The chemical industry plays an important role in the national economy of many countries, and is the basic and pillar industry of many countries. The development speed and scale of chemical industry have a direct impact on all sectors of the society and economy. The annual output value of chemical products has exceeded USD 1500 billion in the world. The chemical industry has various categories, complex processes and diverse products. It is a major polluter because the pollutants discharged from production are of numerous varieties, large quantity and high toxicity. In addition, the chemical products may produce a large number of toxic substances during their processing, storage, use and waste disposal, endangering the ecological environment and human health. The sustainable development of chemical industry is of great practical significance to the economic and social development of human beings.