投加粉煤灰对一体式膜生物反应器活性污泥性能的影响  

Influence of coal fly ash on activated sludge performance in SMBR

作　　者：伍昌年[1] 郑力菲[1] 汤利华[1] 汪煦阳[1] 李明德[1] 杨艳灵[1] 胡晓波[1] 

机构地区：[1]安徽建筑工业学院环境与能源工程学院,安徽合肥230601

出　　处：《工业水处理》2012年第11期32-35,共4页Industrial Water Treatment

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07316-002);安徽省教育厅资助项目(KJ2011B048);安徽建筑工业学院大学生科技创新项目(C11005)

摘　　要：通过实验考察了投加粉煤灰对一体式膜生物反应器中活性污泥性能及膜过滤阻力的影响。实验中将不同量的粉煤灰投加到活性污泥中,反应30 min后分别考察了粉煤灰投加量对污泥体积指数、污泥脱氢酶活性等的影响,并确定了粉煤灰最佳投加量。在膜生物反应器连续运行条件下,分别测定了混合液上清液中有机污染物浓度及膜过滤阻力。结果表明,投加粉煤灰可有效降低SVI及混合液中的EPS,活性污泥活性显著增加,膜过滤阻力增加缓慢,有效地降低了膜污染发展速率。The influence of coal fly ash on activated sludge performance and membrane filtration resistance in the submerged membrane bioreactor has been investigated. Coal fly ash with different dosages is added to activated sludge. After reacted for 30 min, the influences of coal fly ash dosages on sludge volume index, dehydrogenase activ- ity, etc. are investigated, and the optimal coal fly ash dosage is confirmed. When MBR works continuously, the con- centrations of organic pollutants in supernatant fluid and membrane filtration resistance are determined. The results indicates that adding coal fly ash could effectively slow down sludge volume index （SVI） and extracellular polymeric substances （EPS） in mixed liquor, and obviously promote the activated sludge activity,which contributes to mem- brane filtration resistance increasing slowly and membrane fouling rate decreasing effectively.

关 键 词：一体式膜生物反应器 粉煤灰 污泥体积指数 脱氢酶活性 

分 类 号：X703[环境科学与工程—环境工程]