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Abstract
This paper presents the results of a bench scale RBC process for the treatment of a strongly acidic, high BOD waste from an onion pickling factory. The results show that, with adequate pH stabilisation, the process will operate efficiently at very high concentrations. TOC is used as the main analytical parameter and appears to have advantages over the use of BOD5; correlations of TOC with BOD5 are presented. A tentative design procedure is proposed and maximum substrate utilisation rates are evaluated.