عنوان مقاله [English]
The main problem of traditional methods of environmental impact assessment is that in most of the existing algorithms and methods, such as Leopold matrix, Folchi method and RIAM matrix, the main attention is to the destructive effects of the proposed plan and the advantages of the plan are less noticeable. This has led to a permanent challenge between environmental organizations and industrial stakeholders. DEA is a new approach to assessing the industrial units also considers the positive economic and social impacts of the project and provides a comprehensive assessment of the industrial unit. With this approach, the environmental impacts of an industrial unit have be considered as inputs and its positive economic and social impacts considered as the outputs of the models. Therefore, the problem of impact assessment change into a DEA model. In the present study, the Alborz Sharghi Coal washing plant in northern Iran has been considered as a case study, and 19 plant activities and 11 environmental components have been used to evaluate the effects of the plant. To solve the problem, two commonly used DEA approaches, called BCC and CCR, have been used. The results showed that the components of "ecology" and "area landscape" as the most critical components should be considered seriously. Also, drawing of the "potential improvement" diagram in the DEA method is an effective tool for determining the high risk potential activity of the factory and using in factory development plan. Moreover, using the BCC model with maximize-output approach showed that some of the plant activities such as “Input feed dump”,” Wastewater from the plant " and " Water consumption of the plant " had the most differences with optimal mode and in future development plans these components should be considered. Finally, it can be concluded that, assessing the environmental impact of the coal washing plant with BCC maximize-output approach, is closer to the concept of sustainable development.