TiO_2光催化降解煤化工废水中有机物的应用展望

Application Prospect of Degradation of Organic Matter in Coal Chemical Wastewater by TiO_2 Photocatalysis

煤化工企业早在2005年就受到我国相关部门的重视,废水和环境等因素导致其发展面临重重困难。我国煤化工企业排放的废水以高浓度煤气洗涤废水为主,其中含有很多酚、油、氨氮等有毒有害物质,它是一种很难降解的工业废水,运用常规方法难以保障煤化工废水处理后达到规定的排放标准。采用TiO_2光催化降解煤化工废水中的有机物,成为当前化工行业的选择,这对于降低工业污水对环境的污染具有重要意义。

As early as 2005, coal chemical enterprises have been paid attention to by relevant departments in China, and their development has faced difficulties due to factors such as wastewater and environment. The wastewater discharged from coal chemical enterprises in China is mainly composed of high-concentration gas washing wastewater, which contains many toxic and harmful substances such as phenol, oil and ammonia nitrogen. It is a kind of industrial wastewater that is difficult to degrade. It is difficult to ensure that the coal chemical wastewater is treated to meet the specified discharge standards by conventional methods. The use of TiO2 photocatalytic degradation of organic matter in coal chemical wastewater has become the choice of the current chemical industry, which is of great significance for reducing the environmental pollution of industrial wastewater.