Manufacture of Non-Toxic Lava from Recovery of the Incineration Ash by Plasma Fusing Technology

Abstract:

This research investigated and explored the overall technical and legal suggestions on mixed ash (bottom ash + fly ash) from the first BOT(built-operation then transfer) incineration plant in south Taoyuan of Taiwan, with the hope of serving as the reference for treating ash from urban refuse incinerator and making sustainable operation management policies in Taiwan. Both bottom ash and fly ash contain high-content harmful metals like lead, chrome, and cadmium, with the lead content exceeding standard value. Plasma fusing technology may effectively settle toxic heavy metals and reduce their dissolution rate. The results show that the increase in percentage of bottom ash could maintain post-fusing strength and produce solidification effect, but this reduced the stability of toxic heavy metals and raised their dissolution rate. Suitable mixture ratio of bottom ash and fly ash was 2:1, volume reduction ratio 0.349, and weight reduction ratio 0.4936. The mixture was fulvous and dense with gloss and adequate strength. The dissolution test of lava products complied with national standards, and they might be used for recycling aggregates and solidifying cement.

• Periodical: Advanced Materials Research (Volumes 194-196)
• Pages: 2365-2375
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.194-196.2365
• Online since: February 2011
• Authors: Jai Houng Leu, Li Fong Wu, Ay Su
• Keywords: Incineration Ash, Non-Toxic Lava, Plasma Fusing

References

[1] Sakai, S., S. E. Sawell, A. J. Chandler, T.T. Eighmy, D. S. Kosson, J. Vehlow, H. A. van der Sloot: Waste Management, World Trends in Municipal Solid Waste Management, , Vol. 20(2-3)(2000), pp.249-258.

DOI: 10.1016/s0956-053x(96)00106-7

[2] Wang, Kunsheng: Research project of EPA, Executive Yuan, Special Waste Clearing Technology Research—Toxicity Characteristic Research of General Waste Incineration Ashes, Program No. EPA-85-E3H1-09-02 (1996).

[3] Gao, Sihuai: Research project of EPA, Executive Yuan, Development and Promotion Program of Refuse Incineration Ash Utilization (second year), Program No. EPA-88U1H1-03-003 (1999).

[4] Duan, Taimin: Master Thesis, The Most Suitable Treatment of Refuse Incineration Ashes, Department of Mechanical Engineering, Yuan Ze University (1999).

[5] Yu, Yuzheng: Master Thesis, Research of Treating Power Plant Boiler Ash by Plasma Fusing Technology, Department of Mechanical Engineering, Yuan Ze University (2000).

[6] Tsai, C.C., Wang, K.S., Chiou, I.J.: Journal of Hazardous Materials, Effect of SiO2-Al2O3-flux ratio change on the bloating characteristics of lightweight aggregate material produced from recycled sewage sludge, Vol. 134 (2006), pp.87-93.

DOI: 10.1016/j.jhazmat.2005.10.035

[7] Chen, Z.Y.: Master Thesis, The influence of processing parameters on the formation of clinker phases by using inorganic wastes, Department of Environmental Engineering, National Cheng Kung University, Taiwan (2008).

[8] Chang, J.C., Lin, K.L., Chen, J.Z., Huang, D.Y., Lai, Y.J., Lin, Y.T. and Lin, S.M., Proceedings of REC2010, Characteristics of porous ceramics produced from F-class fly ash and spent diatomite, 2010 Resource and Environment Conference, Taiwan(2010).

DOI: 10.7763/jocet.2013.v1.48

[9] Sobolev, I.A.: Proceedings of PBNC'98, "High-temperature reprocessing of Solid Radioactive Waste in Plasma Shaft Furnace, 11th Pacific Basin Nuclear Conference(1997), Banff abstracted by Chandler on pp.473-489.