STUDY ON MODELING FISH PROCESSING WASTEWATER ANAEROBIC TREATMENT

Abstract

A simple model anaerobic treatment treats fish processing wastewater as necessary for small and medium factories. For this reason, several techniques have been proposed. However, they have been expensive and hardly operational. A simple technique with low cost of treatment and operations was applied. In this study, the hydraulic retention times (HRTs), including 4, 6, 8, 12 and 24 hours with various loading rate of 1.0 to 6.0 kg COD/m3/day, were examined. A biomass as VSS in the model was at 10 to 11g/l. On the basis of the result the optimal hydraulic retention times (HRTs) with a 4.0 kg COD/m3/day organic loading rate was 6 hours with BOD5 and COD removal efficiency of 92% and 90%, respectively. By the end of the optimal hydraulic retention times, the total methane production volume collected was 3.2 litters.