Title:
FILTER, DIAPHRAGM FILTRATION DEVICE, AND FILTRATION METHOD USING FILTER
Document Type and Number:
WIPO Patent Application WO/2019/102711
Kind Code:
A1
Abstract:
Provided is a filter configured to reduce the time until filtered water, obtained by sufficiently removing virus, is obtained after the start of filtration. A vertical filter 20 has a filtration membrane 20a and a holding container 20b which holds the filtration membrane 20a. The vertical filter 20 has, at the upper part of the holding container 20b, a filtered-water discharge opening 21 for discharging filtered water, and also has, at the lower part of the holding container 20b, a water discharge opening 22 for discharging initially filtered water and/or cleaning water remaining on the secondary side after backwashing. The water discharge opening 22 provides communication between the secondary-side space Y of the filter 20 and the outside.
Inventors:
SAO TOMOMI (JP)
KADOKAWA NARUAKI (JP)
KATO YASUHIRO (JP)
KADOKAWA NARUAKI (JP)
KATO YASUHIRO (JP)
Application Number:
PCT/JP2018/035993
Publication Date:
May 31, 2019
Filing Date:
September 27, 2018
Export Citation:
Assignee:
METAWATER CO LTD (JP)
International Classes:
B01D65/02; C02F1/44
Domestic Patent References:
| WO2003037477A1 | 2003-05-08 |
Foreign References:
| JP2003236350A | 2003-08-26 | |||
| JP2008237980A | 2008-10-09 | |||
| JP2013128892A | 2013-07-04 | |||
| JP2007222740A | 2007-09-06 | |||
| JPS62163708A | 1987-07-20 |
Attorney, Agent or Firm:
WATANABE Kazuhira (JP)
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