摘要
..__为探索气态挥发性有机污染物(VOCS)高负荷生物滴滤器(BTF)处理的可能性,采用筛选出的纤维附着活性炭(ACOF)为载体材料,用经以甲苯为唯一碳源驯化而得的微生物菌种,迸行了甲苯废气的净化实验。结果表明:采用ACOF的BTF最大消除能力值可达 2809/m’小。在甲苯负荷小于 2809/m‘h,停留时间 15.7s的条件下,表观气速 230m/h时可保持 90％以仁的净化效率。闲置恢复实验表明:数小时的停运闲置对设备性能基本无影响;Zd停运闲置后,恢复开机时性能有所下降,但在1-3h内便能恢复;20d以上的闲置对设备的性能影响较大,需2-3d才能基本恢复。总体结果表明,采用ACOF的BTF具有净化效率高、缓冲能力较好等特。17。
Based on the media evaluation result, a biotrickling filter packed with ACOF (Activated Carbon on Fiber) was used to remove toluene from a waste gas stream. The experimental results showed that the maximum elimination capacity (EC) of the biotrickling filter for toluene could reach 280g/m3.h. The performance of the BTF was good for lower concentration hydrophobic toluene stream at higher superficial velocity. When superficial velocity was 230m/h and the empty bed retention time (EBRT) was 15.7s, the toluene gas stream of 280g/m3.h loading could achieve 90% removal efficiency. The non-use experimental results showed that short time (8 ~ 12h) non-use had no or very little effect on the BTF removal efficiency. 2 days scale non-use caused some adversary effect on the BTF performance, and needed 1 - 3h to regain the initial performance. Long time non-use (more than 20 days) caused obvious damage of the performance. In this situation, the biotrickling filter needed 3 days to get recovery. General speaking, the biotrickling filter packed with ACOF has the advantage of high removal efficiency and good buffer and maintain capacity.
出处
《上海环境科学》
CAS
CSSCI
CSCD
2000年第8期369-372,共4页
Shanghai Environmental Sciences
基金
国家自然科学基金 编号 59678022
关键词
气体生物滴滤器
甲苯
VOCS
净化
废气处理
Gaseous biotrickling filter Packing Media Remove ability Toluene VOCs ACOF
