Water is the source of life and the foundation of all things. However, in the process of industrialization and urbanization, the discharge of industrial wastewater and domestic sewage is increasing, and the water pollution is becoming more and more serious, which brings great pressure to the ecological environment. Therefore, sewage treatment has become one of the urgent problems in today's society.

　　With the development of economy and the growth of population, the amount of sewage produced in China is increasing year by year, especially in the process of industrial production, a large number of harmful substances are directly or indirectly discharged into rivers, lakes and seas, resulting in serious eutrophication of water bodies and a large number of deaths of fish and other organisms; At the same time, the random discharge of untreated domestic sewage will also cause great damage to the surrounding environment and threaten human health and safety. According to relevant statistics, the annual economic losses caused by water pollution in China are as high as hundreds of billions of yuan.

　　Faced with such a severe situation, it is particularly important to strengthen sewage treatment. On the one hand, the government should increase investment, improve infrastructure construction and improve sewage treatment rate; On the other hand, it is necessary to guide all sectors of society to actively participate in it and form a good environmental protection atmosphere. In recent years, the state has issued a series of policies and regulations to regulate and guide this work, such as the Regulations on Urban Drainage and Sewage Treatment issued in 2015, which clearly stipulates the discharge standards and regulatory measures of various pollutants; In addition, "People's Republic of China (PRC) Environmental Protection Law" also severely punishes illegal sewage discharge, effectively curbing the phenomenon of some enterprises stealing and leaking discharge.

　　It is worth noting that scientific and technological innovation has played an important role in promoting sewage treatment. At present, there have been many efficient and energy-saving technical means on the market, such as membrane separation technology, which can achieve the removal rate of high-concentration organic matter above 90%; MBR (Membrane Bioreactor) process can significantly improve the effluent quality and meet more stringent discharge requirements. These new technologies can not only reduce operating costs, but also greatly reduce the risk of secondary pollution, which provides strong support for achieving the goal of sustainable development.

　　In short, as an indispensable part of ecological civilization construction, sewage treatment is related to everyone's quality of life and long-term interests. future, we should continue to uphold the concept of green development, constantly optimize and upgrade existing facilities and equipment, and actively explore more scientific and reasonable solutions to jointly build a beautiful home in China.