APPARATUS AND METHOD FOR PRODUCING PURIFIED WATER

APPARATUS AND METHOD FOR PRODUCING PURIFIED WATER

PROBLEM TO BE SOLVED: To provide an apparatus for producing purified water capable of efficiently producing a purified water having a low boron concentration.SOLUTION: There is provided an ultrapure water producing apparatus which comprises: an activated carbon device 1; a heater 2; a membrane type...

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1. Verfasser: IWASAKI KUNIHIRO
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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creator IWASAKI KUNIHIRO
description PROBLEM TO BE SOLVED: To provide an apparatus for producing purified water capable of efficiently producing a purified water having a low boron concentration.SOLUTION: There is provided an ultrapure water producing apparatus which comprises: an activated carbon device 1; a heater 2; a membrane type filtration device 3; a raw water tank 4; a pretreatment device 5; an electrically deionizing device 6; and a subtank 7 for primary purified water. Further, the pretreatment device 5 comprises: a first reverse osmosis membrane (RO) device 8; a second reverse osmosis membrane (RO) device 9; and a decarbonation membrane device 10. The pretreatment device 5 is designed so that treated water W1 having a chloride ion concentration of 100 ppb or less may be introduced into a desalination chamber in the electrically deionizing device 6 according to water quality of raw water W0.
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subjects CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title APPARATUS AND METHOD FOR PRODUCING PURIFIED WATER
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