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Patent Searching and Data


Title:
WATER TREATMENT DEVICE AND WATER TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2015/181999
Kind Code:
A1
Abstract:
A water treatment device and water treatment method are provided which can efficiently remove soluble silica in the water to be treated. This water treatment device (1) is characterized by being provided with a soluble silica precipitation unit (13) which precipitates the soluble silica dissolved in the water (W1) to be treated that has a concentration of aluminate ions represented in general expression (1) and a pH within a prescribed range, a solid-liquid separation unit (14) which separates the water (W1) to be treated and the precipitated soluble silica to obtain water (W1) to be treated from which the soluble silica has been removed, and a reverse osmosis filter unit (30) which, with a reverse osmosis membrane (30a), filters the water (W1) to be treated from which soluble silica has been removed in the solid-liquid separation unit (14). [Al(OH)4]- … Expression (1)

Inventors:
UKAI NOBUYUKI (JP)
OKINO SUSUMU (JP)
SUZUKI HIDEO (JP)
NAKASHOJI HIROSHI (JP)
YOSHIOKA SHIGERU (JP)
KOMATSU TOMOMI (JP)
Application Number:
PCT/JP2014/074322
Publication Date:
December 03, 2015
Filing Date:
September 12, 2014
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
C02F1/60; B01D61/04; C02F1/42; C02F1/46; C02F5/00
Domestic Patent References:
WO2012144277A12012-10-26
Foreign References:
JP2004141799A2004-05-20
JPS5573399A1980-06-03
JP2001157894A2001-06-12
JP2004097932A2004-04-02
JPH02227185A1990-09-10
JP2013169540A2013-09-02
US5904853A1999-05-18
Other References:
See also references of EP 2993160A4
Attorney, Agent or Firm:
SAKAI, Hiroaki et al. (JP)
Hiroaki Sakai (JP)
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