Li Bin, Wang Zhi-Wei, An Ying, Wu Zhi-Chao
Huan Jing Ke Xue. 2014 Feb;35(2):643-50.
The properties of membrane foulants in MBR treating high-salinity wastewater were studied. Results showed that the removal efficiency of organics and NH4(+) -N was stable and high-quality effluent was obtained after the operation time of 121 d; the ratio of VSS/ SS decreased and SVI declined at the same time, indicating that the inorganic content of sludge increased which might lead to more compact flocs and higher settling ability; SMP and EPS of the sludge were largely changed with a lower proportion of protein and a higher proportion of humic acid. Scanning electron microscope-energy diffusive X-ray analyzer (SEM-EDX) demonstrated that Na, Al, Mg, Ca, K, Fe, Ti, Cr, W, Si and Cl were the major inorganic elements in membrane foulants; Gel filtration chromatography (GFC) illustrated that there were organic matters with high molecular weight trapped by membrane and formed the membrane foulants; Fourier transform infrared (FTIR) spectroscopy and Excitation emission matrix (EEM) fluoresce spectroscopy discovered that carbohydrates, protein and humic acid were the main content of organics in membrane foulants.; quantitative analysis of membrane foulants showed that the amount of inorganic membrane foulants were significant when treating high-salinity wastewater.
研究了膜生物反应器处理高盐废水时膜污染物的特性。结果表明，运行121 d后，有机物和NH4(+) -N的去除效率稳定，且获得了高质量的出水；VSS/SS比值下降，同时污泥容积指数（SVI）降低，表明污泥中无机成分增加，这可能导致絮体更密实，沉降能力更强；污泥的溶解性微生物产物（SMP）和胞外聚合物（EPS）发生了很大变化，蛋白质比例降低，腐殖酸比例升高。扫描电子显微镜-能量扩散X射线分析仪（SEM-EDX）表明，Na、Al、Mg、Ca、K、Fe、Ti、Cr、W、Si和Cl是膜污染物中的主要无机元素；凝胶过滤色谱（GFC）表明，有高分子量有机物被膜截留并形成膜污染物；傅里叶变换红外（FTIR）光谱和激发发射矩阵（EEM）荧光光谱发现，碳水化合物、蛋白质和腐殖酸是膜污染物中有机物的主要成分；膜污染物的定量分析表明，处理高盐废水时无机膜污染物的量很大。
