Status of industrial pollution sources and impact on water environment

At present, industrial pollution is the main reason for water pollution in china. Industrial pollution sources mainly include industrial wastewater, industrial solid waste, industrial waste gas. Figure 1 shows that the total discharge of industrial wastewater per year are basically between 20 and 25 billion tons. Figure 2 shows that the total discharge of industrial COD per year are basically decreased, the total discharge in 1997 was 2.4 times in 2009.Table 1 shows that national industrial solid waste generation and utilization is increasing,but discharge decreasing, the total industrial solid waste generated across china from 1995 to 2009 was 17.359 billion t,the total discharge was 513.336 million t. Figure 3 shows that volume of industrial sulphur dioxide emission in 2006 reached the highest, and then gradually reduced. A large number of industrial pollutant emissions,it polluted directly or indirectly environment, in particular water environment in rural areas,which made a huge impact on the lives of the people.