生物过滤床处理甲苯和乙酸乙酯混合废气  

SIMULTANEOUS BIOFILTRATION OF ETHYL ACETATE AND TOLUENE IN EMISSION GAS

作　　者：刘永慧[1] 孙玉梅[1] 全燮[1] 陈景文[1] 薛大明[1] 张晓飞[1] 

机构地区：[1]大连理工大学环境科学与工程学院,辽宁大连116012

出　　处：《化工学报》2002年第8期853-856,共4页CIESC Journal

基　　金：大连市科委重点基金项目 (No 199995 );辽宁省科技基金项目 (No 9910 60 0 2 0 2 )

摘　　要：Two biofilters,RA which had been exposed to varying concentration of ethyl acet ate for 20 days and RB which had been exposed to varying concentration of toluen e for 20 days, were used to remove mixed gas of ethyl acetate and toluene. The t wo biofilters used a mixture of compost and lava, with the initial medium moistu re content of 50%. The experimental results demonstrated several characteristics of the two biofilters:The maximum elimination capacities were about 400?g·m -3 ·h -1 for ethyl acetate and 50 g·m -3 ·h -1 for toluene;U nder the condition that the empty bed residence time was 1.0 minute, for e thyl a cetate concentration in the inlet air ranging from 2000 mg·m -3 to 4500?m g·m -3 and toluene concentration ranging from 200?mg·m -3 to 400?m g·m -3 ,the removal efficiency for binary VOCs of both biofilter RA was ab ove 90%;Biofilter RA was better than biofilter RB in elimination capacity, stabi lity and adaptability.Two biofilters,RA which had been exposed to varying concentration of ethyl acet ate for 20 days and RB which had been exposed to varying concentration of toluen e for 20 days, were used to remove mixed gas of ethyl acetate and toluene. The t wo biofilters used a mixture of compost and lava, with the initial medium moistu re content of 50%. The experimental results demonstrated several characteristics of the two biofilters:The maximum elimination capacities were about 400?g·m -3 ·h -1 for ethyl acetate and 50 g·m -3 ·h -1 for toluene;U nder the condition that the empty bed residence time was 1.0 minute, for e thyl a cetate concentration in the inlet air ranging from 2000 mg·m -3 to 4500?m g·m -3 and toluene concentration ranging from 200?mg·m -3 to 400?m g·m -3 ,the removal efficiency for binary VOCs of both biofilter RA was ab ove 90%;Biofilter RA was better than biofilter RB in elimination capacity, stabi lity and adaptability.

关 键 词：生物过滤床 甲苯 乙酸乙酯 混合废气 挥发性有机物 大气污染 废气处理 

分 类 号：X701[环境科学与工程—环境工程]