With the development of the chemical industry park, the environmental risk of the chemical industry park has gradually emerged. According to the survey data of the chemical industry park working committee of China Petroleum and Chemical Industry Federation, there are less than 100 chemical industry parks in China that can really be planned and constructed according to the concept of integration, and have a certain level of safety and environmental protection management and effective response measures, less than 1 / 10 of the total number of chemical industry parks in China. Therefore, while actively advocating chemical enterprises to enter the park, we have to face many small and medium-sized parks with weak infrastructure and uneven management level.
Chemical wastewater has the characteristics of complex components, high toxicity and serious matrix imbalance, which is the difficulty and hot spot in the field of wastewater treatment. For a long time, there are many problems in the treatment and reuse of chemical industry wastewater at home and abroad, such as lack of applicable technology, complex process system, large project investment and high operation cost. At present, the existing biochemical, physicochemical, membrane separation and other technologies are difficult to meet the requirements of wastewater treatment in the park, especially in the built wastewater treatment facilities in the park, low-cost biological treatment technology accounts for more than 95%, but not more than 5% can operate normally.