Title:
WATER TREATMENT METHOD AND WATER TREATMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/105569
Kind Code:
A1
Abstract:
Provided are a water treatment method and a water treatment device whereby water to be treated, said water containing humin substances and biopolymers, can be stably filtered through a membrane without causing clogging of the filtration membrane. The water treatment method for clarifying water to be treated, which contains humin substances and high-molecular substances, comprises: a humin substance removal step for subjecting the water to be treated to a treatment for removing the humin substances to give humin substance-reduced water; a high-molecular substance aggregation step for aggregating the high-molecular substances in the humin substance-reduced water by a treatment with the use of an aggregating agent to give aggregate-containing water; and a membrane filtration step for filtering the aggregate-containing water through a membrane.
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Inventors:
HASHINO MASATOSHI (JP)
OKAMURA DAISUKE (JP)
KIMURA KATSUKI (JP)
OKAMURA DAISUKE (JP)
KIMURA KATSUKI (JP)
Application Number:
PCT/JP2017/043524
Publication Date:
June 14, 2018
Filing Date:
December 04, 2017
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
UNIV HOKKAIDO NAT UNIV CORP (JP)
UNIV HOKKAIDO NAT UNIV CORP (JP)
International Classes:
C02F9/04; B01D61/14; B01D61/16; B01D61/22; C02F1/42; C02F1/44; C02F1/52; G01N15/02
Domestic Patent References:
| WO2009020157A1 | 2009-02-12 | |||
| WO2016185788A1 | 2016-11-24 |
Foreign References:
| JPH10504995A | 1998-05-19 | |||
| JP2016040030A | 2016-03-24 |
Other References:
METCALFE, D. ET AL.: "Pre-treatment of surface waters for ceramic microfiltration", SEPARATION AND PURIFICATION TECHNOLOGY, vol. 163, 26 February 2016 (2016-02-26), pages 173 - 180, XP029466446
WRAY, H. E. ET AL.: "Optimization of coagulant dose for biopolymer removal: Impact on ultrafiltration fouling and retention of organic micropollutants", JOURNAL OF WATER PROCESS ENGINEERING, vol. 1, 24 April 2014 (2014-04-24), pages 74 - 83, XP055510402
HUBER, S. A. ET AL.: "Characterisation of aquatic humic and non-humic matter with size-exclusion chromatography-organic carbon detection-organic nitrogen detection(LC-OCD-OND", WATER RESEARCH, vol. 45, 29 September 2010 (2010-09-29), pages 879 - 885, XP027574613
LIU, J. X. ET AL.: "Fouling behaviors correlating to water characteristics during the ultrafiltration of micro-polluted water with and without the addition of powdered activated carbon", COLLOIDS AND SURFACES A: PHYSICOCHEMICAL AND ENGINEERING ASPECTS, vol. 511, 13 October 2016 (2016-10-13), pages 320 - 328, XP029800406
WRAY, H. E. ET AL.: "Optimization of coagulant dose for biopolymer removal: Impact on ultrafiltration fouling and retention of organic micropollutants", JOURNAL OF WATER PROCESS ENGINEERING, vol. 1, 24 April 2014 (2014-04-24), pages 74 - 83, XP055510402
HUBER, S. A. ET AL.: "Characterisation of aquatic humic and non-humic matter with size-exclusion chromatography-organic carbon detection-organic nitrogen detection(LC-OCD-OND", WATER RESEARCH, vol. 45, 29 September 2010 (2010-09-29), pages 879 - 885, XP027574613
LIU, J. X. ET AL.: "Fouling behaviors correlating to water characteristics during the ultrafiltration of micro-polluted water with and without the addition of powdered activated carbon", COLLOIDS AND SURFACES A: PHYSICOCHEMICAL AND ENGINEERING ASPECTS, vol. 511, 13 October 2016 (2016-10-13), pages 320 - 328, XP029800406
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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