| 废物处理方式对工业系统可持续性影响的能值分析 |
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| 引用本文： | 张小洪,邓仕槐,肖鸿,张延宗.废物处理方式对工业系统可持续性影响的能值分析[J].资源科学,2010,32(9):1806-1813. |
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| 作者姓名： | 张小洪 邓仕槐 肖鸿 张延宗 |
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| 作者单位： | 四川农业大学资环学院农业环境工程重点实验室,雅安,625014 |
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| 基金项目： | 国家自然科学基金项目(编号：50410719)。 |
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| 摘 要： | 废物的不同处理方式对工业系统的可持续性影响不一样。在考虑了工业系统内废物处理、循环、系统
间废物交换和污染物的排放对环境和经济影响的基础上，提出了能反映工业系统特点的能值分析方法和相应的指
标体系，即能值节省率( PES)、产品转换率( PT)、能值产出率( EYR)、环境负荷率( ELR)、能值可持续指数( ESI)。以
攀枝花某硫酸生产企业和某钛白粉生产企业为案例进行了分析。废物交换前硫酸生产企业的PES、PT、EYR、ELR
和ESI分别为9.57%、8.52×108 sej/g、3.29、5.56和0.59，钛白粉生产企业这五个指标分别为3.59%、10.40×108 sej/g、
2.56、26.19和0.10;废物交换后硫酸生产企业的这五个指标分别为23.96%、7.22×108 sej/g、3.83、5.49和0.70，钛白粉
生产企业这五个指标分别为13.25%、7.72×108 sej/g、2.62、17.62和0.15。结果表明，这两个工业系统间的废物交换
可提高它们的可持续性。最后针对它们目前存在的问题提出了相应的建议。
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| 关 键 词： | 能值分析 工业系统 废物交换 可持续性 |
Emergy Evaluation of Impacts of Waste Treatment Methods on the Sustainability of the Industrial System |
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| ZHANG Xiaohong,DENG Shihuai,XIAO Hong and ZHANG Yanzong.Emergy Evaluation of Impacts of Waste Treatment Methods on the Sustainability of the Industrial System[J].Resources Science,2010,32(9):1806-1813. |
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| Authors: | ZHANG Xiaohong DENG Shihuai XIAO Hong and ZHANG Yanzong |
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| Institution: | Key Laboratory for Agricultural Environmental Engineering, College of Resource and Environment,Sichuan Agricultural University, Yaan 625014, China |
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| Abstract: | Exhaustion of some natural resources, such as raw mineral materials and fossil energy,
has been imposing increasing restrictions on economic development; meanwhile, massive
discharge of pollutants has also been making our environmental quality degraded. As such,
enhancing resources efficiency and treating wastes play a fundamental role in promoting social and
economic sustainable development. However, waste treatment methods have important impacts on
resources efficiency of the industrial systems, which can finally affect the sustainability of
industrial systems. This paper considers those environmental and economic impacts from waste
treatment and recycling in industrial systems, waste exchanges among industrial systems, and
waste discharge. The authors then put forward an improved emergy index system for evaluating the
sustainability of industrial systems, including Percent of eMergy Saving (PES), Product
Transformity (PT), eMergy Yield Ratio (EYR), Environmental Loading Ratio (ELR), and eMergy
Sustainability Index (ESI). A sulfuric acid enterprise and a titanium dioxide powder enterprise in
Panzhihua City, Sichuan Province, were analyzed through examining such indicators. Values of
PES, PT, EYR, ELR and ESI for the sulfuric acid enterprise were found to be 9.57%, 8.52×108 sej/
g, 3.29, 5.56 and 0.59, respectively, and values of the five indicators for the titanium dioxide
powder enterprise were 3.59%, 10.40×108 sej/g, 2.56, 26.19 and 0.10, respectively, before waste
exchanges. Values of the five indicators for the sulfuric acid enterprise were 23.96%, 7.22×108 sej/
g, 3.83, 5.49 and 0.70, respectively, and values for the five indicators for the titanium dioxide
powder enterprise were 13.25%, 7.72 × 108 sej/g, 2.62, 17.62 and 0.15, respectively, after waste
exchanges. Results showed that waste recycling in the two industrial systems and waste exchanges
between them can enhance their resources efficiency, mitigate environmental pressures, and
strengthen their sustainability because waste exchanges reduce inputs of fresh resources. This saves
production costs and cuts emissions. Therefore, waste exchanges tend to lead to a mutually
beneficial relationship between the two enterprises. However, waste exchanges between them were
very limited for their sustainability improvement due primarily to a very small portion of wastes
being reused and their great dependence on non-renewable resources. Consequently, the two
enterprises need to innovate continuously in technologies and create more opportunities for waste
exchanges. Meanwhile, it was indicated that the titanium dioxide powder enterprise benefits more
than does the sulfuric acid enterprise from waste exchanges, so the titanium dioxide powder
enterprise may compensate the sulfuric acid enterprise through some way in order to maintain this
type of mutually beneficial relationship for a long time. This study can provide helpful reference
for improving the comprehensive performance of industrial parks. |
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| Keywords: | Emergy analysis Industrial system Wastes exchanges Sustainability |
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