Thermodynamic Prediction of Cu Speciation Transformation and Distribution during Sludge Sewage Incineration
With the development of economy, rapid urbanization and sewage treatment, the quantity of sludge is growing quickly. Sludge incineration is more widely used due to the advantages of significantly reducing the volume of sludge, killing organic micro-organisms and saving energy. Since the sludge incineration is a very complex process, people have less research on the distribution of heavy metals in the entire temperature range and under the conditions of incomplete combustion during sewage sludge incineration. In this paper, thermodynamic equilibrium analysis is used to predict Cu speciation transformation and distribution during sewage sludge incineration. The results showed that Cu was based on condensed CuSO4 at a lower temperature; at high temperature, Cu existed as the forms of their gaseous metal simple substances or gaseous metal oxides. With the presence of chloride, Cu formed gaseous metal chlorides and the volatilizations of Cu were advanced with the increasing of chloride. With the presence of sulphur, Cu was easy to form solid sulphate at a lower temperature and the volatilization was inhibited. As the temperature increased, the transformation of Cu was not affected by the presence of sulphur. Phosphor had less effect on the volatilization of Cu.
Run-dong LI Zong-liang CHEN Yan-long LI Hai-jun ZHANG
Institute of Clean Energy and Engineering and Liaoning Key Laboratory of Clean EnergyShenyang Aerospace University, Shenyang, China
国际会议
The Fifth International Conference on Waste Management and Technology(第五届固体废物管理与技术国际会议)
北京
英文
467-470
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）