Abstract
The benefit evaluation of industrial symbiosis in industrial parks plays an important part in park management. This study aims to propose a comprehensive assessment method for industrial symbiosis benefits by combining resource productivity and considering the impact of emissions in emergy analysis. Besides, classify industrial symbiosis according to the exchange of materials, water, and energy to conduct an in-depth analysis of diverse symbiosis. The case study of an eco-industrial park in China shows that industrial symbiosis has a positive effect in many aspects, including increasing the productivity of direct input materials, water, and energy by 0.33, 36.50, and 0.38 times respectively, reducing the emission impact by 30.91%, saving economic investment equal to 30.18% of gross domestic product, reducing the environmental load rate by 23.88% and increasing the sustainable development index by 32.74%. Suggestions on building a symbiosis network are put forward by comparing the contributions of symbiosis types. This study provides park managers with a symbiosis classification and a benefit evaluation tool to build symbiosis networks and make policies for sustainable industrial development.
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