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中国省际工业用水效率分析Water Use Efficiency in China’s Industrial Sector: A Regional Study
林新辉, 陈优优, 许濒尹, 李太龙
工业用水, 新鲜水, 循环用水, 废水, 效率Industrial Water, Fresh Water, Recycled Water, Waste Water, Efficiency
《Advances in Applied Mathematics》, Vol.4 No.3, 2015-08-24
This paper aims to study the water use efficiency in the industrial sector with respect for regional characteristics in China. Based on the principle of directional distance function, four different mod-els (efficiency model, fresh water model, waste water model and substitution model) are presented to analyze the efficiency level of industrial water use in each province of China (mainland except Ti-bet), to measure the potential reduction on fresh water use and waste water discharge, and to show how much fresh water can be substituted with recycled water. The results are obtained considering the provincial characteristics such as water endowments, mineral resources and industrial struc-tures. Provinces which have abundant mineral resources or sufficient water resources generally utilize water inefficiently in the industrial sector, and can increase recycled water use efficiency greatly. Developed provinces such as Beijing and Shanghai have high water use efficiency in the in-dustrial sector. In light of these results, policy implications are provided for China’s government.