Title:
WATER TREATMENT SYSTEM, WATER TREATMENT METHOD , AND WATER PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/115455
Kind Code:
A1
Abstract:
When performing water treatment using a hollow fiber membrane filtration module, the present invention achieves increased efficiency of filtration and reduction of membrane clogging and also makes it possible to improve the washing efficacy of air backwashing, etc. Prior to performing filtration of raw water using a hollow fiber membrane bundle, one end of which is not fixed, the turbidity of the raw water is measured and an inorganic flocculant is added in an amount that is adjusted on the basis of the measured turbidity. By thereby forming flocs of favorable size, increased efficiency of filtration and reduction of membrane clogging are achieved and it also becomes possible to improve washing efficacy.
Inventors:
WAKASA HIROYUKI (JP)
NISHIDA TAKASHI (JP)
NISHIDA TAKASHI (JP)
Application Number:
PCT/JP2016/004855
Publication Date:
July 06, 2017
Filing Date:
November 10, 2016
Export Citation:
Assignee:
OJI HOLDINGS CORP (JP)
International Classes:
C02F1/44; B01D21/01; B01D61/16; B01D61/18; B01D61/20; B01D63/02; B01D65/02; C02F1/52
Foreign References:
| JP2012239947A | 2012-12-10 | |||
| JP3686225B2 | 2005-08-24 | |||
| JP2012024673A | 2012-02-09 | |||
| JPS51130055A | 1976-11-12 |
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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