Kinetic studies on agrochemicals wastewater treatment by aerobic activated sludge process at high MLSS and high speed agitation

In the present work an effort has been made to study the kinetics of agrochemicals industry wastewater treatment by aerobic activated sludge process at high mixed liquor suspended solids (MLSS) and high speed agitation. MLSS concentration was varied in the range 6000–40,000 mg L−1 and 2.5 mg L−1 optimum dissolved oxygen (DO) was employed. Highest chemical oxygen demand (COD) reduction was found to be 76.83% at 9000 mg L−1 MLSS at 130 rpm and DO 2.5 mg L−1. Highest COD reduction was observed to be 80.76% at 25,000 mg L−1 MLSS at higher agitation speed.