Migration Characteristics Experiment of Heavy Metals in Municipal Solid Waste Gasification and Melting Incineration
Migration characteristics of heavy metals (cadmium, chromium, nickel, lead, copper and zinc) in the gasification and melting incineration system of municipal solid waste (MSW) were investigated by experiments. Effect of sever factors such as temperature, melting time and atmosphere on the volatilization of heavy metals were discussed in details. The results show that cadmium and lead are volatile metals, while chromium, nickel and cooper are refractory volatility heavy metals. Vitrification of the residues inhibited slightly heavy metals vaporization during MSW gasification and melting incineration, however, the volatility of heavy metals is different for different compound species. The volatilization rate of heavy metals fluctuates with temperature increase. The limited zinc is vaporized since a substantial amount of the zinc is converted into ZnO in high temperature oxidation atmosphere. The vaporization percentage of heavy metals vaporization is stable over 30 minutes of melting time. The influence degree of the added HCl and SO2 on each heavy metals is different. HCl can enhance the vaporization of heavy metals, but the effect of SO2 on vaporization percentage of heavy metals is not obvious.
municipal solid waste gasification and melting incineration heavy metals migration
HU Jianhang WANG Hua WU Zhenfen LIU Huili
Institute of Environment-Harmonious Energy New Technology, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
国际会议
2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)
北京
英文
2007-11-13（万方平台首次上网日期，不代表论文的发表时间）