Record Display for the EPA National Library Catalog


Main Title Further Developments of Water Desalination Systems Based on Large Spiral-Wound Reverse Osmosis Membrane Elements.
Author Forema, G. E. ; Kreme, S. S. ; Wigh, W. W. ; Wolf, T. D. ;
CORP Author Gulf Environmental Systems Co., San Diego, Calif.
Year Published 1973
Report Number DI-14-30-2641; RDPR-73-880;
Stock Number PB-223 420
Additional Subjects ( Desalting ; Osmosis) ; ( Osmosis ; Membranes) ; ( Cellulose acetate ; Membranes) ; ( Casting ; Membranes) ; Supports ; Fabrication ; Flux(Rate) ; Performance evaluation ; Porosity ; Heat treatment ; Reverse osmosis desalination ; Spiral wound membranes ; Membrane supports
Library Call Number Additional Info Location Last
NTIS  PB-223 420 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 142p
Work was directed toward attaining the capability to produce on a volume basis large spiral-wound membrane elements with membrane cast directly on the support fabric. A major effort was devoted to casting membranes on woven Dacron sailcloth, with additional effort on lower cost support materials such as nonwoven Dacron fabrics and papers. The main objective of this effort was to develop high-rejection, compaction-resistant membrane elements capable of producing a minimum water flux of 16 gal/sq. ft of membrane area per day at 600 psi from a natural feedwater after 10,000 hrs of operation. This objective was attained with membrane elements fabricated from a formamide membrane formulation cast on D-601 sailcloth. These membrane elements were tested on pretreated San Diego tap water for more than 2500 hrs. Salt rejection capability throughout the test was approximately 96.5%. Using the flux decline slope obtained for these membrane elements during the testing run (2500 hrs), the calculated water flux would be greater than 17 gal/sq. ft day after 10,000 hrs. of operation at 600 psi. (Modified author abstract)