摘要
研究了生物过滤塔处理实验室排放的模拟混合废气,考察了反应器对苯、甲苯、二甲苯、乙醇、丙酮、乙酸乙酯和甲烷等废气的去除效果。运行结果表明,在设备稳定运行期间,进气中总挥发性有机物(TVOCs)的浓度为124～380 mg/m3,而出气浓度在10～40 mg/m3,去除效率保持在85%以上。实验室废气中的多种污染物在生物过滤塔中去除机理不同,亲水性污染物的去除效率高于疏水性污染物。通过系统关停后重启,污染物的去除效果在第2天就能恢复,这为生物过滤塔处理实验室废气过程的停运检修或者系统闲置提供了可行性。
Laboratory simulated mixed exhaust gas was treated by a biofilter tower.The removal efficiency of benzene,toluene,xylene,ethanol,acetone,ethyl acetate and methane was investigated in system.The results showed that the inlet concentration of total volatile organic compounds（TVOCs） was 124～380 mg/m3,the effluent concentration was reduced to 10～40 mg/m3,and removal rate was more than 85%,when the system was operated continuously and smoothly.The removal mechanism for different pollutants in the waste gas was different.The removal efficiency of hydrophilic pollutants was higher than that of hydrophobic pollutants.Removal effect can be recovered in the second day,if the closing system reset.The results proved that the treatment system was feasible for system idle and overhaul.
出处
《环境工程学报》
CAS
CSCD
北大核心
2012年第10期3708-3712,共5页
Chinese Journal of Environmental Engineering
基金
宁波市自然科学基金(2012A610166)
杭州市环保局项目(2010019)
关键词
实验室废气
生物过滤塔
环境污染
生物法
laboratory waste gas
biofilter tower
environmental pollution
biological method
