[특허]Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module

Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-065/02
출원번호	US-0747057 (1991-08-19)
우선권정보	JP-0228106 (1990-08-31)
발명자 / 주소	Sunaoka Yoshio (Higashimatsuyama JPX) Kitazato Keisuke (Kumamoto JPX) Tsuda Satoru (Niiza JPX)
출원인 / 주소	Japan Organo Co. Ltd. (Tokyo JPX 03)
인용정보	피인용 횟수 : 119 인용 특허 : 0

초록 ▼

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.

대표청구항 ▼

A plural stage process for scrubbing including sequentially removing an outer layer of easier to remove particles and then an inner layer of harder to remove particles from porous hollow fiber membranes fouled by power plant water in a hollow fiber membrane module including a large number of hollow fibers bundled together therein as said porous hollow fiber membranes: comprising the filtration step of passing raw water containing fine particles through the pores of said hollow fibers from the outsides thereof to the insides thereof to trap said fine particles on the outer surfaces of said hollow fibers while draining filtrate obtained on the insides of said hollow fibers out of said hollow fiber membrane module, the scrubbing step of charging bubbles into water around the outer surfaces of said hollow fibers dipped in water to agitate said water around the outer surfaces of said hollow fibers to vibrate said hollow fibers, thereby exfoliating said fine particles trapped on the outer surfaces of said hollow fibers, and the drain step of draining the resulting waste water containing the exfoliated fine particles out of said hollow fiber membrane module; wherein the preliminary drain step of draining waste water containing fine particles exfoliated off the outer surfaces of said hollow fibers in the initial stage of said scrubbing step is added in the course of said scrubbing step to simultaneously effect scrubbing of said porous hollow fiber membranes and drain of said waste water in the initial stage of said scrubbing step.

이 특허를 인용한 특허 (119)

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Mahendran, Mailvaganam; Pedersen, Steven Kristian, Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module 원문보기

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Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module 원문보기

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