【摘要】 通过实验证实了利用二氧化钛作为催化剂光降解地下水中六六六的可行性.讨论了光照时间、光照强度、地下水pH值、温度等因素对降解效果的影响.由正交实验确定出最佳降解条件:8W紫外光灯管照射、光照时间为30min、地下水pH=5、温度为14℃,降解率为47.96%,考察了Fe3+,Mn2+对光降解效果的影响.更多还原

【Abstract】 The feasibility of photocatalytic degradation of hexachlorocyclohexane(BHC) in groundwater with titanium dioxide was proved by a series of experimental investigations.It was shown that the degradation rate of BHC was affected by irradiation time and intensity,groundwater pH and temperature.By means of orthogonal experiment,we have concluded that the optimum degrading conditions are that the radiation time is 30 min,8 W ultraviolet radiation,groundwater pH5,temperature is 14 ℃.The best rate of degradation is 47.96%,and the effects of Fe3+ and Mn2+ on the photocatalytic degradation were investigated through the experiments under the best degrading conditions.更多还原