Treatment of organic chlorine in pulping effluents by activated sludge

Demirbas, G.
Gokcay, C.F.
Dilek, Filiz Bengü
A model activated sludge (AS) plant was fed by pulping effluents from a straw and reed processing paper works. The model was initially operated to simulate a dedicated treatment plant by continuously receiving chlorinated effluents from the pulp bleachery. In this simulation cycle the model activated:sludge was seeded only once during start-up and did not receive any domestic sewage after that. A carbon source was added in some of the experiments to bring up the organic content. In the second simulation cycle the pulping effluent was co-treated with municipal sewage. In this case the activated sludge unit:was being continuously dosed by microorganisms and the organics present in the sewage. A higher organic chlorine (AOX) removal was obtained at shorter SRTs in the co-treatment AS. High AOX removal was achieved at longer SRTs in the dedicated, once-seeded AS. The AOX removal mechanism was mineralization in both cycles. (C) 1999 Published by Elsevier Science Ltd on behalf of the IAWQ. All rights reserved.
Citation Formats
G. Demirbas, C. F. Gokcay, and F. B. Dilek, “Treatment of organic chlorine in pulping effluents by activated sludge,” 1998, vol. 40, Accessed: 00, 2020. [Online]. Available: