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首页> 外文期刊>Separation and Purification Technology >Influence of high lipid containing wastewater on filtration performance and fouling in AnMBRs operated at different solids retention times
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Influence of high lipid containing wastewater on filtration performance and fouling in AnMBRs operated at different solids retention times

机译：高含脂废水对在不同固体停留时间下运行的AnMBR的过滤性能和结垢的影响

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摘要

In this study, the filtration performance of anaerobic membrane bioreactors when treating a high strength lipid rich wastewater, corn-to-ethanol thin stillage, is evaluated at different solids retention times (SRTs). Long chain fatty acid (LCFA) inhibition, observed at high SRTs, concomitantly occurred with floc deterioration and soluble microbial product release. On the other hand, accumulation of LCFA on the sludge modified its surface hydrophobicity. Remarkably, a lesser degree of fouling was observed at increased sludge hydrophobicity. Cake layer formation was found as the most important contributor to membrane filtration resistance, whereas chemical cleaning tests indicated a low degree of irreversible organic fouling. Moreover, inorganic fouling in the form of phosphorus precipitates was identified both in the cake layer and on the membrane. (C) 2014 Elsevier B.V. All rights reserved.
机译：在这项研究中，厌氧膜生物反应器在处理高强度富含脂质的废水（玉米制乙醇稀釜馏物）时的过滤性能在不同的固体保留时间（SRT）下进行了评估。在高SRT下观察到的长链脂肪酸（LCFA）抑制伴随絮凝物变质和可溶性微生物产物释放而发生。另一方面，LCFA在污泥上的积累改变了其表面疏水性。值得注意的是，在污泥疏水性增加的情况下，结垢程度较小。发现滤饼层的形成是引起膜过滤阻力的最重要因素，而化学清洁测试表明不可逆的有机污垢程度低。此外，在滤饼层和膜上都发现了以磷沉淀物形式存在的无机污垢。 （C）2014 Elsevier B.V.保留所有权利。

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