【作者】 吕阳； 胡光耀； 姜安玺；

【Author】 LV Yang;HU Guangyao;JIANG An-xi;School of Civil Engineering, Dalian University of Technology;School of Municipal and Environmental Engineering, Harbin Institute of Technology;

【机构】 大连理工大学土木工程学院； 哈尔滨工业大学市政环境工程学院；

【摘要】 本文对生物滴滤技术去除挥发性有机物的影响因素及性能进行了研究。结果表明当进气流量为600L/h,表面液体速度为3.14～3.93m/h,生物滴滤技术对低浓度的甲醛、苯、甲苯及二甲苯的混合气体有较高的去除效果。甲醛、苯、甲苯、二甲苯的去除率分别达到99%、73%、91%和88%以上。研究表明,生物反应器对甲醛的净化效果不仅是循环液的物理吸收,反应器中的微生物也起到了重要的作用。通过富集实验,经单菌对比验证有4株菌株降解效果显著,其中菌株J1对甲醛的降解率为84%,菌株B4对苯的降解率为88.8%,菌株JB2对甲苯降解率为92.2%,菌株E5对二甲苯降解率为84.2%。经16SrDNA测序及同源性比较,得到菌株J1为Pseudomonas.sp,菌株B4为Pseudomonas.sp,菌株JB2为Bacillus.sp,菌株E5为Arthrobacter.sp。更多还原

【Abstract】 In this paper, the influencing factors and performance of biotrickling filter for removal of volatile organic compounds were studied. The results showed that when the inlet flow rate was 600 L/h and the surface liquid velocity was 3.14～3.93 m/h, the biotrickling filter technology had a better removal effect on the low concentration mixed gas of formaldehyde, benzene, toluene and xylene. The removal rates of formaldehyde, benzene, toluene and xylene were 99%, 73%, 91% and 88% above, respectively. The results showed that the purification effect of formaldehyde given by bioreactor was not only the physical absorption of circulating liquid, but also the microorganism in the reactor. Through enrichment experiments, 4 strains have significant degradation verified by single bacteria, and the degradation rate of formaldehyde by the strain J1 rate of was 84%, the degradation rate of benzene by the strain B4 was 88.8%,the degradation rate of toluene by the strain JB2 was 92.2%,the degradation rate of p-xylene by the strain E5 was 84.2%. 16 SrDNA sequencing and homology comparison showed that strain J1 was Pseudomonas.sp, strain B4 was Pseudomonas.sp, strain JB2 was Bacillus.sp and strain E5 was Arthrobacter.sp.更多还原