1, centralized processing system. Centralized treatment system mainly refers to small sewage treatment equipment, constructed wetland or land treatment system. Through a series of physical, chemical and biological measures to reduce pollutants in sewage, so as to achieve the purpose of sewage purification and resource utilization.
2. Decentralized processing system. Decentralized treatment system is a highly centralized and miniaturized sewage treatment plant. It adopts a combination process of various physical, chemical or biological measures, and highly integrates various treatment technologies in a small space. With the development of various processes and technologies, there are more and more products of decentralized treatment system. The emergence of user-type sewage treatment equipment has achieved revolutionary cost reduction of treatment equipment, which has been continuously reported by many official media and will be promoted nationwide in the future.