Artificial Soil Solution Chemistry of the Stabilized Sewage Sludge by Alkaline Fly Ash and Mine Tailing
Stabilized sewage sludge (SS) by alkaline fly ash (FA) and mine tailing as artificial soil to be applied on the ecological rehabilitation at mining junkyard offers a potential viable utilization of the industrial by-product, as well as solves the shortage of soil resource in mine area. An incubation experiment with different ratio of SS and FA was conducted to evaluate the solubility of major constituents. Results showed that the EC of municipal sewage sludge was decreased by Fly ash significantly. FA weakened the nitrification of total N from SS when proportion of FA in the mixture was more than 50％. Soil solution K concentration was depressed by FA application, whereas concentrations of Ca, Mg, Na, and Cl were increased in the end of the incubation. Thus, adding fly ash to municipal sewage sludge could reduce the release of potassium from sewage sludge, decrease the salinity and improve the chemical property of the amended soil.
stabilized sewage sludge fly ash mine tailing artificial soil chemistry
Hongling Zhang Lina Sun Tieheng Sun
Key Laboratory of Eco-remediation of Contaminated Environment and Resources Reuse (Shenyang Universi Institute of Applied Ecology Chinese Academy of Sciences Shenyang,Peoples Republic of China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）