Dealt with the growing depth of macrophytes roots, spatial distributions of microorganisms and enzyme in artificial wetland and comparison of removal rates of contaminants in different depths of artificial wetlands, the better purifying space in artificial wetland wastewater treatment system has been discussed.

Study on air purification by plasma combined with photocatalysis;

Nanocatalytic techniques for air purification;

Application of TiO 2 in photocatalytic air purification and antibacterial materials;

Introduce ACF load nanometer TiO2 several main methods,and the sole factors which influence to TiO2/ACF adsorption photochemical catalysis purification air performance,such as the TiO2 surface hydroxyl content,the crystal compose,the thin film crystal grain size,thin film thickness,TiO2/ACF relative surface and so on,are analized.

Studies on antibacterial and antiviral property of TiO_2 nanometer spray in air cleaning;

Application of electrostatic precipitation principle in the technique of air cleaning;

Selection of air cleaning means for hospital environment;