作　　者： ; ;

机构地区： 深圳职业技术学院建筑与环境工程学院

出　　处： 《环境科学与技术》 2017年第S2期96-101,共6页

摘　　要： 采用两级生物滴滤塔处理甲硫醚废气,研究进气量对甲硫醚去除效果的影响,并考察塔内压降的变化情况。结果表明,当甲硫醚的进气量由15 L/min增加到35 L/min,一级生物滴滤塔对甲硫醚的去除率先由27%升高至50%后下降到35%,而二级生物滴滤塔对甲硫醚的去除率则由99%下降至76%。一级和二级生物滴滤塔的压降均随着进气量的增加而不断升高,其中一级从80 Pa提高到160 Pa、二级从100 Pa提高到180 Pa。利用高通量测序技术分析塔内的群落结构,发现当进气量为15 L/min时,一级生物滴滤塔的优势菌种门类是Proteobacteria(63%)、Planctomycetes(12%)、Bacteroidetes(11%)。进气量加大到35 L/min,一级生物滴滤塔的优势菌种门类变成2种Proteobacteria(77%)、Planctomycetes(8%)。但是二级生物滴滤塔的优势菌种门类在进气量为15 L/min和35 L/min时变化较小,分别对应为Proteobacteria(69%、74%)、Planctomycetes(10%、8%)。 The effect of gas flow on biodegradation of methyl sulfide by two-stage biotrickling filters was studied. The re-sults showed that when the gas flow of methyl sulfide was increased from 15 L/min to 35 L/min, the removal rate of methyl sulfide firstly increased from 27% to 50% and then decreased to 35% in first-stage biotrickling filter. The removal rate of methyl sulfide from the second biotrickling filter decreased from 99% to 76%. The pressure drop of the first biotrickling filters increased from 80 Pa to 160 Pa, the second biotrickling filters increased from 100 Pa to 180 Pa with the gas flow increasing,respectively. Using high-throughput sequencing to research the community structure of biotrickling filters, it was found that when the gas flow was 15 L/min, the dominant species of the first biotrickling filter were Proteobacteria(63 %), Planctomycetes(12%) and Bacteroidetes(11%). But when the gas flow increased to 35 L/min, the predominant species of the first biotrickling filter was Proteobacteria(77%) and Planctomycetes(8%). However, there were a little change in the dominant species of the second biotrickling filter in the gas flow of 15 L/min and 35 L/min, corresponding to Proteobacteria(69 %, 74%)and Planctomycetes(10%, 8%).

关 键 词： 进气量 生物滴滤塔 群落结构 甲硫醚

领　　域： []