Record Display for the EPA National Library Catalog


Main Title Aqueous-phase oxidation of sludge using the vertical reaction vessel system. {Microfiche}
CORP Author Longmont, CO.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Publisher U.S. Environmental Protection Agency, Water Engineering Research Laboratory,
Year Published 1987
Report Number EPA/600/2-87/022
Stock Number PB87-170320
Subjects Sewage sludge--United States ; Sewage disposal--United States ; Sewage--Purification--Oxidation
Additional Subjects Oxidation ; Sludge ; Sewage treatment ; Municipalities ; Pressure ; Temperature ; Pumping ; Hydrostatic pressure ; Reduction ; Solids ; Graphs(Charts) ; Schematic diagrams ; Process charting ; Sewage treatment plants ; Chemical oxygen demand ; Reaction vessels
Library Call Number Additional Info Location Last
NTIS  PB87-170320 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 128 p. : ill. ; 28 cm.
The overall objective of the study was to provide plant-scale operating data on the wet-oxidation of municipal wastewater sludge utilizing the Vertical Reaction Vessel System and the effect of the return flow from the wet-oxidation process on the operation of the wastewater treatment plant. The Vertical Reaction Vessel System consists of a series of long concentric tubes placed in the earth using conventional oil field technology. Vertical construction produces a high hydrostatic head at the bottom of the system. The high pressure prevents boiling at temperatures of 250 degrees or higher required for wet-oxidation. By utilizing hydrostatic pressure, the only pumping required is that to overcome frictional losses. At temperatures above 260 degrees C total chemical oxygen demand reduction of about 80% and total volatile solids reductions of over 90% were consistently achieved.
Caption title. "Mar 1987." "EPA-600/2-87/022." Microfiche.