摘要
生物法处理大气污染物时,经常会遇到条件波动或污染物间歇排放等非稳态工况.在不同非稳态条件下,考察了甲苯废气间歇排放对生物滴滤器净化性能的影响.实验方案分3种情况:无甲苯废气排放、无循环液供应或同时没有甲苯废气和循环液的供应.间歇排放时间从2～47 d不等.结果表明,不管何种形式的停运或故障,甲苯净化能力4 d以内基本不下降;停运时间超过5 d,则甲苯去除能力严重下降,仅为原来的1/3～1/2;停运时间在10 d以内,24 h内即可恢复,47 d的长期停运,3 d内也可恢复净化能力.
Biotrickling filters（BTFs） for air pollution control are expected to encounter fluctuating conditions or periods without pollutant supply. The effect of pollutant starvation on bench-scale BTFs filters treating toluene was investigated. The experimental protocol consisted of starving BTFs under various conditions： without airflow containing toluene;without liquid recycle; without airflow and liquid recycle. The duration of period varied from 2 to 47 days. The results show that no reactor lost its ability to degrade toluene if starvation was less than 4 days, regardless of any mode of starvation. Reactors starved more than 5 days lost their ability critically, but this decrease was not critical for future re-acclimation. The reacclimation of toluene-degrading BTFs after periods of nonuse （within 10 days） was short（24 h）to re-establish full performance,3 days was enough to re-establish full performance for longer starvation（ 47 days）.
出处
《环境污染治理技术与设备》
CSCD
北大核心
2005年第12期48-51,共4页
Techniques and Equipment for Environmental Pollution Control
基金
江苏省自然科学基金资助项目(BK2001060)
关键词
生物滴滤器
挥发性有机化合物
甲苯
非稳态
停运
恢复
violate organic compounds （VOCs）
toluene
unstable state
decommissioning
reacclimation
