05209852 is referenced by 115 patents and cites 6 patents.

There is disclosed a process for scrubbing hollow fiber membranes in at least one hollow fiber membrane module disposed in a hollow fiber membrane filter column wherein the hollow fiber membrane module includes a large number of hollow fibers bundled together therein as the hollow fiber membranes. In the process, the filtration step of passing raw water through the pores of the hollow fibers from the outsides thereof to the insides thereof to thereby trap the fine particles on the outer surfaces of the hollow fibers is followed by the scrubbing step of charging bubbles into water around the outer surfaces of the hollow fibers to agitate the water to vibrate the hollow fibers, thereby exfoliating the fine particles trapped on the outer surfaces of the hollow fibers. This scrubbing is effected either in such a two stage manner that relatively coarse, hard, fine particles exfoliated in the initial stage of the scrubbing step is removed, followed by second-stage scrubbing, or by carrying out the scrubbing step while simultaneously removing the relatively coarse, hard, fine particles exfoliated in the initial stage of the scrubbing step. The scrubbing step is followed by the drain step of draining the resulting waste water out of the system.

Title
Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module
Application Number
7/747057
Publication Number
5209852
Application Date
August 19, 1991
Publication Date
May 11, 1993
Inventor
Satoru Tsuda
Niiza
JP
Keisuke Kitazato
Kumamoto
JP
Yoshio Sunaoka
Higashimatsuyama
JP
Agent
Sprung Horn Kramer & Woods
Assignee
Japan Organo
JP
IPC
B01D 65/02
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