臭氧—生物活性炭与单独活性炭工艺处理效果比较  

Comparison of Performance between O_3-BAC and GAC Processes

作　　者：孔令宇[1] 张晓健[1] 王占生[1] 

机构地区：[1]清华大学环境科学与工程系,北京100084

出　　处：《中国给水排水》2006年第11期49-51,共3页China Water & Wastewater

摘　　要：为有效去除水中有机物,明确是否应在活性炭前投加臭氧,比较了臭氧-生物活性炭（O3-BAC）和单独活性炭（GAC）过滤对CODMn、UV254和TOC的去除效果以及两套系统对提高水质生物稳定性的作用.研究发现,O3-BAC对CODMn、UV254和TOC的平均去除率比GAC分别高10.3%、11.1%、7.1%,对AOC的去除率＞80%,出水AOC浓度为25.9～46.4μg乙酸碳/L,属生物稳定性水质;单独GAC柱对AOC的去除率在40%左右,出水AOC浓度为85.8～117.6μg乙酸碳/L,有时不能满足水质生物稳定性的要求.可见在活性炭前投加臭氧,可以强化活性炭对有机物的去除作用,延长活性炭的使用周期,增强活性炭滤池的生物降解能力.To remove organics effectively and to confirm whether it is necessary to add O3 before granular activated carbon （GAC） filtration, an experiment was carried out. The removal effects of O3 - BAC and GAC on CODMn, UV254, TOC and their abilities of biostable improvement were compared. The result indicates that the average removal rates of O3 - BAC for CODMn, UV254, TOC are 10. 3% , 11.1% , 7.1% higher than GAC, respectively. The AOC removal rate of 03 -BAC is above 80% and the effluent AOC is 25.9 - 46.4 μg acetate-C/L. The effluent is biostable. The AOC removal rate of GAC is about 40% and the effluent AOC is 85.8 - 117.6 μg acetate-C/L. Sometimes the effluent isn＇ t biostable. As a conclusion, ozonation can improve the removal rate of organic pollutants, extend the service time of AC and enhance the biodegradation ability of AC filter.

关 键 词：臭氧-生物活性炭 颗粒活性炭 有机污染物 生物稳定性 

分 类 号：TU991.2[建筑科学—市政工程]