Pectin wastes are treated in a full scale anaerobic treatment plant which was built after extensive pilot test studies had been performed. The process used is an anaerobic activated sludge system. Between the reactor and the settling tank the mixed liquor passes through a vacuum degasser. This results in a proper settling of the return sludge. The efficiency of treatment is shown by a COD removal of 38 % and a BOD5 removal of 90 %.

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