Co-disposal and reutilization of municipal solid waste and its hazardous incineration fly ash
Compared to landfill, MSW incineration (MSWI) not only eliminates its innate secondary pollution and land occupation, but also yields a net emission reduction. Regretfully, MSWI produces hazardous incineration fly ash (IFA) enriched with potentially toxic elements and dioxins. Given these, a harmles...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Environment International |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0160412022002732 |
| _version_ | 1828779120936353792 |
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| author | Yanqing Niu Liping Wen Xin Guo Shi'en Hui |
| author_facet | Yanqing Niu Liping Wen Xin Guo Shi'en Hui |
| author_sort | Yanqing Niu |
| collection | DOAJ |
| description | Compared to landfill, MSW incineration (MSWI) not only eliminates its innate secondary pollution and land occupation, but also yields a net emission reduction. Regretfully, MSWI produces hazardous incineration fly ash (IFA) enriched with potentially toxic elements and dioxins. Given these, a harmless integrated scenario of co-disposal and resource reutilization of MSW and its hazardous IFA is proposed and subjected to technical and economic analysis. It introduces an IFA melting furnace, as an onsite modular integration, which serves as a bridge between the MSW incinerator and the commercial rock wool production line. The incinerator burns MSW for heating and electricity supply. The melting furnace further burns out the highly toxic dioxins adsorbed on IFA, as well as solidifying the potentially toxic elements into the molten slag, which substitutes for basalt as raw materials used for high value-added rock wool production. That achieves collaborative reduction, stabilization, harmlessness and resource reutilization of MSW as an energy source, and its IFA as energy-saving materials, as well as a net carbon emission reduction and high economic benefits. Even more exciting, as opposed to the serious losses of the other existing scenarios, it is profitable even without the feed-in tariff and fiscal subsidy, both that are the dominating income source of other scenarios including conventional MSWI & IFA landfill and demonstration MSWI with IFA melting & landfill. Discounted Cash Flow technique shows that the profit is ∼ 9.2 RMB per ton of MSW, and it increases with insulation price, feed-in tariff, and fiscal subsidy. With the feed-in tariff and fiscal subsidy, the existing two scenarios and the proposed harmless integrated scenario can produce revenue of 103.8, 98.1–110.5, and 145.0 RMB per ton of MSW, respectively. Nonetheless, several challenges are posed for future industrial applications, such as liquid slag discharge, unstable combustion and possible environmental issues. |
| first_indexed | 2024-12-11T16:56:48Z |
| format | Article |
| id | doaj.art-550a9c5259cb4554b6cbc88e749f36db |
| institution | Directory Open Access Journal |
| issn | 0160-4120 |
| language | English |
| last_indexed | 2024-12-11T16:56:48Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environment International |
| spelling | doaj.art-550a9c5259cb4554b6cbc88e749f36db2022-12-22T00:57:57ZengElsevierEnvironment International0160-41202022-08-01166107346Co-disposal and reutilization of municipal solid waste and its hazardous incineration fly ashYanqing Niu0Liping Wen1Xin Guo2Shi'en Hui3Corresponding author.; State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, PR ChinaState Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, PR ChinaState Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, PR ChinaState Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, PR ChinaCompared to landfill, MSW incineration (MSWI) not only eliminates its innate secondary pollution and land occupation, but also yields a net emission reduction. Regretfully, MSWI produces hazardous incineration fly ash (IFA) enriched with potentially toxic elements and dioxins. Given these, a harmless integrated scenario of co-disposal and resource reutilization of MSW and its hazardous IFA is proposed and subjected to technical and economic analysis. It introduces an IFA melting furnace, as an onsite modular integration, which serves as a bridge between the MSW incinerator and the commercial rock wool production line. The incinerator burns MSW for heating and electricity supply. The melting furnace further burns out the highly toxic dioxins adsorbed on IFA, as well as solidifying the potentially toxic elements into the molten slag, which substitutes for basalt as raw materials used for high value-added rock wool production. That achieves collaborative reduction, stabilization, harmlessness and resource reutilization of MSW as an energy source, and its IFA as energy-saving materials, as well as a net carbon emission reduction and high economic benefits. Even more exciting, as opposed to the serious losses of the other existing scenarios, it is profitable even without the feed-in tariff and fiscal subsidy, both that are the dominating income source of other scenarios including conventional MSWI & IFA landfill and demonstration MSWI with IFA melting & landfill. Discounted Cash Flow technique shows that the profit is ∼ 9.2 RMB per ton of MSW, and it increases with insulation price, feed-in tariff, and fiscal subsidy. With the feed-in tariff and fiscal subsidy, the existing two scenarios and the proposed harmless integrated scenario can produce revenue of 103.8, 98.1–110.5, and 145.0 RMB per ton of MSW, respectively. Nonetheless, several challenges are posed for future industrial applications, such as liquid slag discharge, unstable combustion and possible environmental issues.http://www.sciencedirect.com/science/article/pii/S0160412022002732MSWLandfillIncinerationMeltingHarmlessnessReutilization |
| spellingShingle | Yanqing Niu Liping Wen Xin Guo Shi'en Hui Co-disposal and reutilization of municipal solid waste and its hazardous incineration fly ash Environment International MSW Landfill Incineration Melting Harmlessness Reutilization |
| title | Co-disposal and reutilization of municipal solid waste and its hazardous incineration fly ash |
| title_full | Co-disposal and reutilization of municipal solid waste and its hazardous incineration fly ash |
| title_fullStr | Co-disposal and reutilization of municipal solid waste and its hazardous incineration fly ash |
| title_full_unstemmed | Co-disposal and reutilization of municipal solid waste and its hazardous incineration fly ash |
| title_short | Co-disposal and reutilization of municipal solid waste and its hazardous incineration fly ash |
| title_sort | co disposal and reutilization of municipal solid waste and its hazardous incineration fly ash |
| topic | MSW Landfill Incineration Melting Harmlessness Reutilization |
| url | http://www.sciencedirect.com/science/article/pii/S0160412022002732 |
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