Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Biological Treatment of Feedlot Runoff.
Author O'Neal., Michael V. ;
CORP Author Nebraska Univ., Lincoln. Dept. of Civil Engineering.
Year Published 1973
Report Number DI-14-31-0001-3827; OWRR-A-027-NEB; W74-06847 ; OWRR-A-027-NEB(3)
Stock Number PB-231 479
Additional Subjects Activated sludge process ; Agricultural wastes ; Water pollution control ; Performance evaluation ; Livestock ; Clarifiers ; Flocculants ; Surface water runoff ; Fertilizers ; Pilot plants ; Oxygen demand ; Organic wastes ; Inorganic nitrates ; Settling ; Maintenance ; Theses ; Feedlot wastes ; Suspended solids
Library Call Number Additional Info Location Last
NTIS  PB-231 479 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 61p
The purpose of the study was to operate and evaluate the performance of a completely mixed activated sludge unit system. Performance was to be evaluated by comparison to parameters established in the laboratory studies and by ease of operation and maintenance under field conditions. Conclusions reached were: (1) Organic loading of 0.2 gm COD/gm mixed liquor suspended solids (MLSS) or less will maximize waste strength reduction. (2) The clarifier can effectively retain solids in the system. Effectiveness of sedimentation depends upon maintenance of a flocculant sludge and MLSS concentrations not exceeding 6,000 mg/l. (3) The unit is generally maintenance free and easy to operate. Periodic measurements of settled volume provide adequate control of MLSS. (4) Foaming can become quite severe and affect the system by removing solids.