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http://dx.doi.org/10.5668/JEHS.2007.33.4.338

Chlorine Inhibition on the Denitrifying Activity of Activated Sludge Microorganisms  

Choi, Jin-Taek (Seoul Dairy Cooperative)
Nam, Se-Yong (Department of Environmental Engineering, Hankyong National University)
Publication Information
Journal of Environmental Health Sciences / v.33, no.4, 2007 , pp. 338-343 More about this Journal
Abstract
Chlorine inhibition on the denitrifing activity of activated sludge treating dairy wastewater was investigated in this study. Filamentous bulking was caused artificially by a sudden load of feed and monitored by measuring sludge volume index. In cases of the activated sludge and bulking sludge which were contacted with chlorine as $7.5\;mgCl_2/gVSS/day$ for bulking control, the decreases of specific denitrification of $32.2{\sim}40.4%\;and\;43.5{\sim}46.5%$ were shown in comparison to the control group which was not reacted with chlorine, respectively. In continuous operation, it was observed that the removal efficiency of total nitrogen was more susceptible to chlorine than the removal efficiency of total phosphorus.
Keywords
denitrifying activity; chlorine inhibition; bulking sludge; specific denitrification rate; dairy;
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Times Cited By KSCI : 4  (Citation Analysis)
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