Brewery wastewater treatment using suspended and attached growth sequencing batch reactors

Laboratory-scale aerobic sequencing batch reactors, in both suspended-growt h and attached-growth modes, were used to study the treatment of brewery wa stewater. A Ringlace material was selected and employed for the attached-gr owth reactors. Experiments were conducted over a wide range of hydraulic re tention time, from 0.56 to 6.06 days. Test results demonstrated that brewer y wastewater could be successfully treated using both the suspended-growth and the attached-growth aerobic sequencing batch reactors. Treatment effici ency in terms of TOC, BOD5, COD and SS removal of over 90% could be consist ently maintained, with the suspended-growth reactors performing significant ly better than the attached-growth reactors.