles entrained therein move past the surfaces of the membranes to dislodge fouling materials therefrom, the gas bubbles being entrained in the liquid by flowing the liquid past a source of gas to draw the gas into the liquid flow. The gas bubbles are preferably entrained into the liquid using a venturi type device. The membranes are preferably partitioned into discrete groups to assist cleaning while maintaining high packing density.

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