Authors: Xinmin Zhan Mark G Healy Jianping Li
Publish Date: 2008/12/14
Volume: 32, Issue: 5, Pages: 607-614
Abstract
The aim of this study was to examine nitrogen removal from slaughterhouse wastewater in a laboratoryscale sequencing batch reactor SBR operated at low dissolved oxygen DO levels under two aeration strategies intermittent aeration IA and continuous aeration CA Under the IA strategy during the aeration periods the maximum DO was controlled at 10 saturation under the CA strategy in the first hour of the react phase the DO was maintained at 10 saturation and then it was kept at 2–3 saturation in the remaining react phase Total nitrogen removals of up to 95 and 91 were achieved under the IA and CA aeration strategies respectively It is proposed that in situ measurement of oxygen utilization rates can be used to control the operation of SBRs for nitrogen removalThis project is funded by the Irish EPA under the ERTDI programme Project Reference Number 2005ETMS31M3 The authors wish to thank Dr Brian Donlon EPA and Mr Brian Cloonan and Ms Caroline Scanlan Western Proteins Co Mayo for their help and support
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