Owner Toray Industries, Inc. Chiyoda Corporation

Inventors Uemura, Tadahiro; Shinohara, Masayo; Taniguchi, Masahide; Ogi, Satoshi; Takabatake, Hiroo; Koshizuka, Hiromi; Kawamura, Kazushige

Agent Pizzeys

Pub. Number AU-A-2009230315

PCT Pub. Number WO2009/119351

Priority 2008-076514 24.03.08 JP

Filing date 13 March 2009

Wipo publication date 1 October 2009

C02F 9/00 (2006.01) Multistep treatment of water, waste water or sewage

B01D 61/02 (2006.01) Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration - Reverse osmosis

B01D 61/14 (2006.01) Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration - Ultrafiltration

B01D 61/58 (2006.01) Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration - Multistep processes

B01D 69/02 (2006.01) Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties

C02F 1/04 (2006.01) Treatment of water, waste water, or sewage - by distillation or evaporation

C02F 1/28 (2006.01) Treatment of water, waste water, or sewage - by sorption

C02F 1/44 (2006.01) Treatment of water, waste water, or sewage - by dialysis, osmosis or reverse osmosis

C02F 3/12 (2006.01) Biological treatment of water, waste water, or sewage - Activated sludge processes