期刊
WATER RESEARCH
卷 38, 期 4, 页码 965-971出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2003.10.039
关键词
anoxic degradation; denitrification; granular sludge; phenol; sequencing batch reactor
Studies were conducted on the anoxic phenol removal using granular denitrifying sludge in sequencing batch reactor at different cycle lengths and influent phenol concentrations. Results showed that removal exceeded 80% up to an influent phenol concentration of 1050 mg/l at 6 h cycle length, which corresponded to 6.4 kg COD/m(3)/d. Beyond this, there was a steep decrease in phenol and COD removal efficiencies. This was accompanied by an increase in nitrite concentration in the effluent. On an average, 1 g nitrate-N was consumed per 3.4 g phenol COD removal. Fraction of COD available for sludge growth was calculated to be 11%. (C) 2003 Elsevier Ltd. All rights reserved.
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