【摘要】 将吸附能力强的黏土晶体矿物凹凸棒土应用于膜生物反应器（MBR）中,对比研究了常规MBR与凹凸棒土-MBR组合工艺处理微污染水源水的效能,结果表明,二者均能有效去除CODMn（化学需氧量）、NH₄⁺-N、UV₂₅₄、TOC（总有机碳）和浊度.系统长期运行过程中,凹凸棒土-MBR组合工艺的膜污染程度明显低于传统MBR系统.凹凸棒土-MBR的污泥混合液粒径要小于MBR工艺,其Zeta电位比MBR低11%³4%.傅里叶变换红外光谱（FTIR）测试表明,凹凸棒土的投加使MBR污泥混合液及其膜表面滤饼层中的有机物的结构和组成发生了一定的变化,有机物的种类和含量减少,提高了MBR去除有机污染物的效能,降低了膜有机污染.三维荧光光谱（EEM）表明,凹凸棒土-MBR工艺对于引起膜污染的污染物降解性能优于MBR工艺.更多还原

【Abstract】 Attapulgite clay,a kind of hydrated magnesium aluminum silicate mineral,has a perfect sorptive quality.In this paper,the effect of attapulgite clay dosed to a MBR(membrane bioreactor)-attapulgite clay system was studied,and comparing experiments between the conventional MBR and MBR-attapulgite clay system for disposing the micro-polluted water were carried out and the basic performances of those two MBRs were investigated.The results demonstrated that both of MBRs could remove COD(chemical oxygen demend)Mn,ammonia, UV(Ultraviolet)254, TOC(total organic carbon),and turbidity successfully.The membrane fouling in MBR-attapulgite clay system was much slighter than that in MBR system.The sludge mixture particle size in MBR-attapulgite was much smaller than that in the MBR.Moreover,the Zeta potential of sludge mixture in MBR-attapulgite clay system was about 11% ~34%lower than that in MBR.The FT-IR(Fourier transform infrered)tests indicated that the structure and composition of the organic matter in the mixture liquor were changed by dosing attapulgite,and the types and content of organic matters were also reduced,and the efficiency of removing organic contaminants was enhanced and thus membrane organic pollution was reduced.Excitation emission matrix(EEM)analysis proved that the pollutant degradation performance in MBR-attapulgite clay system was better than that in MBR.更多还原