生物活性炭内吸附与生物降解协同去除有机污染物  

Removal of Organic Pollutants by Adsorption Cooperated with Biodegradation in BAC

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：《环境科学》2007年第4期777-780,共4页Environmental Science

摘　　要：本研究建立了一个确定BAC内2种机理去除有机物分配比例的试验方法．该方法以BAC进出水中溶解性有机碳（DOC）与可生物降解有机碳（BDOC）浓度变化作为评价参数，并利用此方法确定了臭氧投加量对2种去除机理的影响．臭氧化可以使BDOC浓度增加，臭氧投量为2～8mg／L时，BDOC增加0．12—0．54mg／L；BAC过滤使出水BDOC浓度降低为0．23-0．31mg／L．随着臭氧投量增加（2—8mg／L），在BAC内生物降解作用去除有机物比例从46％增加到89％．The determination measure for distribution of NOM removal by two mechanisms in BAC was established. In this method, the change in DOC and BDOC of inflow and effluent was used to evaluate the distribution and to determinate the effect of the different ozone doses on the adsorption and biodegradation in BAC. The ozonation increased the concentration of BDOC in 0.12 - 0.54 mg/L with ozone dose of 2-8 mg/L and BAC filtration decreased concentration of BDOC to 0.23 - 0.31 mg/L. Moreover the biodegradation distribution to remove the organic pollutants increased from 46% to 89% with ozone dose of 2 - 8 mg/L.

关 键 词：臭氧-生物活性炭 臭氧投加量 吸附作用 生物降解 溶解性有机碳 可生物降解有机碳 

分 类 号：X52[环境科学与工程—环境工程] TU991.2[建筑科学—市政工程]