Evaluation of Ecological Efficiency of Circular Economy and Coal Eco-Industrial Park

This thesis adopts the methods of input-output analysis and energy analysis and uses inter-enterprise industrial chain as its basis and the material and energetic circular path of the industry park as its thread to analyze the enterprise structure of Dongjing Industrial Park and describe the symbiotic relationship between enterprises in the industrial park. The ecological efficiency of the industrial park was evaluated by calculating direct destruction coefficient of production enterprises and direct consumption coefficient of environmental sectors as well as energy intensity, energy self-sufficiency rate, environmental load rate and sustainable development capacity. Through analysis evaluation, the conclusion was come that the more improved the industrial chain is, the higher utilization rate is and the better encapsulation of energy cycle is. Therefore, the eco-industrial park plays a significant role in protecting the environment, saving resources and increasing energy utilization rate.