SDI MEASURING METHOD, SDI MEASURING INSTRUMENT, AND WATER PRODUCTION METHOD USING REVERSE OSMOSIS MEMBRANE
PROBLEM TO BE SOLVED: To provide an SDI measuring method for calculating highly accurate SDI values at all times to estimate contamination risk of a separation membrane in advance in order to stably operate a membrane process thereafter, and to provide an SDI measuring instrument; to provide a water...
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| creator | ISHIHARA SATORU IWABORI HIROSHI ANDO MASAAKI |
| description | PROBLEM TO BE SOLVED: To provide an SDI measuring method for calculating highly accurate SDI values at all times to estimate contamination risk of a separation membrane in advance in order to stably operate a membrane process thereafter, and to provide an SDI measuring instrument; to provide a water production method using a reverse osmosis membrane including a process for measuring the SDI value by using the same method. SOLUTION: This SDI measuring method is characterized in that the SDI values of a separation membrane supplying liquid are measured by using a membrane filter with a contact angle θ equal to or less than 70°. COPYRIGHT: (C)2005,JPO&NCIPI |
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SOLUTION: This SDI measuring method is characterized in that the SDI values of a separation membrane supplying liquid are measured by using a membrane filter with a contact angle θ equal to or less than 70°. 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SOLUTION: This SDI measuring method is characterized in that the SDI values of a separation membrane supplying liquid are measured by using a membrane filter with a contact angle θ equal to or less than 70°. 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SOLUTION: This SDI measuring method is characterized in that the SDI values of a separation membrane supplying liquid are measured by using a membrane filter with a contact angle θ equal to or less than 70°. COPYRIGHT: (C)2005,JPO&NCIPI</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS SEPARATION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TESTING TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | SDI MEASURING METHOD, SDI MEASURING INSTRUMENT, AND WATER PRODUCTION METHOD USING REVERSE OSMOSIS MEMBRANE |
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