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Patent Searching and Data


Title:
WATER TREATMENT DEVICE AND BACKWASH METHOD
Document Type and Number:
WIPO Patent Application WO/2017/141400
Kind Code:
A1
Abstract:
This water treatment device (10) is provided with: a filtration device (21) having a filter material layer (21f) for performing filtration of seawater (W) supplied from the upstream side; a washing water tank (81) that can supply washing water (Ws) to the filtration device (21) from the downstream side of the filter material layer (21f); a flow rate adjustment unit (82) for adjusting the flow rate of the washing water (Ws) supplied to the sand filtration device (21) by the washing water Ws tank (81); and a control device (85) having a flow rate control unit (86) for controlling the flow rate adjustment unit (82) such that the flow rate for the washing water (Ws) is greater than or equal to the minimum reverse washing flow rate to make the washing water (Ws) able to flow to the upstream side from the downstream side of the filter material layer (21f).

Inventors:
TAKEUCHI Kazuhisa (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
UKAI Nobuyuki (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)
FURUKAWA Seiji (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
SUZUKI Hideo (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
IWAHASHI Hideo (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
Application Number:
JP2016/054722
Publication Date:
August 24, 2017
Filing Date:
February 18, 2016
Export Citation:
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Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (16-5, Konan 2-chome Minato-k, Tokyo 15, 〒1088215, JP)
International Classes:
B01D24/46; B01D24/02; B01D29/62; C02F3/06
Foreign References:
JP2003299911A2003-10-21
JPH09122671A1997-05-13
JP2015142885A2015-08-06
JP2003010873A2003-01-14
JP2014181941A2014-09-29
JP2014151278A2014-08-25
US4983308A1991-01-08
Attorney, Agent or Firm:
MORI Ryuichirou et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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