Dewatering Digested Sludge to a 35 Percent Cake: Dose Math Before the Incinerator

At a works serving 180,000 people, the belt press had run at 78 percent cake moisture for two years and the fluidised-bed incinerator kept refusing the feed. The transfer screw plugged twice a week, the bunker drained a brown liquor into the sump, and the autothermal balance only closed with supplem…