| The pH, nutrients and heavy metals of stabilized sewage sludge were investigated by mixing municipal sewage sludge with alkaline fly ash and mine tailing. The results indicate that water-holding capacity of artificial soil Ⅲ (FA∶SS=1∶1) and Ⅱ (FA∶SS=2∶1)treatments were significantly higher than that of CK (brown meadow soil), while that of the Ⅳ (FA∶SS=1∶2) treatment was similar to CK; The nutrients contents (organic matter, N, P, K) of stabilized sewage sludge were up to a high fertilizer level. Moreover, with decrease of the ratio of fly ash to sewage sludge, the nutrient content of artificial soils increased. Except total Ni content of Ⅲ (FA∶SS=1∶1) treatment was high (187.67 mg·kg-1), Cd, Pb, Cu, Zn, and Cr for all artificial soil treatments were all significant lower than control standards for pollutants in sludges and fly ash from Agricultural use (GB 4284-84，GB 8173-87). |
