广西造纸行业主要水污染物排放特征分析

Emission Characteristics Analysis of Main Water Pollutants of Paper Industry in Guangxi

关键词:  广西  造纸行业  水污染物  总量控制  排放强度

Key Words:Guangxi  paper industry  water pollutants  total emission control  emission intensity

摘要:本文分析了2016—2021年广西造纸行业主要水污染物的排放特征和排放强度，探讨了广西造纸行业水污染物时空分布，揭示了存在的问题并提出对策建议。结果表明，2016到2021年间广西造纸行业纸和纸板产量增加了40.‍1%，主要水污染物排放量和排放强度却显著降低。2021年COD_Cr和氨氮的单位产品排放强度较2016年分别降低了63.0%和81.8%。南宁市、柳州市和贵港市的造纸行业水污染排放强度高于全区平均水平。中、小型造纸企业排放强度明显高于大型造纸企业。广西造纸行业生产工艺水平仍有提升空间。建议从总量控制和强度控制两方面开展水污染物减排工作。

Abstract:Discharge characteristics and intensity of main water pollutants of paper industry from 2016 to 2021 in Guangxi Zhuang Autonomous Region were analyzed， and time-space distribution of water pollutants in Guangxi paper industry was discussed. The problems of water pollutants emission of Guangxi paper industry were pointed out and countermeasures and suggestions were provided. The results showed that the production of Guangxi paper industry increased 40.1% from 2016 to 2021 while the discharge amount and emission intensity of water pollutants significantly decreased. The discharge of COD_Cr and ammonia nitrogen decreased 63.0% and 81.8%， respectively. The emission intensities of water pollutants of paper industry in Nanning， Liuzhou， and Guigang were higher than the average level of Guangxi. The emission intensities of small and medium-sized enterprises were significantly higher than that of large enterprises in Guangxi paper industry. The production process of paper industry still had great potential for improvement. The reduction of water pollutants should be carried out from two aspects： total amount control and intensity control.