中文摘要：

研究了生物滴滤塔处理低质量浓度苯、甲苯混合废气的工艺性能及动力学模型拟合效果。在进气量600L／h，循环液喷淋量20L／h的操作条件下，生物滴滤塔对低质量浓度苯、甲苯混合气体有很好的去除效果，苯的去除率在65％左右，甲苯的去除率在93％左右。从生物反应器中分离筛选出1株能够降解苯、甲苯污染物的高效菌L4，通过Shedock脂肪酸鉴定系统分析，匹配值SI为0．884，基本确定该菌株属于Bacillus.sp。采用吸附-生物膜理论进行动力学分析，与实验数据相比有良好的相关性，相关系数苯R^2=0．9995、甲苯R^2=0．9996。

英文摘要：

The biological elimination capacity of low mass concentration benzene and toluene waste-gas by biotrickling filter and the kinetic model were researched. The results show that under the operation condition of the influent gas flowrate 600 L/h and the spraying quantity of circulation fluid 20 L/h, the biotrickling filter can get a good removal effect to mixed gas consisting of benzene and toluene： the removal efficiency of benzene is about 65%, toluene about 93%. A kind of high-efficiency bacteria L4 was screened out from the biotrickling filter. With the aid of Sherlock fatty acid profiling by gas chromatography, SI was determined as 0.884, bacteria L4 belongs to Bacillus. sp. The bioprocess has a higher relativity with the kinetic model of adsorption-biomembrane. The correlative coefficient of benzene R^2 = 0. 999 5, the correlative coefficient of toluene R^2 = 0.999 6.