With the acceleration of society, industrialization and urbanization, air quality has increasingly become one of the important factors affecting people's quality of life and health. Facing the severe air pollution situation, how to effectively purify the air and improve the environmental quality has become a key topic of concern to all sectors of society. Therefore, it is particularly important to build a scientific, reasonable, efficient and energy-saving air purification system. This paper will discuss this topic from many angles and put forward corresponding suggestions.

I. Technical level

1. Source control: Reducing pollutant discharge is the most direct and effective measure. This includes promoting the use of clean energy (such as solar energy, wind energy, etc.), limiting the development of highly polluting industries, and improving the emission standards of automobile exhaust.

2. Terminal treatment: For the air pollutants that have been generated, it is necessary to remove or transform them by installing efficient filtration equipment. For example, electrostatic precipitator and bag precipitator are used in industrial production; Set up PM2.5 air purification devices in residential areas.

3. Natural restoration: Afforestation and greening projects can absorb carbon dioxide and release oxygen, which is helpful to improve the air quality in the region. At the same time, wetland protection projects can also promote the self-purification ability of water bodies and indirectly improve the surrounding air quality.

Second, policy support

The government should introduce relevant policies and regulations to provide a strong guarantee for the construction of air purification system. For example, formulate strict environmental protection laws and regulations and increase penalties for illegal sewage discharge; Set up special funds to support scientific research institutions to develop new air purification technologies and products; Encourage enterprises to invest in building green factories.

Third, public participation

Strengthening citizens' awareness of environmental protection is the key to achieving the goal of good air quality. Various forms of publicity activities can be held to popularize the knowledge of air pollution prevention and control; Establish a volunteer team to participate in community cleaning activities; Guide consumers to choose a low-carbon lifestyle and other methods to stimulate the enthusiasm of more people.

In a word, building a perfect air purification system is a systematic project, which involves not only the progress of science and technology, but also the support of policies and the joint efforts of the general public. Only when the whole society realizes the importance of protecting the environment can we really enjoy the fresh and pleasant air and create a better future together.