As an alternative, I proposed a new method of treatment without secondary pollution. After much library research, I decided to use titanium dioxide as the semiconductive photochemical catalyst. Titanium dioxide, however, needs be excited by near ultraviolet rays, since its catalytic effects are quite low within the. From May to October 2000, I was responsible for the debugging of the workshop that conducts biochemical treatment of the epoxy propane wastewater for a chemical engineering plant in Nanjing City. In November, I participated in another biochemical treatment project of a chemical fiber factory. In this project, I encountered many technical problems. With detailed research and extensive consultation of technical literature, I finally discovered the optimum solution to them. In my thesis"A Study of the Applications of. Titanium Dioxide as a Semiconductive Photochemical Catalyst in the. Degradation of Wastewater I targeted the traditional separating process in treating wastewater, which often resulted in secondary pollution.
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Among all the issues, the wastewater problem might be the worst. Partly because of the lack of adequate public attention and appropriate government legislation and policy in the past decades, wastewater treatment in China becomes far behind developed countries.