【摘要】 好氧颗粒污泥膜生物反应器运行了75 d,其COD、氨氮和总氮去除率分别为91%~95%、89.57%~100%和48.25%~90.84%;运行过程中颗粒污泥出现了一定程度的解体,污泥沉降性能出现了恶化,污泥比阻由起始的1.085×1013m/kg上升到反应末期的2.712×1013m/kg;胞外聚合物维持在44.71~72.23 mg/g之间.对膜组件污染特性进行研究,发现膜表面滤饼层阻力和膜孔堵塞阻力分别为5.32×1011m-1和2.34×1011m-1,占到总阻力的67.42%和29.66%.通过对膜污染物质进行红外光谱分析,发现膜污染的主要物质为蛋白质和糖类物质.更多还原

【Abstract】 The aerobic granular sludge membrane bioreactor worked for 75 days.In this operation,the removal efficiencies for COD,NH⁺₄-N and TN were 91%-95%,89.57%-100% and 48.25%-90.84%,respectively.The granular sludge appeared disintegration to some extent and the sludge settlement performances deteriorated. Sludge specific resistance from initial resistance of 1.085×10¹3m/kg rose to 2.712×10¹3 m/kg at the end;extracellular polymeric substances maintained between 44.71 and 72.23 mg/g.Then,pollution characteristics of the membrane module were studied.It was found that membrane surface cake layer resistance and membrane pore plugging resistance were 5.32×10¹1m^-1 and 2.34×10¹1m^-1,accounted for the total resistance of 67.42% and 29.66%,respectively.Through the analysis of infrared spectrum for membrane fouling matters found that the main fouling matters were proteins and carbohydrate materials for membrane.更多还原