With the acceleration of industrialization and urbanization, the problem of water pollution has become increasingly serious, which has become one of the major obstacles restricting sustainable development. In order to meet this challenge, governments and international organizations have strengthened their investment and legislation on environmental protection, especially in the field of sewage treatment. This paper aims to explore how sewage treatment technology and its industry can achieve all-round development under the promotion of environmental protection policy, and analyze its positive impact on social economy.

First, policy guidance is the key

In recent years, the government of China has attached great importance to the protection of ecological environment, and issued a number of laws and regulations to guide and promote the development of sewage treatment industry. For example, the Environmental Protection Law of People's Republic of China (PRC), the Regulations on Urban Drainage and Sewage Treatment and other laws and regulations clearly stipulate the discharge standards and facilities construction requirements; At the same time, the establishment of special funds to support the implementation of related projects has provided a strong guarantee for the development of the industry.

Second, the steps to promote technological innovation

Scientific and technological progress is an important driving force to promote the improvement of sewage treatment level. At present, many scientific research institutions and enterprises at home and abroad are committed to developing new processes and technologies with high efficiency and energy saving, such as biofilm reactor and advanced oxidation process. These innovations not only improve the treatment efficiency and reduce the operation cost, but also can better remove refractory pollutants and ensure that the effluent quality meets or exceeds the national standards.

Third, the market mechanism plays a role

The market-oriented operation mode plays an important role in improving the efficiency of resource allocation. By introducing competition mechanism and encouraging social capital to participate in investment and operation, the pressure on public finance can be effectively alleviated and the pace of infrastructure construction can be accelerated. In addition, the implementation of differentiated charging system is also conducive to the formation of a good incentive and restraint system, prompting enterprises and individuals to enhance their awareness of water conservation and emission reduction.

Fourth, the social benefits are remarkable

A good water environment is an important part of people's good life. The sewage treatment capacity has been continuously enhanced, urban black and odorous water bodies have been effectively treated, the safety of drinking water has been effectively guaranteed, and the quality of life of residents has been significantly improved. At the same time, clean water also provides reliable support for agricultural irrigation, industrial production and other activities, and promotes coordinated economic and social development.

In short, with the combination of macro-control at the national level and the active participation of micro-subjects, China's sewage treatment industry is entering the fast lane. In the future, we have reason to believe that with the joint efforts of all parties, we will build a more perfect and efficient governance system and contribute to the construction of beautiful China.