Record Display for the EPA National Library Catalog


Main Title Amenability of Reverse Osmosis Concentrate to Activated Sludge Treatment.
CORP Author Rex Chainbelt, Inc., Milwaukee, Wis. Ecology Div.
Year Published 1971
Report Number EPA-17040-EUE; 11606,; 17040-EUE-07/71
Stock Number PB-211 027
Additional Subjects ( Sewage treatment ; Osmosis) ; Activated sludge process ; Water supply ; Performance evaluation ; Membranes ; Feasibility ; Dissolved organic matter ; Precipitation(Chemistry) ; Feedwater treatment ; Fouling ; Cellulose acetate ; Suspended sediments ; Pilot plants ; Clarification ; Chemical removal(Water treatment) ; Tubular membranes ; Spiral wound membranes ; Reverse osmosis
Library Call Number Additional Info Location Last
NTIS  PB-211 027 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 123p
Pilot scale tubular and spiral wound Reverse Osmosis (RO) units were used to establish the feasibility of renovating municipal sewage. Results indicated that prior treatment with ferric chloride and alum will be necessary even when using the tubular RO system. RO produced an approximate 100 mg/ TDS of inorganic ions in the effluent, but an estimated 40 to 50% of the soluble organic material permeated the membranes at high feed water recoveries. Approximately 70% of the organic material passing the membrane was ethanol, but other organics may pass through the membranes from other sewages. 92% water recovery rates, with no precipitation problems in the RO concentrate, were achieved, but RO product waters would require further treatment for organic removal prior to discharge. The feasibility of biodegrading RO concentrates was also established.