ABSTRACT Flow bio-sludge to mixing tank is the sludge flow from bio-sludge that will be transferred into the mixing tank to be processed into sludge cake, which will be used as fuel in the power boiler. The dewatering process uses a screw press, where the parameters involved are speed, torque, and feed flow. The aim of this research is to determine the effect of flow bio-sludge and screw press…