摘要
通过自来水配水的动态试验,比较了陶粒、活性炭、生物陶粒和生物活性炭四种填料对卤乙酸的去除情况。结果表明,生物降解对卤乙酸有很好的去除作用。生物降解作用对卤乙酸的去除率随着停留时间增加而升高,在停留时间为15,30和60min时,生物陶粒柱对二氯乙酸的去除率接近100%,对三氯乙酸的去除率分别为60%,94%和100%。活性炭对卤乙酸的去除方式随运行时间而变化,开始主要是吸附作用,饱和后主要是生物降解作用。
Removal characteristics of haloacetic acids (HAAs) by adsorption and/or biofiltration using column test with four medias including ceramite, activated carbon, bioceramic and BAC were conducted. The results indicate that biodegradation can remove HAAs effectively. The removal efficiency is higher as the contact time becomes longer. When the contact time is set at 15, 30 and 60 min, the removal efficiency of DCAA (dichloroacetic acid) by bioceramic is nearly 100% while TCAA (trichlo-roacetic acid) 60%, 94% and 100% correspondingly. HAAs removal by activated carbon at the beginning of the experiment is from carbon adsorption, whereas biodegradation is the HAAs removal mechanism later in the experiment.
出处
《供水技术》
2007年第5期25-28,共4页
Water Technology
