基于DEA模型的工业园区企业环境绩效水平研究

Research on Environmental Performance Level of Industrial Park Enterprises Based on DEA Model

建立一套企业环境绩效评估的指标体系,并运用DEA模型对南京市某工业园区内具有代表性的15家企业的环境绩效水平进行实证研究。研究结果表明,有3家企业达到了DEA规模有效;其余12家企业均为DEA规模无效,12家非DEA有效企业各污染物排放削减量分别为废水48252.009t/a,废气2291.873万m^(3)/a,COD 5.075t/a,氮0.747t/a,VOCs 7.811t/a,说明污染物减排潜力较大。采用DEA模型可较好地评估企业环境绩效水平,为园区企业环境绩效优化控制提供一定的理论依据。

An indicator system have been established for evaluating the environmental performance of enterprises,and the DEA model was use to study the environmental performance levels of 15 representative enterprises in an industrial park in Nanjing.The results indicate that three companies have achieved DEA scale efficiency,while the remaining 12 enterprises are all DEA scale ineffective.The emission reduction of 12 non-DEA effective enterprises are 48252.09 t/a for wastewater,22.91873 million standard m/a for exhaust gas,5.075 t/a for COD,0.747 t/a for ammonia nitrogen,and 7.811 t/a for VOCs respectively,which indicating a great emission reduction potential.Using DEA model can effectively evaluate the level of environmental performance of enterprises,and providing theoretical basis for optimizing and controlling the environmental performance of park enterprises.