Treatment of food processing industrial effluent using coagulation and sequential batch reactor

Abstract

The performance of combined treatment processes, namely coagulation and Sequential Batch Reactor (SBR) to treat effluent from food processing industry was evaluated. The experimental study was conducted in a batch mode using pilot-scale reactor. The parameters used in assessing the treatment system were BOD5, COD and SS. The optimum amount of chemicals for the coagulation process ranges from 20 mg/L to 80 mg/L for coagulant and 60 mg/L to 220 mg/L for polymer while the optimum pH ranges from 5.5 to 7.0. The compliance of Standard A of the Environmental Quality Act was met using the combined process with SBR retention time of 6 hours.