【摘要】 采用活性炭吸附方法控制饮用水中的三卤甲烷（THMs）。对筛选的活性炭进行动态和静态吸附实验。在ACL₁,ACL₂,ACY,ACM 4种活性炭中，椰壳活性炭ACL₁对THMs的平衡吸附量最高；吸附行为更符合Freundlich经验模型。静态吸附实验结果表明，前1 h ACL₁对THMs的吸附效率较高，4 h内达到吸附平衡，当温度为27～36℃时，温度变化对活性炭吸附THMs的影响较小；当THMs的初始浓度为200μg·L^-1时，ACL₁对THMs的去除率大于90%;ACL₁对THMs的吸附效率依次为CHBr₃>CHClBr₂>CHCl₂Br>CHCl₃。动态吸附实验结果表明，当进水的THMs浓度为200μg·L^-1时，出水THMs达到《生活饮用水卫生标准》（GB5749—2006）所需的最大吸附时长分别为：CHCl₃8.1 h,CHCl₂Br 15.3 h,CHClBr₂15.6 h,CHBr₃16.5 h。更多还原

【Abstract】 To control the amount of trihalomethane （THMs） in drinking water,this study employs activated carbon as adsorbent to adsorb THMs.Experimental results show that coconut shell activated carbon ACL₁ has higher equilibrium adsorption capacity for THMs.The static adsorption test showed that activated carbon ACL₁ presented higher adsorption efficiency for THMs within 1 hour,and reached adsorption equilibrium within 4 h.It was found that,the temperature had little effect on the adsorption of THMs by activated carbon within the range of 27- 36℃;When the initial concentration of THMs was twice the limit value of national standard,the removal rate of THMs was higher than 90%.The best adsorption effect of coconut shell activated carbon ACL₁ was on CHCl₃,followed by CHCl₂Br,CHClBr₂ and CHBr₃.The results of dynamic adsorption test showed that when the influent concentration of THMs were 200μg·L^-1,the removal efficiency of THMs by the advanced treatment process meet the requirements of sanitary standard for drinking water （GB5749-2006）.The adsorption effect of CHCl₃,CHCl₂Br,CHClBr₂ and CHBr₃ was consistent with the static adsorption test.The maximum adsorption time was 8.1,15.3,15.6 and 16.5 h,respectively.更多还原