Record Display for the EPA National Library Catalog

RECORD NUMBER: 268 OF 432

Main Title Methanol requirement and temperature effects in wastewater denitrification.
Author Dholaki, Shirish G. ; Ston, James H. ; Burchfiel, Harry P. ;
CORP Author Gulf South Research Institute.; Gulf South Research Inst., New Iberia, La.
Publisher [Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.,
Year Published 1970
Report Number PB198221
Stock Number PB-198 221
OCLC Number 27214509
Subjects Sewage--Purification--Biological treatment ; Nitrogen--Fixation ; Methanol
Additional Subjects ( Water pollution ; Nitrates) ; ( Sewage treatment ; Denitration) ; ( Chemical removal(Sewage treatment) ; Nitrates) ; ( Nutrients ; Chemical removal(Sewage treatment)) ; ( Biodeterioration ; Nitrates) ; Methyl alcohol ; Metabolism ; Microorganisms ; Pilot plants ; Oxygen ; Dissolved gases ; Temperature ; Water pollution control
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EMBD MF PB-198221 NRMRL/GWERD Library/Ada,OK 05/07/2004
NTIS  PB-198 221 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vi, 38 pages illustrations 28 cm.
Abstract
The removal of eutrophying nutrients from wastewater effluent is of first rank priority in pollution control. One of the major problems is the removal of low concentrations of nitrogen from large volumes of water at an acceptable cost. A pilot-scale, denitrifying plant was built using two types of continuous-flow reactors, a packed column and a suspended growth chamber. Denitrification at three temperature regimes and three dissolved oxygen levels was studied as a function of the methanol:NO3-N ratio. The most efficient ratio was usually found to be between 2:1 and 3:1. Effective denitrification at lower temperatures and high dissolved oxygen content required ratios equal to or slightly greater than 3:1. (Author)
Notes
Prepared for the Water Quality Office, U.S. Environmental Protection Agency under contract no. 14-12-527. "17010DHT09/70." Master microform held by: NN. Includes bibliographical references. Microfiche.