Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Activated Sludge Process Using Pure Oxygen.
Author Wilcox, Edward A. ; Akinbami., Samuel O. ;
CORP Author Union Carbide Corp., Tonawanda, N.Y. Linde Div.;Environmental Protection Agency, Washington, D.C.;Office of Water Resources Research, Washington, D.C.
Year Published 1974
Report Number DI-14-12-846; EPA-11010-FRN; W74-11799 ; EPA-670/2-73-042
Stock Number PB-235 572
Additional Subjects Activated sludge process ; Oxygenation ; Pilot plants ; Performance evaluation ; Sedimentation ; Clarification ; Biochemical oxygen demand ; Phosphorus ; Nitrogen ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB-235 572 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 51p
An evaluation of the pure oxygen activated sludge system (UNOX) has been underway since May, 1970. During the first 16 months of test operation on the 100,000 gpd facility at the Blue Plains Wastewater Treatment Plant, over five different phases of operation were tested to demonstrate the performance of the system under varying conditions. The report describes the pilot plant facilities, the character of the wastewater, and the mode of operation and process information. The oxygen activated sludge system (UNOX) consisted of a unique, four stage, gas tight biological reactor that employed cocurrent gas-liquid contacting. In less than 1.85 hours of oxygenation, the system removed 90 percent of the influent BOD5 and utilized over 95 percent of the supplied oxygen. The effluent quality was as good or better than that obtained from a 3.6 hour step aeration system operating in parallel with the oxygenation system. The microbial organisms visually were essentially the same as those found in a typical conventional system. Their rate of activity, however, was greater than those of the air system. Satisfactory solid-liquid separation was achieved.