With the acceleration of industrialization and urbanization, environmental pollution is becoming more and more serious, especially air pollution. The pollutants in the air not only affect people's quality of life, but also pose a threat to human health. Facing the severe environmental challenges, it is urgent to develop efficient, safe and green air purification technology. In recent years, a series of technical products with outstanding purification effect and excellent environmental protection performance came into being, which provided new ideas and methods for solving air quality problems.

First, the development status of air purification technology

At present, the common air purification equipment on the market mainly includes mechanical filtration, electrostatic adsorption and photocatalytic oxidation. They remove pollutants such as suspended particulate matter (PM2.5), harmful gases and microorganisms in indoor air through different principles. Especially, the air purifier with HEPA filter is excellent in capturing fine particles; The adsorbents based on activated carbon or molecular sieve materials can effectively absorb volatile organic compounds (VOCs) such as formaldehyde and benzene series.

Second, the application of new air purification technology

1. Nanotechnology: Using nanomaterials as catalysts or carriers can greatly improve the efficiency of air purification. For example, titanium dioxide (TiO2 _ 2)-based photocatalyst can decompose toxic gases under illumination conditions, and its surface is easy to clean and regenerate, thus realizing long-term stable operation.

2. Biodegradation method: Some specific kinds of bacteria and plants have good degradation ability for certain types of VOCs. Introducing these organisms into the air purification system can not only effectively remove low-concentration pollutants, but also maintain a good ecological balance.

3. Intelligent control technology: Combining the Internet of Things (IoT) technology and big data analysis, modern air purification equipment can automatically adjust the working mode according to actual needs, such as wind speed, running time and other parameters, so as to achieve the purpose of energy saving and emission reduction.

Third, look forward to the future

Although the existing air purification technology has achieved remarkable results, there are still problems such as high cost and complex maintenance that need to be solved urgently. The future research direction should pay more attention to improving the purification efficiency and reducing the cost, and popularize it to a wider social level. In addition, strengthening public education is also an indispensable part of improving air quality. Only when everyone participates in environmental protection can we truly realize the beautiful vision of blue sky and white clouds.

In a word, air purification technology is not only one of the important means to deal with the current environmental crisis, but also a key factor to promote the sustainable development of society. We look forward to more innovative achievements, jointly protecting the earth's homeland and creating a fresh and healthy living environment.