ION REMOVAL SYSTEM

WIPO Patent Application WO/2020/044694

A1

An ion removal system according to the present invention is provided with: a primary-side ion removal device comprising a primary-side hard-water accommodation part that accommodates hard water, and a primary-side microbubble generation part that generates and supplies microbubbles to the primary-side hard-water accommodation part, first metal ions, contained in the hard water in the primary-side hard-water accommodation part, being adsorbed by the microbubbles and removed from the hard water; a secondary-side pH adjusting device that increase the pH of the hard water from which the first metal ions have been removed by the primary-side ion removal device; and a secondary-side ion removal device comprising a secondary-side hard-water accommodation part that accommodates the hard water the pH of which has been increased by the secondary-side pH adjusting device, and a secondary-side microbubble generation part that generates and supplies microbubbles to the secondary-side hard-water accommodation part, second metal ions, contained in the hard water in the secondary-side hard-water accommodation part, being adsorbed by the microbubbles and removed from the hard water.

JPS5439960	METHOD OF TREATING STARCH WASTE WATER
WO/1995/007238	SEWAGE TREATMENT APPARATUS AND METHOD

TAKEHISA AYANE
MAEDA YASUNARI
AKITA TOMOHIRO

PCT/JP2019/021700

March 05, 2020

May 31, 2019

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PANASONIC IP MAN CO LTD (JP)

C02F1/58; C02F1/20; C02F1/461

WO2018159693A1

2018-09-07

JP2011161407A	2011-08-25
JP2008006405A	2008-01-17
JP2011056345A	2011-03-24
JP2010091125A	2010-04-22
JP2010078239A	2010-04-08
JP2000140840A	2000-05-23

See also references of EP 3845499A4

YAMAO, Norihito et al. (JP)

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