ABSTRACT
In recent years, due to the covid-19, people have to spend more time indoors. That makes people pay more and more attention to the problem of indoor air quality. Research shows that indoor air pollution may be more harmful to people's health than outdoor pollution. With the development of air purification technology, people can already treat most of the pollution substances to ensure indoor air quality. However, the removal of tiny doses of VOCs from the air is always a technical challenge. This paper mainly summarizes many different ways to remove VOCs from the air and presents the working concept and significance of an air filtration device that uses activated carbon as its core. By comparing many different treatment technologies, the TiO2-coated activated carbon grain has the best efficiency to remove VOCs from the air.
