Record Display for the EPA National Library Catalog


Main Title Reverse Osmosis Renovation of Municipal Waste Water.
CORP Author Aerojet-General Corp., El Monte, Calif. Environmental Systems Div.
Year Published 1971
Report Number FWQA-14-12-184; FWQA-17040-EFQ; 04669,; 17040-EFQ-12/69
Stock Number PB-197 659
Additional Subjects ( Sewage treatment ; Osmosis) ; ( Demineralization ; Sewage treatment) ; ( Cellulose acetate ; Membranes) ; Chemical removal(Sewage treatment) ; Mathematical models ; Nitrates ; Phosphates ; Ammonium compounds ; Organic compounds ; Reverse osmosis
Library Call Number Additional Info Location Last
NTIS  PB-197 659 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 172p
A fifteen-month laboratory program has shown that all grades of municipal waste water may be significantly improved by the reverse osmosis process. Comparisons are provided on the behavior and response of the reverse osmosis process to carbon-treated secondary sewage, alum-treated secondary sewage, secondary sewage, primary settled sewage, raw sewage, and digester supernatant. High removals of dissolved minerals, organic substances, and suspended matter have all been achieved in the same treatment. The effects of a flocculant, dispersant, chelating agent, enzyme, and acid on reducing product water flux decline are compared. The relative effects of reverse osmosis test-cell geometry on solids deposition and membrane performance are presented. A phenomenological model is postulated describing the role of undissolved solids and organic substances in producing product water flux decline and the subsequent maintenance of constant product water fluxes. A computer model of the reverse osmosis process has been developed to provide an accurate and rapid method of determining the design and cost of reverse osmosis facilities. (Author)