Composite semipermeable membrane, production process thereof, and element, fluid separation equipment and treatment method for boron-containing water using the same

Composite semipermeable membrane, production process thereof, and element, fluid separation equipment and treatment method for boron-containing water using the same

A composite semipermeable membrane, which comprises a separating functional layer comprising a reactant of polyfunctional amine with polyfunctional acid halide, wherein a water-soluble organic material from the group of surfactants or commonds having a formyl, oxilanyl, acid halide, carbonate, carba...

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Bibliographische Detailangaben
1. Verfasser: SASAKI TAKAO,TOMIOKA HIROKI,NAKATSUJI KOJI
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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Beschreibung
Zusammenfassung:A composite semipermeable membrane, which comprises a separating functional layer comprising a reactant of polyfunctional amine with polyfunctional acid halide, wherein a water-soluble organic material from the group of surfactants or commonds having a formyl, oxilanyl, acid halide, carbonate, carbamate or alkyl halide group is in contact with the separating functional layer, and the separating functional layer has a boron removal ratio of 95% or more, when seawater at 25 DEG C having a pH of 6.5, a boron concentration of 5 ppm and a TDS concentration of 3.5% by weight is permeated under an operation pressure of 5.5 MPa.