Investigation of Novel Incineration Technology for Hospital Waste

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• 作者：Yangsheng Liu ; Lanlan Ma ; Yushan Liu ; Guoxing Kong
• 刊名：Environmental Science & Technology
• 出版年：2006
• 出版时间：October 15, 2006
• 年：2006
• 卷：40
• 期：20
• 页码：6411 - 6417
• 全文大小：99K
• 年卷期：v.40,no.20(October 15, 2006)
• ISSN：1520-5851

文摘

Conventional incineration systems for hospital waste(HW) emit large amounts of particulate matter (PM) andheavy metals, as well as dioxins, due to the large excessair ratio. Additionally, the final process residues-bottom and fly ashes containing high levels of heavymetals and dioxins-also constitute a serious environmentalproblem. These issues faced by HW incineration processesare very similar to those confronted by conventionalmunicipal solid waste (MSW) incinerators. In our previouswork, we developed a novel technology integratingdrying, pyrolysis, gasification, combustion, and ash vitrification(DPGCV) in one step, which successfully solved theseissues in MSW incineration. In this study, many experimentsare carried out to investigate the feasibility of employingthe DPGCV technology to solve the issues faced byHW incineration processes, although there was no MSWincinerator used as a HW incinerator till now. Experimentswere conducted in an industrial HW incineration plant witha capacity of 24 tons per day (TPD), located in Zhenzhou,Henan Province. Results illustrated that this DPGCVtechnology successfully solved these issues as confrontedby the conventional HW incinerators and achieved theexpected results for HW incineration as it did for MSWincineration. The outstanding performance of this DPGCVtechnology is due to the fact that the primary chamber actedas both gasifier for organic matter and vitrifying reactorfor ashes, and the secondary chamber acted as a gascombustor.