Abstract: In view of the problem that the complex and varied characteristics of wastewater in refining and chemical enterprises and the simple and extensive process operation mode was difficult to adapt to the increasingly strict discharge standards, a new integrated management mode of  “large sewage plant” was put forward. Through the three links of “sewage, activated sludge and waste gas” between sewage plants, and the two centralized modern and innovative management methods of “centralized management of pharmaceuticals and centralized control of operations”, we coordinated the environmental protection resources of the enterprises, maximized to extend the environmental protection radiation margin of the sewage plants, and achieved the unified management of the sewage system, the dynamic allocation of contaminant load and the utilization of internal resourcing, thus achieving a win-win result of environmental protection and economic benefits.

Key words: refining and chemical enterprises, large sewage plant, integrated management, emission reduction, resourcing