生物滴滤塔处理甲醛和三苯混合气体的实验研究

对生物滴滤塔处理甲醛和三苯混合气体的影响因素及性能进行了研究,在室温、pH值为6-7的条件下，当进气流量为600L／h，表面液体速度为3．14-3．93m／h时，生物滴滤塔对低浓度甲醛、苯、甲苯和二甲苯的混合气体有很好的去除效果，其相应的去除率分别在99％、73％、91％、88％以上．生物滴滤塔中的微生物对去除甲醛起到了重要作用．通过富集实验，经单菌对比验证，有4株菌降解效果显著．经16SrDNA测序和生理生化鉴定，可基本确定菌株J1和B4为Pseudomonas sp．，菌株JB2为Bacillus sp．，菌株E5为Arthrobacter sp．

Experiment of Removing Formaldehyde, Benzene, Toluene and Xylene Mixed Gas by Biotrickling Filter

The factors influencing the performance of biotrickling filter were studied in removing formaldehyde, benzene, toluene and xylene mixed gas. At room temperature and in the pH range from 6 to 7, when the inlet gas flow was 600 L/h and the apparent liquid velocity was 3.14--3.93 m/h, the biotrickling filter had a good removal effect on formaldehyde, benzene, toluene and xylene mixed gas with the low concentration. The removal rates were over 99%, 73%, 91% and 88%, respectively. The microorganism in the biotrickling filter played an important role in removing formaldehyde. Enrichment tests and the single bacterium contrast show that four of strains have a notable degradation effect. By 16SrDNA sequencing, and physiological and biochemical characteristic identification, it can be confirmed that strain J1 and B4 are Pseudomonas sp., strain JB2 is Bacillus sp., strain E5 is Arthrobacter sp.