Patent ID: 7669348
Filing Date: 2010-03-02
Classification: F26B

Abstract:
1. Apparatus for treating sewage sludge having a moisture content by drying and/or pasteurizing and/or otherwise chemically treating material comprising sludge and any added ingredients comprising: (a) a drum; (b) sewage sludge delivery means connected to the drum for delivering sewage sludge with a moisture content to the drum; (c) means for tumbling the material within the drum; (d) means for heating the material in the drum; (e) exhaust means for drawing off moisture gases being evaporated from the material in the drum; (f) discharge means for discharging the treated material from the drum; (g) at least one weight-responsive member on which the drum is mounted; (h) control means connected to said weight-responsive member(s), whereby the solids content of the treated material can be determined by measuring the difference in weight of the drum with the material in the drum, before and after moisture is drawn off from the material, prior to discharge of treated material from the drum.