环境工程学报2017，Vol.11Issue(8)：4476-4480,5.DOI:10.12030/j.cjee.201603171
污泥性质对动态膜形成与污染的影响
Effect of sludge properties on membrane formation and fouling in a dynamic membrane bioreactor
摘要
Abstract
The effect on dynamic membrane (DM) formation and membrane fouling of normal sludge and bulking sludge was investigated from the viewpoints of extracellular polymeric substances (EPS), relative hydrophobicity (RH), and the characteristics of floc shapes.The results showed that the DM formation in normal sludge was faster than it was in the bulking sludge due to the larger particle size and higher RH of the normal sludge,and the formation times of the DM in normal sludge and bulking sludge were 25 min and 50 min, respectively.The cake resistance significantly contributed to the filtration resistance, which accounted for 83.91％ and 94.87％ of the total resistance in normal sludge and bulking sludge, respectively.The large number of filamentous bacteria in the bulking sludge resulted in severe cake fouling.Moreover, the comparatively more open and irregular morphology and higher EPS concentration, particularly the carbohydrate concentration, in bulking sludge lead to a more severe fouling propensity and higher fouling rate than normal sludge.关键词
污泥性质/污泥形态/动态膜形成/膜污染Key words
sludge properties/sludge morphology/formation of dynamic membrane/membrane fouling分类
资源环境引用本文复制引用
吴亚南,王晓昌,于真真,胡以松..污泥性质对动态膜形成与污染的影响[J].环境工程学报,2017,11(8):4476-4480,5.基金项目
国家水体污染控制与治理科技重大专项(2013ZX07310-001) （2013ZX07310-001）
国家自然科学基金资助项目(51508450) （51508450）
中国博士后科学基金资助项目(2015M582760XB) （2015M582760XB）
