|
With social progress and improvement of living standards , today's indoor air quality more and more people 's attention. As interior decoration , HVAC , and the use of a large number of household chemical products , indoor air pollution is worsening . Indoor air pollution not only undermined the people's working and living environment but also a direct threat to people's health . A wide variety of indoor air pollutants in governance , on the whole , China's means of disposing of indoor air pollution is still relatively backward, stays in the filter stage . Indoor air pollution is serious for the current situation , it is necessary to meet the indoor air purification studying a new method of handling characteristics , the new air purification products will also have a high market value of the application and promotion , and the heterogeneous photocatalytic oxidation undoubtedly is a competitive process technology . Tests using TiO 2 as a catalyst , through extensive testing , select the large specific surface area , strong adsorption capacity of the activated carbon fiber as catalyst carrier. Indoor pollution simulation device photocatalytic oxide oxides, sulfur oxides and volatile organic compounds and other harmful emissions research , by optimizing the catalyst loading method and photocatalytic oxidation reaction conditions to achieve efficient removal of harmful exhaust indoor purposes . Making an experiment simulated indoor unit , the simulation test device for gas distribution , in order to achieve the purpose of Interior air pollutants in the simulation test device , the initial concentration of reactants , gas residence time , light intensity, humidity, , plus oxidants such as on the removal efficiency. Test the first time to do additional oxidant hydrogen peroxide , which greatly promoted the reaction effect, making the equilibrium time was shortened. The results showed that at room temperature and atmospheric pressure and at 254nm UV light irradiation , the indoor common treatment efficiency of gaseous pollutants can reach about 90%. Trial also studied the life of the catalyst and regeneration methods . Tests showed that after a reasonable reproduction , the basic activity of the catalyst can be restored. Finally, on the basis of the previous test , the design of a new indoor air purifiers. Titania cheap and easy to get , stable, high photocatalytic activity can be used as bedroom , supermarkets, hotels , museums and other places of indoor air purification purposes.
|