The sewage treatment plant itself belongs to the municipal utility management system, under the municipal department capital, its construction, operation and so on by the city management department is responsible for the management of the environmental protection department is only responsible for the management of sewage treatment plant into the water of the qualification test, the general domestic sewage treatment plant is basically a municipal investment.
In the last decade or so, China's sewage treatment market has made considerable progress in the field, the original sewage treatment plant is also the majority of the launch of the enterprise upgraded, China's sewage treatment plant nature of the simple, there are attributed to the institutions, usually sewage treatment plants are state-owned. Sewage treatment plant equipment, mainly sewage pumps, agitators, flow meters, aeration equipment, water quality testing and analytical instruments, input level meter, ultraviolet disinfection equipment, ozone generators, filter modules and so on. Sewage treatment process: first primary treatment of sewage; then secondary treatment of sewage, activated sludge method; and finally tertiary treatment of sewage.