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Title:
WATER TREATMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/002186
Kind Code:
A1
Abstract:
This water treatment system is provided with: a reverse osmosis membrane device (2); a biofilm treatment device (4) that has a carrier, on a surface of which is formed a biofilm, and that treats water to be treated (3) before the water to be treated (3) is transmitted through the reverse osmosis membrane device (2); and at least one of a water to be treated stoppage period circulation means (7) and a water to be treated stoppage period supply means (8) that are driven when the intake of new water to be treated (3) is stopped. The water to be treated stoppage circulation means (7) supplies and circulates water to be treated (3) from a water to be treated discharge outlet (4a) side of the biofilm treatment device (4) to a water to be treated supply port (4b) side. The water to be treated stoppage period supply means (8) supplies new water to be treated (3) to the biofilm treatment device (4).

Inventors:
HASHIMOTO Yuta (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
IWAHASHI Hideo (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
MATSUI Katsunori (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
TOKUNAGA Kiichi (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
YASUNAGA Takeshi (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
TABATA Masayuki (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
ITO Yoshiaki (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
TAKEUCHI Kazuhisa (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
GOUDA Yasuhide (2721, Muneage, Tamano-sh, Okayama 05, 〒7060305, JP)
KISHI Masahiro (2-14-5 Asahimachi, Takasagocho, Takasago-sh, Hyogo 21, 〒6760021, JP)
Application Number:
JP2014/067515
Publication Date:
January 08, 2015
Filing Date:
July 01, 2014
Export Citation:
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Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (16-5, Konan 2-chome Minato-k, Tokyo 15, 〒1088215, JP)
NAIKAI SALT INDUSTRIES CO., LTD. (11-19, Ajino 1-chome Kojima, Kurashiki-sh, Okayama 13, 〒7110913, JP)
AQUA SYSTEMS LIMITED (2-14-5, Asahimachi Takasagocho, Takasago-sh, Hyogo 21, 〒6760021, JP)
International Classes:
C02F1/44; B01D61/04; B01D65/08; C02F3/06
Foreign References:
JP2013111559A2013-06-10
JPH09187783A1997-07-22
JPH08323117A1996-12-10
JPH06170383A1994-06-21
JP2004025018A2004-01-29
JP2005110619A2005-04-28
JP2008296188A2008-12-11
JP2011262507A2011-11-30
Other References:
See also references of EP 2990384A1
Attorney, Agent or Firm:
MORI Ryuichirou et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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