ࡱ> 9 RQbjbja|.DlNNNNNNNtR < d;n!""6"6"6"###:::::::$= 3?d:N#####:+NN6"6"_;+++#N6"N6":+#:++/3hNN46"! |N&34u;0;4?+^?4+J NNNNW^u;mW>Wqppp#nvDnS)R(u z * UOTvf* Xd яt^eg W^SSU\vO_bV N\W^_YbRtQ^'YWu;mW>WqpS0FO/f1uNvMRbNvW^u;mW>WqpS_\ VdkVQ gsQqppp#nDnS)R(uvxvzT] z[O NY0,geNVYW^u;mW>Wqppp#nDnS)R(usr:NW@x Npp#n)R(uv;N_`$ wllRbvfNea$ 4ll/mQWvfNeb$ kXW:WvPgec$ $X0WI{vkXEQPge0] gv] z[f Sc6RYt_S_ ُNpp#nDnS)R(uSN N[N{|eP^TsXNu N)Rvq_T0dkY ,ge_N[pp#nDnS)R(u(WsXhQT] z'`(Blebvĉ[SvQǑSvYtel\ON{USvN~0,gecQ ^pp~YtTDnS)R(u ޘpp~3z[SYtTkXW /fNTkTbVV`vpp#n{tV{eu0 sQ.͋ W^u;mW>W qppp#n ^pp ޘpp DnS)R(u Beneficial Uses of Municipal Waste Combustion Ash Zhanghua* , He Pinjing*. Institute of Solid Wastes Treatment & Reclamation, School of Environmental Science & Engineering, Tongji University, 200092 Shanghai Abstract Incineration is an effective way for a big city to dispose of its substantial municipal solid waste. And more than 20% of the waste (by weight) will retain in combustion ash, thus producing a great amount of ash. How to deal with the ash is of great concern now in the world. In China, with the developing of urbanization and rapid increasing of municipal solid waste, many cities now are constructing or planning to construct large-scale municipal solid waste incinerators. However, due to lacking of state-of-the-art incinerator in China, researches or demonstration projects on combustion ash (including quality analysis, treatment, beneficial use and disposal) are absent so far. As a result, studies on the ash, which will be produced in the coming years, should be carried out. Based on the status quo of beneficial use of municipal waste combustion ash in some countries, the major ash uses are discussed in the paper, including aggregate substitute of asphalt pavement and concrete, landfill cover as well as fill materials of road base and embankment. Existing demonstration projects and experiments have showed that, as long as been well controlled, applications of beneficial use of bottom ash will not pose unacceptable hazard to human health and environments. Engineering and environmental requirements for ash utilization are also analyzed. A management strategy (beneficial use of bottom ash after pretreatment and landfill of fly ash after treatment) is proposed to solve ash problems that will occur in the near future in China. 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