Browsing by Author "Baskir, Cyril Isadore"
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- ItemOpen AccessActivated sludge process : effects of feed concentration on effluent COD(1977) Baskir, Cyril Isadore; Hansford, Geoffrey SpearingThe concentration of substrates in the feed to an activated sludge process was found to exert a significant effect upon its effluent COD. A mathematical model was proposed to explain this effect and was successful in correlating the data of this study. The model was based on the hypothesis that COD measures both substrate and product concentrations. It was found that an optimum sludge age exists for achieving minimum effluent COD. At sludge ages longer than the optimum, effluent COD increased due to product formation; at shorter sludge ages the effluent COD increased due to an increased concentration of degradable substrate.