Title:
水処理方法および装置
Document Type and Number:
Japanese Patent JP7113454
Kind Code:
B2
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:
Masano Hashino
Daisuke Okamura
Kimura Katsuki
Daisuke Okamura
Kimura Katsuki
Application Number:
JP2018554993A
Publication Date:
August 05, 2022
Filing Date:
December 04, 2017
Export Citation:
Assignee:
ASAHI KASEI KABUSHIKI KAISHA
National University Corporation Hokkaido University
National University Corporation Hokkaido University
International Classes:
C02F1/44; B01D61/14; B01D61/16; B01D61/22; C02F1/42; C02F1/52; C02F9/02
Domestic Patent References:
| JP10504995A | ||||
| JP2016040030A |
Foreign References:
| WO2009020157A1 | ||||
| WO2016185788A1 |
Other References:
METCALFE, D et al.,Pre-treatment of surface waters for ceramic microfiltration,Separation and Purification Technology,Elsevier,2016年02月26日,163,p.173-180
WRAY, Heather E. et al.,Optimization of coagulant dose for biopolymer removal: Impact on ultrafiltration fouling and retenti,Journal of Water Process Engineering,Elsevier,2014年04月24日,1,p.74-83
HUBER, Stefan A. et al.,Characterisation of aquatic humic and non-humic matter with size-exclusion chromatography - organic,WATER RESEARCH,Elsevier,2010年09月29日,45,p.879-885
LIU, Junxia et al.,Fouling behaviors correlating to water characteristics during the ultrafiltration of micro-polluted,Colloids and Surfaces A: Physicochemical and Engineering Aspects,Elsevier,2016年10月13日,511,p.320-328
WRAY, Heather E. et al.,Optimization of coagulant dose for biopolymer removal: Impact on ultrafiltration fouling and retenti,Journal of Water Process Engineering,Elsevier,2014年04月24日,1,p.74-83
HUBER, Stefan A. et al.,Characterisation of aquatic humic and non-humic matter with size-exclusion chromatography - organic,WATER RESEARCH,Elsevier,2010年09月29日,45,p.879-885
LIU, Junxia et al.,Fouling behaviors correlating to water characteristics during the ultrafiltration of micro-polluted,Colloids and Surfaces A: Physicochemical and Engineering Aspects,Elsevier,2016年10月13日,511,p.320-328
Attorney, Agent or Firm:
Aoki Atsushi
Shinji Mihashi
Kazuhiro Nakamura
Saito Tsuko
Shunsuke Sanma
Shinji Mihashi
Kazuhiro Nakamura
Saito Tsuko
Shunsuke Sanma