| 新型聚乙烯填料生物滴滤床净化硫化氢气体运行特性 |
| 摘要点击 3378 全文点击 1646 投稿时间：2009-09-24 修订日期：2009-10-27 |
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| 中文关键词 新型填料 生物滴滤床 硫化氢气体 运行特性 生物法脱臭 |
| 英文关键词 innovative carrier biotrickling filter hydrogen sulphide operation characterization biological deodorization |
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| 中文摘要 |
| 研究高密度聚乙烯改良型拉西环填料按其不同规格分层填充后生物滴滤床去除硫化氢气体的运行特性.126 d的长期运行试验结果表明，该反应器具有压降低、负荷沿塔高分布均匀的显著优点.在去除率>90%时，气体停留时间最短为12 s，入口负荷最大为110 g/(m3·h)，反应器最大去除负荷为84 g/(m3·h).底层去除比率在37%～55%之间，负荷在2层填料间分布均匀.整个长期运行期间反应器压降一直低于280 Pa/m，反冲周期大于2个月，长期运行底层未发生生物量积累，稳定运行时压降的变化可以作为反应器反冲的监控指标.故障恢复试验表明，反应器在停止供应气相基质6 d后，去除率恢复到95%仅需1 d，喷淋液pH的剧烈变化对于反应器具有明显的不良影响. |
| 英文摘要 |
| Characteristics of double-layer biotrickling filter using high density polythene rasching rings carrier treating waste gas containing hydrogen sulphide was studied. Results showed that biotrickling filter had significant advantages of low pressure drop and even load distribution along the reactor height. When removal efficiency was greater than 90%, gas retention time was 12 s, maximum inlet load was 110 g/(m3·h), elimination capacity was 84 g/(m3·h). At steady state, about 37%-55% of hydrogen sulfide load was removed from the lower layer. During long-term operation, pressure drop kept to less than 280 Pa·m-1, the backwashing period was longer than two months, no biomass accumulation happened in the lower layer, and abnormal increase in pressure drop can be used as a indicator of backwashing. Reactor recovery and restart experimental results showed that removal efficiency recovered to 95% in 1day after 6 days without H2S, pH dramatic variation of spray liquid had significant adverse impact on biotrickling bed reactor. |
