新型聚乙烯填料生物滴滤床净化硫化氢气体运行特性  

Performance of an Innovative Polyethylene Carrier Biotrickling Filter Treating Hydrogen Sulphide Gas

作　　者：伍永钢[1,2] 任洪强[1] 丁丽丽[1] 

机构地区：[1]南京大学环境学院,污染控制与资源化研究国家重点实验室,南京210093 [2]安徽师范大学环境科学与工程学院,芜湖241000

出　　处：《环境科学》2010年第7期1451-1456,共6页Environmental Science

基　　金：江苏省重大支撑计划项目(BS2008006);安徽高校省级自然科学研究计划项目(KJ2008B191);安徽师范大学青年科学基金项目(2007xqn83)

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.126d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12s,入口负荷最大为110g/(m3·h),反应器最大去除负荷为84g/(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280Pa/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6d后,去除率恢复到95%仅需1d,喷淋液pH的剧烈变化对于反应器具有明显的不良影响.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 H2 S,pH dramatic variation of spray liquid had significant adverse impact on biotrickling bed reactor.

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 

分 类 号：X512[环境科学与工程—环境工程]