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Anaerobic Treatment of Phenol by an Expanded-Bed Reactor

Y. T. Wang, M. T. Suidan and B. E. Rittman
Journal (Water Pollution Control Federation)
Vol. 58, No. 3 (Mar., 1986), pp. 227-233
Stable URL: http://www.jstor.org/stable/25042885
Page Count: 7
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Abstract

An expanded-bed anaerobic reactor using granular activated carbon as the biological attachment medium was operated continuously on a synthetically prepared phenol solution containing salts and vitamins for 588 days. Four steady-state operating conditions were obtained with the anaerobic reactor. The empty-bed liquid detention time was maintained at 1 day, and the feed phenol concentration was doubled successively after each steady-state from 358 mg/L for the first phase to 2864 mg/L for the fourth phase. Steady-state removal efficiencies of phenol, COD, and DOC of more than 99.9, 92, and 93%, respectively, were achieved even for the highest loading conditions (phenol surface load 0.23 mg ${\rm COD}/{\rm cm}^{2}\bullet {\rm d}$). Very low effluent suspended solids concentrations and very low bacterial growth rates were characteristic features of the expanded-bed reactor.

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