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The Key Factors Influencing Main Water Pollutants Emission of Paper Industry in China
  
DOI:10.11981/j.issn.1000-6842.2014.04.51
Key Words:paper industry;main pollutants;total emission control;emission intensity;grey relevant degree method
Author NameAffiliation
王 强 环境保护部环境规划院, 北京, 100012 
刘雅玲 环境保护部环境规划院, 北京, 100012 
叶维丽 环境保护部环境规划院, 北京, 100012 
张文静* 环境保护部环境规划院, 北京, 100012 
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Abstract:
      Based on the data of production output, amount of main water pollutants (here refers to chemical oxygen demand (COD) and ammonia nitrogen) emission, amount of water in taking and consumption etc. of Chinas paper industry from 2005 to 2012, pollutants emission intensity and specific water consumption were calculated. The grey relevant degree method was used to analyze the correlation between those parameters and the total emission amount of main water pollutants of paper industry. Results shown that the production output yield of paper industry increased by 77% from 2005 to 2012 while the discharge of COD and ammonia nitrogen decreased 20% and 50% respectively. Meanwhile, the emission intensity per unit product also decreased significantly in 2012, COD and ammonia nitrogen emission intensity decreased to 5.69 kg/t of product and 0.19 kg/t of product, decreased by 77.9%and 71.6% respectively compared with 2005. Wastewater emissionper unit product, water consumption per unit product and average emission concentration of main water pollutants were most closely related to the pollutants emission in paper industry, which indicated that the improvements of production technology and wastewater treatment technology contributed greatly to the total pollutant emission reduction in paper industry.
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