PURE WATER PRODUCING APPARATUS AND PURE WATER PRODUCING METHOD

PURE WATER PRODUCING APPARATUS AND PURE WATER PRODUCING METHOD

PROBLEM TO BE SOLVED: To provide a pure water producing apparatus and a pure water producing method which can produce pure water with very low boron concentration at a high water recovery rate. SOLUTION: The pure water producing apparatus includes a pretreatment device 5 for treating raw water W0, a...

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1. Verfasser: IWASAKI KUNIHIRO
Format: Patent
Sprache:eng
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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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description PROBLEM TO BE SOLVED: To provide a pure water producing apparatus and a pure water producing method which can produce pure water with very low boron concentration at a high water recovery rate. SOLUTION: The pure water producing apparatus includes a pretreatment device 5 for treating raw water W0, a first electric deionizer 6A for receiving treated water W1 from the pretreatment device 5 into a desalting chamber 11A to perform deionization treatment, and a second electric deionizer 6B for receiving concentrated water W4 from the first electric deionizer 6A into a desalting chamber 11B to perform deionization treatment. Desalted water W5 from the second electric deionizer 6B is supplied to the upstream side of the first electric deionizer 6A. COPYRIGHT: (C)2010,JPO&INPIT
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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 PURE WATER PRODUCING APPARATUS AND PURE WATER PRODUCING METHOD
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