At the beginning of the 21st century, with the rapid development of economy and the acceleration of urbanization, the problem of environmental pollution has become increasingly prominent, especially air pollution has become one of the major bottlenecks restricting sustainable development. Faced with this challenge, countries all over the world have taken actions, starting from legislation, technological innovation and public awareness, and jointly promoted the macro-leap in the field of air purification.

First, the green revolution under the guidance of policies

In recent years, China, the United States and other major economies have successively introduced a series of policies and measures aimed at improving air quality. For example, since the People's Republic of China (PRC) Air Pollution Prevention and Control Law was revised and implemented in 2018, it has put forward stricter requirements for industrial emission standards; The Clean Power Plan signed by US President Biden is dedicated to reducing the use of fossil fuels and promoting the development of clean energy. These laws and regulations not only provide a legal basis for controlling air pollution, but also stimulate the enthusiasm of all sectors of society to participate in environmental protection.

Second, scientific and technological innovation helps defend the blue sky

Science and technology is the key weapon to solve environmental problems. Researchers continue to explore efficient and low-cost purification technologies, such as nano-material adsorption, biofilter treatment and other new methods, which show great potential in removing harmful substances such as PM2.5 and SO2. At the same time, the application of intelligent monitoring system and big data analysis platform makes it possible to grasp the air quality status in real time, laying a solid foundation for precise policy.

Third, the whole people take action to build a beautiful home together

In addition to government-led and technical support, it is equally important to raise citizens' awareness of environmental protection. Through various publicity and education activities, people are encouraged to practice a low-carbon lifestyle, such as choosing public transport and reducing the consumption of disposable plastic products, and a good social trend has gradually formed. In addition, volunteer organizations actively participate in afforestation, garbage sorting and other work, contributing to improving the ecological environment.

To sum up, air purification, as a complex system engineering, needs the joint efforts of the state, enterprises and individuals to make substantial progress. At present, we are witnessing the key battle in this grand plan of environmental protection-air purification is welcoming unprecedented changes. In the future, with the introduction of more innovative measures and the extensive participation of the whole society, it is believed that mankind will usher in a fresher and more pleasant living environment.