Influence of coal fly ash on activated sludge performance in SMBR

doi:10.11894/1005-829x.2012.32(11).32

INDUSTRIAL WATER TREATMENT ›› 2012, Vol. 32 ›› Issue (11): 32-35. doi: 10.11894/1005-829x.2012.32(11).32

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Influence of coal fly ash on activated sludge performance in SMBR

Wu Changnian, Zheng Lifei, Tang Lihua, Wang Xuyang, Li Mingde, Yang Yanling, Hu Xiaobo

School of Environment and Energy Engineering, Anhui University of Architecture, Hefei 230601, China

Received:2012-07-23 Online:2012-11-20 Published:2012-11-29

投加粉煤灰对一体式膜生物反应器活性污泥性能的影响

伍昌年, 郑力菲, 汤利华, 汪煦阳, 李明德, 杨艳灵, 胡晓波

安徽建筑工业学院环境与能源工程学院, 安徽合肥 230601

作者简介:伍昌年(1973- ), 博士, 讲师电话:13965122789, E-mail:wucn@aiai.edu.cn
基金资助:
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)

Abstract

Abstract:

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 activity，etc. are investigated，and the optimal coal fly ash dosage is confirmed. When MBR works continuously，the concentrations 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 membrane filtration resistance increasing slowly and membrane fouling rate decreasing effectively.

Key words: submerged membrane bioreactor, coal fly ash, sludge volume index, dehydrogenase activity

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。

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

CLC Number:

X703

Wu Changnian, Zheng Lifei, Tang Lihua, Wang Xuyang, Li Mingde, Yang Yanling, Hu Xiaobo. Influence of coal fly ash on activated sludge performance in SMBR[J]. INDUSTRIAL WATER TREATMENT, 2012, 32(11): 32-35.

伍昌年, 郑力菲, 汤利华, 汪煦阳, 李明德, 杨艳灵, 胡晓波. 投加粉煤灰对一体式膜生物反应器活性污泥性能的影响[J]. 工业水处理, 2012, 32(11): 32-35.

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投加粉煤灰对一体式膜生物反应器活性污泥性能的影响

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Influence of coal fly ash on activated sludge performance in SMBR

投加粉煤灰对一体式膜生物反应器活性污泥性能的影响

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