Performance of rice straw fiber improving the drying of waste activated sludge

The high moisture content of the excess sludge in sewage treatment plant has brought great difficulties to subsequent treatment. In this study, rice straw fiber was collected as a conditioner for adding sludge. effect different grain diameter and dosages on drying efficiency were investigated under temperatures. Drying temperature is one most important factors affecting rate. Compared with original sludge, higher. 35-80 20%, water decreased from about 70% less than 10%. particle size affected by temperature, should be taken into account at low temperature.