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采用吹洗曝气和跌水曝气对消毒后饮水中的氯仿的去除效果较好。其消除率与时间、气体流量、水温成正比,水量越大,水中氯仿浓度越高,处理后残余氯仿越高。两种方法对三卤甲烷(THMs)各组分的消除效果表明,其消除效果随着各组分沸点的升高而降低。两种方法对军用水壶中消毒后产生的THMs都有较好的消除效果,吹洗5分钟,跌水10分钟都可以将THMs降到100μg/L以下。采用人工吹洗曝气3分钟,可使消毒水样中的THMs降到100μg/L以下。
The use of purge aeration and drop aeration has better removal of chloroform in drinking water after disinfection. The elimination rate is proportional to time, gas flow, and water temperature. The greater the amount of water, the higher the concentration of chloroform in the water and the higher the residual chloroform after treatment. The elimination effect of trihalomethanes (THMs) by the two methods shows that the elimination effect decreases with the boiling point of each component. Both methods have a good elimination effect on the THMs produced after sterilization in a military water bottle. Purging for 5 minutes and dropping water for 10 minutes can reduce the THMs to less than 100 μg/L. Using artificial aeration for 3 minutes, the THMs in the disinfectant sample can be reduced to less than 100 μg/L.