生物过滤塔甲苯降解性能研究  

Biological Removal of VOCs Emissions

作　　者：李国文[1] 胡洪营[1] 郝吉明[1] 马广大[2] 

机构地区：[1]清华大学环境工程系,北京100084 [2]西安建筑科技大学,西安710054

出　　处：《环境科学》2001年第2期31-35,共5页Environmental Science

基　　金：清华大学研究基金

摘　　要：在空塔气速 0 7～ 3 5cm/h、停流时间 30s～ 80s的试验范围内 ,选取柱状活性炭为滤料 ,选择甲苯为VOCs代表 ,研究过滤塔甲苯生物降解性能 ,分析浓度、流量以及湿含量对降解能力的影响 ,建立VOC生物降解模型并予以验证 .运行试验表明 ,滤料微生物活性较强 ,对甲苯有较强的降解能力 ;菌落分析表明 ,在甲苯生物降解过程中 ,起主要作用的是真菌、杆菌和芽孢杆菌 ,其中芽孢杆菌为优势菌种 .The designed test conditions were following: vacancy velocity was from 0 7cm/s to 3 5cm/s,retention time was from 30s to 80s.Column activated carbon was selected as the filler of the reactor and toluene was taken as representative of VOCs.The biodegradation of toluene using biofilter reactor and the influence of concentration,flow and humidity on the toluene removal were investigated and the removal model was set up.The experimental results showed that the biofilter reactor had higher toluene removing ability.The observation of biotic community demonstrated that the microbes consisted of fungi,bacillus and spore bacillus.Of them spore bacillus was dominant.

关 键 词：甲苯 过滤塔 生物降解 降解性能 VOCS废气 空气污染控制 

分 类 号：X511.05[环境科学与工程—环境工程]