Utilisation of turbidity as an indicator for biochemical and chemical oxygen demand

The objective for this paper was to develop a high throughput methodology to determine chemical oxygen demand (COD), five-day biochemical oxygen demand (BOD5) and other water quality parameters via turbidity measurements of the treated effluent that has residual suspended microalgae. This methodology has twin applicability and can be utilised in wastewater management scenarios as well as pond management for the aquaculture and biofuel microalgae pond management applications. The final results indicated high correlations of turbidity with most of the studied standard parameters with the exception of BOD5. This paper also suggested that COD is a more reliable method than BOD5 in measuring the effluent from AIWPS®.