Influence of COD/N Ratios on Simultaneous Removal of C and N Compounds in Biological Wastewater Treatment in Sequencing Fed-Batch Reactor and Kinetic Analysis
Publication: Journal of Hazardous, Toxic, and Radioactive Waste
Volume 15, Issue 1
Abstract
The impact of chemical oxygen demand/nitrogen (COD/N) values of feed wastewater on COD and nitrogen removal and biomass growth in a sequencing fed-batch reactor (SFBR) operation was investigated. The multiple microbial reactions involved in the simultaneous removal process of carbonaceous and nitrogenous components in the SFBR system were analyzed using a set of kinetics mathematical model. The results indicate that COD/N ratios strongly influence COD and total nitrogen removal efficiency. The COD removal efficiency per gram microorganism changed from 64.3 to 78.1% at . The total nitrogen removal efficiency changed from 10.3 to 34.2% at . However, variable COD/N ratios of feed wastewater are not marked for biomass growth rate.
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Acknowledgments
The project was sponsored by the Scientific Research Foundation for Returned Scholars, by the Ministry of Education of China (Grant No. UNSPECIFIED[2007]1108), by the Science Foundation of Dongguan City (2008), by the National Key Basic Research Program of China (973) (Grant No. UNSPECIFIED2010CB227306), and by the NSFC (Grant No. NSFC50836005). The writers gratefully acknowledge the help of Hania in checking the accuracy of the English used in this paper.
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Information
Published In
Journal of Hazardous, Toxic, and Radioactive Waste
Volume 15 • Issue 1 • January 2011
Pages: 42 - 47
Copyright
© 2011 ASCE.
History
Received: Feb 24, 2010
Accepted: Aug 2, 2010
Published online: Aug 31, 2010
Published in print: Jan 2011
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