Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Conventional tertiary treatment /
Author O'Farrell, Thomas P.
Other Authors
Author Title of a Work
Bishop, Dolloff F.
CORP Author District of Columbia Dept. of Environmental Services, Washington. EPA-DC Pilot Plant.;Municipal Environmental Research Lab., Cincinnati, Ohio. Wastewater Research Div.
Publisher Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Available from National Technical Information Service,
Year Published 1976
Report Number 14-12-818; EPA-600/2-76-251; DI-14-12-818
Stock Number PB-262 522
OCLC Number 37349080
Subjects Sewage--Purification.
Additional Subjects Sewage treatment ; Activated carbon treatment ; Sewage filtration ; Clarification ; Biochemical oxygen demand ; Phosphorus ; Calcium oxides ; Sodium carbonates ; Efficiency ; Adsorption ; Ammonia ; Stripping(Distillation) ; Residues ; Tertiary treatment
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-2-76-251 Headquarters Library/Washington,DC 07/15/2014
EJBD  EPA 600-2-76-251 Headquarters Library/Washington,DC 12/09/2014
EKAM  EPA-600/2-76-251 Region 4 Library/Atlanta,GA 01/30/1998
EMBD  EPA-600/2-76-251 NRMRL/GWERD Library/Ada,OK 08/22/2011
ESAD  EPA 600-2-76-251 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-262 522 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation x, 29 p. : ill. ; 28 cm.
Tertiary treatment on effluent from the EPA-DC Pilot Plant's step aeration activated sludge system included two-stage or single-stage lime clarification, air stripping of ammonia, dual-media filtration, neutralization, and activated carbon adsorption. With a good secondary effluent to the lime clarification units and the dual-media filtration system, the two-stage process produced residual BOD and phosphorus (as P) concentrations of 1.4 mg/l and 0.09 mg/l, respectively. With fresh carbon, the TOC was less than 3 mg/l after treatment by carbon adsorption. Single-stage operation with sodium carbonate addition and with a good quality secondary effluent as feed produced an average phosphorus residual of 0.53 mg/l as P after clarification. Following dual-media filtration, the phosphorus residual as P was reduced to 0.10 mg/l. With a poor quality secondary effluent (filamentous growth), the slurry pool in the first-stage solid contactor unit was unstable and produced lower quality effluents. At warm air temperatures (greater than 75F), 80 percent of the ammonia was air stripped from the effluent of the two-stage lime system. Recalcined lime was recycled to the clarification system without a reduction in the efficiency of the tertiary system.
Contract no. 14-12-818. Project officer: Dolloff F. Bishop. "EPA-600/2-76-251." "November 1976."