“表观”即时成膜型光催化反应器去除水中有机物研究

Research on Organic Pollutants Removal Using "Apparent" Quick-prepared Film Photocatalytic Reactor

采用"表观"即时成膜型光催化反应器处理自来水和苯酚水溶液,在获得良好光催化效果的同时,成功地解决了反应完成后光催化剂与水的分离问题。当光催化剂(TiO2)投加量为1 g/L时,反应3 h后对自来水中CODMn、TOC和UV254的去除率分别为17.3%、29.9%和67.4%。在相同的条件下降解初始浓度为4.34 mg/L的苯酚水溶液,反应3 h后对苯酚和TOC的去除率分别为93.8%和47.3%。反应时间、光催化剂种类、光催化剂投加量、辐照度、外加氧化剂及有机物初始浓度对光催化效果均有不同程度的影响。

While disposing the tap water and the phenol solution with ＂apparent＂ quick-prepared film photocatalytic reactor, good photocatalytic effect was acquired, meanwhile, photocatalyst was successfully separated after reaction. When adding 1 g/L TiO2, the removal rates of CODMn, TOC and UV254 in the tap water are 17.3%, 29.9% and 67.4% respectively after reaction of 3 h. Under the same reaction conditions, the removal rates of phenol and TOC are 93.8% and 47.3% when degrading the phenol solution in which the initial concentration of phenol solution is 4.34 mg/L. Reaction time, types of photocatalyst, dosage of photocatalyst, light intensity, oxidation additive and initial concentration of organic compounds have influence on photocatalytic effect in different degree.