Record Display for the EPA National Library Catalog


Main Title Chula Vista, California, Pilot Plant Testing Program to Evaluate Seawater Pretreatment Methods for Reverse Osmosis.
CORP Author Stone (Ralph) and Co., Inc., Los Angeles, Calif.
Year Published 1973
Report Number DI-14-30-2833; RDPR-73-890;
Stock Number PB-223 594
Additional Subjects ( Feedwater treatment ; Desalting) ; ( Osmosis ; Desalting) ; ( Membranes ; Fouling prevention) ; Fouling ; Coagulation ; Chlorination ; pH control ; Alums ; Clarification ; Settling ; Ion exchanging ; Activated carbon treatment ; Pressure filtration ; Performance evaluation ; Pilot plants ; Water quality ; Turbidity ; Sea water ; Sand filtration ; Reverse osmosis desalination ; Hydraulic loading
Library Call Number Additional Info Location Last
NTIS  PB-223 594 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 118p
This study investigated sea water pretreatment methods which could be used in conjunction with reverse osmosis desalination to prolong membrane effectiveness. The investigation consisted of: (1) Bench-scale tests to determine optimum application of coagulants, chlorine and possible need for pH adjustments; (2) Pilot plant test to determine the effect of hydraulic loading; (3) Pilot plant test to determine the effects of chlorination, alum coagulation, settling, sand, manganese-zeolite, granular activated carbon and diatomaceous earth pressure filters; and (4) a two-week continuous run to determine the performance of the above mentioned filters under prolonged operation. The study showed that chlorination, sand pressure filtration and activated carbon filtration were sufficient to obtain the desired water quality of less than 1 JTU turbidity at all times during the test period. The bench-scale tests indicated that alum coagulation and settling provide satisfactory clarification. (Author)