Intensification of Photocatalytic Process for IndustrialWastewater Treatment with A'Solid'UV Reactor

摘要

The photoreactors are usually set up with line UV lamps, which are difficult to make any breakthroughs on optimization of mass transfer, photon transfer and surface refreshment of photocatalyst. In this work, a concept of "solid" UV source as collectives of microwave-assisted UVbulbs fixed in a glass vessel is put forward to design a new photoreactor. Two kinds of organic solutions, methyl organic aqueous solution and a real pesticide wastewater, were used to evaluate the photocatalytic performance of the "Solid" UV photocatalytic reactor. The results indicate that the degradation performances of organic contaminants in water depend on the initial concentration of contaminants, irradiation time and intensity, and TiO2 dosage. It is important that "Solid" UV reactor can intensify the degradation of organic contaminants in wastewater due to the effective integration between microwave and microwave electrodeless (MEDL) discharge. It seems that "Solid" photocatalytic reactor is a good alternative to scale up the photocatalytic process in wastewater treatment.