WATER TREATMENT DEVICE AND BACKWASH METHOD

WIPO Patent Application WO/2017/141400

A1

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).

JPH074489	INDUSTRIAL APPLICABILITY: A sludge scraping method and a rotary drum type filter using the sludge scraping method.
JPH04161204	BACKWASHING TYPE FILTER APPARATUS

TAKEUCHI KAZUHISA (JP)
UKAI NOBUYUKI (JP)
TABATA MASAYUKI (JP)
ITO YOSHIAKI (JP)
FURUKAWA SEIJI (JP)
SUZUKI HIDEO (JP)
IWAHASHI HIDEO (JP)

PCT/JP2016/054722

August 24, 2017

February 18, 2016

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MITSUBISHI HEAVY IND LTD (JP)

B01D24/46; B01D24/02; B01D29/62; C02F3/06

JP2003299911A	2003-10-21
JPH09122671A	1997-05-13
JP2015142885A	2015-08-06
JP2003010873A	2003-01-14
JP2014181941A	2014-09-29
JP2014151278A	2014-08-25
US4983308A	1991-01-08

MORI Ryuichirou et al. (JP)

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