Catalytic Ozonation Of Phenol By Nano-TiO₂ Immobilized On Activated Carbon

The wastewater with Phenol mainly comes from tarfy,coal gas,oil refining and the producting process of chemical engineering and medicine manufacturing which use the Phenol or the Phenoxide as the material.It comes wide,amountly.It is very dangerous,is one of the poisonous and harmful waste waters that all countries list as the point to solve. Now ,American,France,English and Japan have used it to treat the wastewater which contains Phenol. Among them, the metals catalyst ozone oxidizing was a new technique that was developed just in the last few years. The metals catalyst ozone oxidizing uses the solidly metals( the metals salt and its oxide) as the catalyst, strengthen ozone oxidizing reaction. The text firstly use O₃ / TiO₂-mounted activated carbon to treat the wastewater with Phenol.It uses the catalyst effective of the TiO₂ to accelerat the ozone oxidizing to product ·H0,raise oxidizing efficiency to the organic. Comparing with O₃/ activated carbon,it has a better removing efficiency,It raises about 10% or so.When the Phenol density is 100 mg/ L, its volume is 150mL,the air discharge with ozone is 0.05 m³/ h, the ozone density is 3.48 mg/ L, the pH value is 7.6, the treating time is 30 minutes, the Phenol removing rate almost reaches 100%, the COD removing rate is 50%. And this kind of treating processing is simple , the management is convenient, and the catalyst also has no much loss, its activity also did not take place obvious changing. It will have a very special advantage in purify environment.This research can push forword the research and development of the O₃ / TiO₂-mounted activated carbon catalyst oxidizing technique which is a new technique worthy of further study.