Performance of biotrickling filters packed with structured or cubic polyurethane sponges for VOC removal

查看全文 作　　者：Chunping [1,2]Yang;Guanlong [1,3]Yu;Guangming [1,3]Zeng;Haining [1]Yang;Fayuan [1,3]Chen;Congying [1,3]Jin

机构地区：[1]College of Environmental Science and Engineering, Hunan University, Hunan 410082, China.;[2]College of Environmental Science and Engneering, Zhejiang Gongshang University, Hangzhou 310012, China;[3]Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Hunan 410082, China

出　　处：《Journal of Environmental Sciences》索引2011年第23卷第8期,共9页

基　　金：supported by the National Natural Science Foundation of China (No. 50778066);the National Science and Technology Support Program of China (No. 2006BAJ04A13);the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20090161110010) 摘　　要：Two identical bench-scale biotrickling filters (BTFs),BTF 1 and BTF 2,were evaluated for toluene removal at various gas empty bed contact times (EBCTs) and organic loadings.BTF 1 and BTF 2 were packed with structured and cubic synthetic polyurethane sponges,respectively.At a constant toluene loading of 16 g/(m 3 ·hr),toluene removal efficiencies decreased from 98.8% to 64.3% for BTF 1 and from 98.4% to 74.1% for BTF 2 as gas EBCT decreased from 30 to 5 sec.When the toluene loading increased from 35 to 140 g/(m 3 ·hr) at a gas EBCT of 30 sec,the removal efficiencies decreased from 99.1% to 77.4% for BTF 1 and from 99.0% to 81.5% for BTF 2.The pressure drop for both BTFs increased with increased air flow rate,and did not significantly vary while the toluene loading was increased under similar operation conditions.BTF 1 and BTF 2 could start up successfully within 19 and 27 days,respectively,when packed with fresh sponge media,and the performances could be restored in 3-7 days after biomass was removed and wasted from the media.BTF 2 displayed higher removal efficiency even under shorter EBCT or higher loading rate than BTF1 when other operation conditions were similar,while it showed lower pressure drop than BTF 1 during the whole period of operation.These results demonstrated that both BTFs could treat waste gas containing toluene effectively. 关键词：聚氨酯海绵生物质能过滤器结构化包装立方 VOC 有机负荷

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Performance of biotrickling filters packed with structured or cubic polyurethane sponges for VOC removal

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