Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Sequential nitrification-denitrification in a plug flow activated sludge system /
Author Heidman, James A.
CORP Author District of Columbia Dept. of Environmental Services, Washington. EPA-DC Pilot Plant.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1979
Report Number EPA-600/2-79-157; EPA-68-03-0349
Stock Number PB80-134075
OCLC Number 06567298
ISBN pbk.
Subjects Nitrification. ; Sewage sludge. ; Water--Purification--Filtration.
Additional Subjects Nitrification ; Activated sludge process ; Sewage treatment ; Carbon ; Pilot plants ; Mixing ; Aeration ; Oxidation ; Filtration ; Ammonia ; Sludge ; Settling ; Iron chlorides ; Reaction kinetics ; Phosphorus ; Microorganism control(Sewage) ; Chlorine ; Performance evaluation ; Denitrification
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  TD178.6.A4 Region 1 Library/Boston,MA 04/29/2016
EJBD ARCHIVE EPA 600-2-79-157 Headquarters Library/Washington,DC 09/07/2011
EJBD  EPA 600-2-79-157 c.1 Headquarters Library/Washington,DC 07/09/2013
ELBD RPS EPA 600-2-79-157 repository copy AWBERC Library/Cincinnati,OH 05/08/2019
ESAD  EPA 600-2-79-157 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB80-134075 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation xiii, 104 pages : illustrations ; 28 cm.
The use of the carbon sources present in municipal wastewater to provide the energy required for nitrification-denitrification was evaluated on a pilot plant scale in a simulated plug flow reactor. Most of this report is devoted to the results from operation of a nine-pass activated sludge system receiving primary effluent. The first two passes and the last pass were aerated whereas the remaining passes were mechanically mixed. Nitrification occurred in the aerated passes and denitrification in the others. By maintaining a sufficiently low process loading, nearly all of the incoming ammonia was oxidized in the first two passes with most of the nitrate subsequently denitrified in the next six passes. Residual NH4(+)-N levels of 0.1 mg/l and (NO2(-) + NO3(-))-N levels of 1.0 mg/l were obtained with both steady state and diurnal flow. FeCl3 addition during a portion of the study increased the P removal to approximately 90% with no discernable impact on the nitrification-denitrification performance. Nitrification and denitrification kinetic rates measured during laboratory studies were found to correlate well with actual process rates. These rates were obtained under varying conditions of temperature, available COD, length of initial aeration period, etc.
Prepared by EPA-DC Pilot Plant, under contract no. 68-03-0349. Issued Nov. 1979. Includes bibliographical references (pages 93-94).