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首页> 外文期刊>Desalination and water treatment >Submerged membrane bioreactor for synthetic tomato processing wastewater treatment: membrane foulant and colloidal particles characterization
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Submerged membrane bioreactor for synthetic tomato processing wastewater treatment: membrane foulant and colloidal particles characterization

机译：用于合成番茄加工废水处理的浸没式膜生物反应器：膜污垢和胶体颗粒表征

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摘要

During the last several decades, membrane bioreactor technology has become increasingly popular for various industry treatments. In this study, a lab-scale submerged membrane bioreactor (SMBR) was operated to treat synthetic tomato processing wastewater under sub-critical flux. The membrane performance and the characteristics of membrane foulant were investigated. The SMBR demonstrated a high potential to handle the organic substances, ammonia and colloidal particles. The membrane foulant contained not only the extracellular polymeric substances but also some other organic matter and inorganic elements. The cake layer was identified as the main factor resulting in membrane fouling. The colloidal particles and solutes occupied a larger proportion in the membrane foulants compared with those of sludge suspension. Moreover, particle size in the washed liquid was considerably smaller than the sludge suspension in the SMBR. The gelation of colloidal and some organic foulants enhanced the formation of a gel layer, which caused fouled membrane that could not be totally recovered.
机译：在过去的几十年中，膜生物反应器技术已广泛用于各种工业处理。在这项研究中，实验室规模的淹没膜生物反应器（SMBR）用于处理亚临界通量下的合成番茄加工废水。研究了膜性能和膜污垢特性。 SMBR具有处理有机物，氨和胶体颗粒的巨大潜力。膜污染物质不仅包含细胞外聚合物，还包含其他有机物和无机元素。滤饼层被确定为导致膜结垢的主要因素。与污泥悬浮液相比，胶体颗粒和溶质在膜污垢中占较大比例。此外，洗涤液中的颗粒尺寸明显小于SMBR中的污泥悬浮液。胶体和一些有机污垢剂的胶凝作用增强了凝胶层的形成，导致无法完全回收的污损膜。

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