Composition of Waste Sludge from Municipal Wastewater Treatment Plant

The effect of raw assistant materials on the composition temperature,germination,heavy metal contents and sludge maturity was studied in order to select appropriate assistant material. The results showed that the optimal weight ratio of assistant materials is 57.25, 16.20, 39.75 and 36.06 for sludge, rice husk, peat and fly ash. At this optimal condition, germination ratio was 70.3%, and heavy metal were fixed well while maturity of sludge was also higher.