Batch test for measurement of readily biodegradable COD and active organism concentrations in municipal waste waters

Abstract

Existing methods are complex and time-consuming, or require activated sludge seed acclimatised to the wastewater, which may not be available. A batch test procedure is presented to quantify five influent COD fractions - unbiodegradable soluble (USCOD) and particulate (UPCOD), readily (RBCOD) and slowly (SBCOD) biodegradable, and heterotrophic active biomass (HAB). The method is relatively simple and does not require acclimatised activated sludge. For RBCOD and USCOD, results from the batch test correlate closely with those from conventional methods.

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