The client of Chinanews.com, June 10th. The State Council Information Office held a press conference on the 10th. Zhao Yingmin, deputy minister of the Ministry of Ecology and Environment, introduced the relevant situation of the Second National Pollution Source Census Bulletin. From the perspective of water pollutant discharge nationwide, the chemical oxygen demand is 21.4398 million tons, the total nitrogen is 3.0414 million tons, and the ammonia nitrogen is 963,400 tons. From the perspective of emissions, the Yangtze River, Pearl River and Huaihe River basins have large watershed areas and many provinces. The discharge of pollutants such as chemical oxygen demand, total nitrogen and ammonia nitrogen is large; from the perspective of emission intensity, the Haihe, Liaohe and Zhunhe rivers The pollutant discharge intensity of unit water resources in the river basin is relatively large.