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Some clogging occurs in most MBR systems regardless of membrane module type or geometry. Prevention or control measures are typically considered at the system design level and during operation but even with adequate pre-treatment, clogging can still occur.
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The IFAS-MBR process is less well explored than the MBBR-MBR. It is of interest to establish the performance of the IFAS-MBR when challenged with a variable influent C/N ratio, as this affects nutrient removal and the emission of N2O – a highly active GHG.
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Ragging is a type of clogging, where clogging relates to agglomeration of solids in the membrane tank. In the case of ragging, filament solids from textile materials join together to form long braids which are mechanically stable in the mixed liquor.
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Energy consumption is the most significant cost and contributor to environmental impact during MBR operation. The plant at Kaarst-Nordkanal highlights the impact of the on-site installation of AD on energy consumption and greenhouse gas emissions.
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The arguments surrounding the precise target sludge (or mixed liquor suspended solids, MLSS) concentration to use when running an MBR are pretty well developed but what is it that ultimately sets the solids concentration range?
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Evaluation of a treatment scheme comprising an AnMBR with a downstream algal membrane photobioreactor (MPBR). The AnMBR performance was assessed in terms of its organic carbon removal and biogas generation.
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