With the rapid development of society and economy and the continuous growth of population, the shortage of water resources and water pollution are becoming more and more serious, which not only threatens the quality of human life, but also causes great damage to the ecological environment. Therefore, it has become a global consensus to take effective measures to protect water resources and control water pollution. Among them, sewage treatment technology based on environmental protection principle, as one of the key means to solve this problem, is being paid more and more attention by governments and scientific research institutions in more and more countries and regions.

First, the importance of sewage treatment

Sewage treatment refers to the process of removing harmful substances from sewage by physical, chemical or biological methods, so that it can meet the discharge standards or reuse conditions. It is of great significance for preventing water pollution, improving urban environment and promoting sustainable development. Especially in the treatment of high-concentration pollutants such as industrial wastewater and domestic sewage, efficient sewage treatment technology can significantly reduce pollutant emissions and reduce the impact on natural water bodies.

Second, sewage treatment technology under the guidance of environmental protection principles

1. Resource recovery and recycling: Modern sewage treatment is not only limited to the removal of pollutants, but also pays more attention to the recovery of valuable resources (such as heavy metals and phosphorus) from wastewater, and realizes the recycling of water resources through appropriate technical means to reduce the demand for fresh water.

2. Low energy consumption and high efficiency treatment process: The development and application of new sewage treatment technology and equipment with low energy consumption and high efficiency is the key direction of current research. For example, membrane separation technology shows great potential in the field of reclaimed water reuse because of its high efficiency and energy saving; Anaerobic digestion technology can produce renewable energy-biogas while treating organic wastewater.

3. Eco-friendly treatment method: The method of sewage treatment by simulating natural ecosystem such as constructed wetland system and stabilization pond is becoming more and more popular. This kind of method is not only low in cost and easy to maintain, but also helpful to build a harmonious artificial-natural composite ecosystem and improve regional biodiversity.

4. Construction of intelligent management platform: With the help of information technologies such as Internet of Things and big data analysis, the intelligent water management system can realize real-time monitoring of sewage treatment facilities and prediction of water quality change trend, thus providing scientific basis for optimizing operation management.

Third, the conclusion

To sum up, following the principle of environmental protection to carry out sewage treatment is not only an effective way to deal with the water crisis, but also an important measure to promote the green development of economy and society. future, we expect more innovative and comprehensive sewage treatment technologies to be developed and widely used in practice to jointly protect the precious water resources endowed by Mother Earth.