Present situation of urban sewage treatment in China

The rapid development of China's sewage treatment industry is also facing many problems and challenges, which are reflected in the following aspects, ① lack of construction funds Construction of sewage treatment plants requires a lot of capital investment, so the lack of funds has become a major obstacle to limit sewage treatment. With the development of China's economy and the improvement of people's environmental protection awareness, more and more funds will be invested in the construction of urban sewage treatment plants. (2) The high operating costs of sewage treatment plants lead to a lot of equipment in sewage treatment plants. In response to this problem, the government has increased the capital investment in sewage treatment plants, but also reformed the operating mechanism accordingly, and diversified management models such as :TOT model.

The managed operation mode, BOT mode, etc., will be the future development trend of China's urban sewage treatment plant. (3) The water treated by the sewage treatment plant is discharged directly, which causes pollution of the downstream river on the one hand, and wastes the reusable water resources on the other hand. For the utilization of recycled water, China also needs to continuously introduce foreign advanced technology and develop a variety of ways. (4) Although the early construction of urban sewage treatment plants has a good effect on the removal of organic matter and suspended matter, but the removal effect of nitrogen and phosphorus is not obvious. It has not reached the current discharge standard for urban sewage in China - "Pollutant Discharge Standard for Urban sewage Treatment Plants" (GB18918-2002). At present, most sewage treatment plants in our country face the problem of upgrading standards. How to improve the removal rate of nitrogen and phosphorus nutrients has become a hot issue in the operation and control of municipal sewage plants.

The rapid development of China's sewage treatment industry is also facing many problems and challenges, which are reflected in the following aspects, ① lack of construction funds Construction of sewage treatment plants requires a lot of capital investment, so the lack of funds has become a major obstacle to limit sewage treatment. With the development of China's economy and the improvement of people's environmental protection awareness, more and more funds will be invested in the construction of urban sewage treatment plants. (2) The high operating costs of sewage treatment plants lead to a lot of equipment in sewage treatment plants. In response to this problem, the government has increased the capital investment in sewage treatment plants, but also reformed the operating mechanism accordingly, and diversified management models such as :TOT model.

The managed operation mode, BOT mode, etc., will be the future development trend of China's urban sewage treatment plant. (3) The water treated by the sewage treatment plant is discharged directly, which causes pollution of the downstream river on the one hand, and wastes the reusable water resources on the other hand. For the utilization of recycled water, China also needs to continuously introduce foreign advanced technology and develop a variety of ways. (4) Although the early construction of urban sewage treatment plants has a good effect on the removal of organic matter and suspended matter, but the removal effect of nitrogen and phosphorus is not obvious. It has not reached the current discharge standard for urban sewage in China - "Pollutant Discharge Standard for Urban sewage Treatment Plants" (GB18918-2002). At present, most sewage treatment plants in our country face the problem of upgrading standards. How to improve the removal rate of nitrogen and phosphorus nutrients has become a hot issue in the operation and control of municipal sewage plants.