The importance of liquid phase analyses to understand fouling in membrane assisted activated sludge processes - six case studies of different European research groups
The importance of liquid phase analyses to understand fouling in membrane assisted activated sludge processes - six case studies of different European research groups
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DOI：
10.1016/j.memsci.2005.04.010
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发表时间：
2005-10-15
影响因子：
9.5
通讯作者：
Laabs, C
中科院分区：
文献类型：
--
作者：
Rosenberger, S;Evenblij, H;Laabs, C
结合活性污泥法的废水处理，微滤膜或超滤膜可用于直接污泥过滤（膜生物反应器概念）或作为沉降器后的抛光步骤（流出物过滤概念）。在这两种应用中，膜污染都是主要问题。最近的研究活动指出了可溶性和胶体物质对废水应用中膜污染的重要性。到目前为止，还没有标准化的方法用于污垢测定、相分离或液相分析。本文介绍了六个独立的研究项目。处理的水和研究目的基本上是不平等的。虽然从不同的角度出发，但所有小组最终都分别分析了污水和活性污泥上清液中的有机部分。所提出的案例研究的结果表明，明确的相关性的液相成分，无论是胶体或可溶性的，关于膜污染。不同的研究小组所采用的分析方法，并在可能的情况下，比较。考虑到所观察到的影响，液相有机物对膜污染，该文件的目的是作为一个可能的分析方法的标准化的一步。这些标准的可用性将允许直接比较不同的研究项目和应用，并有助于创建用于膜辅助废水处理中的故障排除的工具。(c)2005 Elsevier B.V.保留所有权利。
In combination with wastewater treatment by activated sludge processes, micro- or ultrafiltration membranes can be used either for direct sludge filtration (membrane bioreactor concept) or as a polishing step after the settler (effluent filtration concept). In both applications, membrane fouling is a major issue. Recent research activities point towards the importance of soluble and colloidal material on membrane fouling in wastewater applications. Up to date no standardised methods for fouling determination, phase separation, or liquid phase analyses exist. In this paper, six independent research projects are presented. Wastewaters treated and research aims were basically unequal. Although starting from different angles, all groups finally ended up analysing the organic fraction in the effluent and activated sludge supernatant, respectively. Results of the presented case studies show the clear relevance of liquid phase constituents, either colloidal or soluble, with regards to membrane fouling. The analytical methods applied by the different research groups are presented and - where possible - compared. Giving the observed impact of liquid phase organic matter on membrane fouling, the paper is intended as a step towards a standardisation of possible analytical methods. The availability of such standards would allow direct comparison of different research projects and applications and help to create tools for trouble shooting in membrane assisted wastewater treatment. (c) 2005 Elsevier B.V. All rights reserved.