Today in the 21st century, with the rapid economic development and sustained population growth, the problem of water pollution has become increasingly serious, which has become one of the important factors restricting sustainable development. As a key link of environmental protection, sewage treatment is not only related to the effective utilization of water resources, but also a necessary condition for achieving ecological civilization construction and promoting harmonious social development. Therefore, it is of great significance to define and implement scientific and reasonable sewage treatment standards and measures for achieving environmental protection goals at the national and even global levels.

I. Ensuring public health and safety

Clean water is the foundation of human existence. Untreated or improperly treated domestic sewage and industrial wastewater are directly discharged into the natural environment, which will lead to serious pollution of drinking water sources and then threaten human health. Strict implementation of sewage treatment standards can effectively remove pathogenic microorganisms, harmful chemicals and other pollutants in water, ensure the quality of effluent to meet relevant health indicators, and provide people with a safe and reliable water environment.

Second, protect the ecological environment balance

Water pollution will destroy the ecosystem structure of rivers and lakes and affect biodiversity. Reasonable planning and management of sewage treatment facilities and the use of advanced technical means such as biological purification and constructed wetlands can not only improve the treatment efficiency, but also reduce the impact on the surrounding environment and maintain the stability and integrity of the ecosystem. At the same time, properly treated reclaimed water can be used in agricultural irrigation, urban greening and other fields, realizing the recycling of resources.

Third, promote green development and transformation

Faced with the challenges brought by climate change, countries have set emission reduction targets and are committed to building a low-carbon economic system. The sewage treatment industry should actively respond to this call, and explore new ways of energy saving and emission reduction on the premise of ensuring the water quality to meet the standard. For example, biogas produced by anaerobic digestion technology is used as clean energy; Optimize operation parameters to reduce energy consumption; Strengthen sludge disposal and recycle organic fertilizer. These measures will help reduce the pressure of greenhouse gas emissions and help the economy and society to change to a greener direction.

In a word, sewage treatment is shouldering multiple missions-to meet current needs and consider long-term interests, to solve immediate problems and to guard against potential risks. Only by insisting on scientific decision-making and precise policy-making, can every drop of clear water play its due value and jointly draw a grand blueprint of beautiful China.