Experimental Determination of the Inert Soluble COD Fraction of a Brewery Wastewater under Anaerobic Conditions

Abstract

The inert soluble COD fraction of a brewery wastewater, in which almost all COD was present in soluble form, was determined under anaerobic conditions by two different methods. The results indicated that the wastewater contained practically no inert soluble COD. The anaerobic digestion process was found to generate inert soluble microbial byproducts, with a yield of approximately 0.04 kg inert soluble COD kg⁻¹ soluble COD utilised. The two methods applied gave similar results.

Keywords:

• Anaerobic digestion
• brewery wastewater
• soluble inert COD fractions