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统计了2005~2012年我国造纸工业的产品产量、主要水污染物(COD和氨氮)排放量、取水量、用水量等数据,分析了我国造纸工业单位产品的用水量和主要水污染物排放强度,并采用灰色关联度分析法对各要素与主要水污染物排放量之间的关联度进行了探讨。结果显示,2005~2012年间我国造纸工业主要水污染物的排放强度显著降低,2012年COD和氨氮的排放强度分别为5.69kg/t产品和0.19 kg/t产品,相比2005年分别降低了77.9%和71.6%。与造纸工业主要水污染物排放量变化最密切的指标是单位产品废水排放量、单位产品取水量及主要水污染物排放强度,说明造纸工业生产工艺与污染治理水平的提升对主要水污染物排放量的降低有显著作用。
Statistics 2005-2008 China’s paper industry’s product output, the main water pollutants (COD and ammonia nitrogen) emissions, water intake, water consumption and other data, analysis of China’s paper industry, water consumption per unit of product and the main water pollutant emission intensity , And the degree of correlation between each element and the discharge of major water pollutants was discussed by using gray relational analysis method. The results showed that the emission intensity of major water pollutants in China’s paper industry decreased significantly between 2005 and 2012. The emission intensity of COD and ammonia nitrogen in 2012 was 5.69 kg / t and 0.19 kg / t respectively, down by 77.9 % And 71.6%. And the paper industry’s main water pollutant emissions change the most closely indicators of wastewater discharge per unit product, unit product intake and discharge of major water pollutant intensity, indicating that the paper industry production processes and pollution control to enhance the level of major water pollutant emissions The decrease in volume has a significant effect.