Journal
CHEMOSPHERE
Volume 75, Issue 9, Pages 1179-1185Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2009.02.042
Keywords
Upflow anaerobic filter (UAF); Bleach composite wastewater (BCWW); Electron donor; Adsorbable organic halides (AOX); Reductive dechlorination; Pulp and paper (PAP)
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Funding
- Swedish International Development Agency (SIDA), Sweden through Asian Institute of Technology (AIT), Thailand
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The removal of AOX from bleach plant effluent of pulp and paper industry was studied using upflow anaerobic filter. In this paper biodegradation of AOX at different concentrations and effect of electron donors like acetate and glucose thereon in an upflow anaerobic filter at 20 d HRT is described. Results showed significant improvement in AOX degradation when electron donors such as acetate and glucose were supplemented to the influent. AOX degradation was 88% at 28mg AOX L-1 and 28% at 42 mg AOX L-1. The percent degradation efficiency was enhanced to 90.7, 90.2, and 93.0 at 28 mg AOX L-1 when the influent was supplemented with glucose, acetate and both glucose and acetate, respectively. Similarly, the efficiency was 57, 56.6 and 79.6 at 42 mg AOX L-1 when the influent was supplemented with glucose, acetate and both glucose and acetate, respectively. The GC-MS analysis data indicated that supplementation of the influent with electron donor increased the biodegradability of number of chlorinated organic compounds. (C) 2009 Elsevier Ltd. All rights reserved.
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