Influence of dissolved oxygen on nitrification kinetics in a circulating bed reactor

• Type: Article in International Scientific Journal
• Date: 1998

Authors

Lazarova, V (Author) Other; Nogueira, R (Author) Other; Manem, J (Author) Other; L. F. Melo (Author) Other

Journal

Title: Water Science and Technology

Vol. 37

Pages: 189-193

ISSN: 0273-1223

Publisher: IWA PUBLISHING

Indexing

ISI Web of Knowledge - 17 Citations

Scopus - 22 Citations

Other information

Authenticus ID: P-001-9VZ

DOI: 10.1016/s0273-1223(98)00103-6

Abstract (EN): The influence of dissolved oxygen concentration in nitrification kinetics was studied in anew biofilm reactor, the circulating bed reactor (CBR). The study was carried out partly at laboratory scale with synthetic water containing inorganic carbon and nitrogen compounds, and partly at pilot scale for secondary and tertiary nitrification of municipal wastewater. The experimental results showed that either the ammonia or the oxygen concentration could be limiting for the nitrification rate. The transition from ammonia to oxygen limiting conditions occurred for an oxygen to ammonia concentration ratio of about 1.5-2 gO(2)/gN-NH4+ for both laboratory- and pilot-scale reactors. The nitrification kinetics of the laboratory-scale reactor was close to a half order function of the oxygen concentration, when oxygen was the rate limiting substrate. (C) 1998 IAWQ. Published by Elsevier Science Ltd.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5