生物滴滤器净化甲苯废气研究  

Study on Purification of Gaseous Toluene with Biotrickling Filter

作　　者：季学李[1] 羌宁[1] 何坚[1] 

机构地区：[1]同济大学环境科学与工程学院

出　　处：《上海环境科学》2000年第8期369-372,共4页Shanghai Environmental Sciences

基　　金：国家自然科学基金 编号 59678022

摘　　要：..__为探索气态挥发性有机污染物(VOCS)高负荷生物滴滤器(BTF)处理的可能性,采用筛选出的纤维附着活性炭(ACOF)为载体材料,用经以甲苯为唯一碳源驯化而得的微生物菌种,迸行了甲苯废气的净化实验。结果表明:采用ACOF的BTF最大消除能力值可达 2809/m’小。在甲苯负荷小于 2809/m‘h,停留时间 15.7s的条件下,表观气速 230m/h时可保持 90％以仁的净化效率。闲置恢复实验表明:数小时的停运闲置对设备性能基本无影响;Zd停运闲置后,恢复开机时性能有所下降,但在1-3h内便能恢复;20d以上的闲置对设备的性能影响较大,需2-3d才能基本恢复。总体结果表明,采用ACOF的BTF具有净化效率高、缓冲能力较好等特。17。Based on the media evaluation result, a biotrickling filter packed with ACOF (Activated Carbon on Fiber) was used to remove toluene from a waste gas stream. The experimental results showed that the maximum elimination capacity (EC) of the biotrickling filter for toluene could reach 280g/m3.h. The performance of the BTF was good for lower concentration hydrophobic toluene stream at higher superficial velocity. When superficial velocity was 230m/h and the empty bed retention time (EBRT) was 15.7s, the toluene gas stream of 280g/m3.h loading could achieve 90% removal efficiency. The non-use experimental results showed that short time (8 ~ 12h) non-use had no or very little effect on the BTF removal efficiency. 2 days scale non-use caused some adversary effect on the BTF performance, and needed 1 - 3h to regain the initial performance. Long time non-use (more than 20 days) caused obvious damage of the performance. In this situation, the biotrickling filter needed 3 days to get recovery. General speaking, the biotrickling filter packed with ACOF has the advantage of high removal efficiency and good buffer and maintain capacity.

关 键 词：气体生物滴滤器 甲苯 VOCS 净化 废气处理 

分 类 号：X701[环境科学与工程—环境工程] X783.01