The chemical composition, the content and the leachability of heavy metals in municipal solid waste incineration ( MSWI) fly ash were tested and analyzed. It is shown that the leachability of Pb and Cr exceeds the leaching toxicity standard, and so the MSWI fly ash is considered as hazardous waste and must be solidifled. The effect of solidifying the MSWI fly ash by cement was studied, and it is indicated that the heavy metals can be well immobilized if the mass fraction of the fly ash is appropriate. The heavy metals were immobilized within cement hydration products through either physical fixation, substitution, deposition or adsorption mechanisms.
参考文献
| [1] | Min Li;Jun Xiang;Song Hu .Characterization of solid residues from municipal solid waste incinerator[J].Fuel,2004(10):1397-1405. |
| [2] | Zhao Youcai;Song Lijie;Li Guojian .Chemical stabilization of MS W incinerator fly ashes[J].Journal of hazardous materials,2002(1/2):47-63. |
| [3] | Takaoka M;Takeda N;Miura S .The behaviour of heavy metals and phosphorus in an ash melting process[J].Water Science and Technology,1997(11):275-282. |
| [4] | H Kastuura;T Inoue;M Hiraoka;S Sakai .Full-scale Plant Study on Fly Ash Treatnent by the Acid Extraction Process[J].Waste Management,1996,16(05):491-499. |
| [5] | Gougar M L D;Scheetz B Z;Roy D M .Ettringite and C-S-H Portland Cement Phases for Waste ion Immobilization:A Review[J].Waster Monagement,1996,16(04):295-303. |
| [6] | GB 5086.2-1997.GB 5086.2-1997.Method of Leaching the Toxicity of Solid Wastes:Plane Surge[S].北京:中国标准出版社,1997. |
| [7] | ZhangYi;ZhaoYoucai.Incineration Technologies of Waste from Life[M].北京:化学工业出版社,2000:33. |
| [8] | GB 5085.3-1996.GB 5085.3-1996.Discriminate Standard of Hazardous Waste[S].北京:中国标准出版社,1997. |
| [9] | Xu Aimin;S L Sarkar .Microstructural Study of Gypsum activated Fly Ash Hydration in Cement Paste[J].Cement and Concrete Research,1991,21:1137-1147. |
| [10] | Hamermil J D .Pysical and Chemical Properties of MSWI Fly Ash[J].ACI MATERIALS JOURNAL,1997,88(03):294-301. |
| [11] | N. Alba;E. Vazquez;S. Gasso .Stabilization/solidification of MSW incineration residues from facilities with different air pollution control systems. Durability of matrices versus carbonation[J].Waste Management,2001(4):313-323. |
| [12] | YU Qi-jun,Shigeyoshi Nagataki,LIN Jin-mei.Solidification of Municipal Solid Waste Incineration Fly Ash with Cement and Its Leaching Behaviors of Heavy Metals[J].武汉理工大学学报(材料科学版)英,2003(01):55-60,68. |
| [13] | G.Thevenin;J.Pera .Interactions between lead and different binders[J].Cement and Concrete Research,1999(10):1605-1610. |
| [14] | Yousuf M;Mollah A .An Infrared Spectroscopic Examination of Cement based Solidification and Stabilization Systems-Portland types V and IP with Zinc[J].ENVIRONMENTAL SCIENCE AND HEALTH,1992,A27(06):1503-1519. |
| [15] | Lin C F;Lin T T;Huang T H .Leaching Processes of the Dicalcium and Copper Oxide Solidification/Stabilization System[J].Toxicological and Environmental Chemistry,1994,44(01):88-90. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%