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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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The main contribution to the total expenditure (TOTEX) of a membrane installation is normally the capital (or investment) expenditure (CAPEX). Labour costs can be as significant as both membrane replacement and energy consumption...
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The University of Technology in Sydney, Australia hosted the 10th IMSTEC in February 2020. Despite bushfires and coronavirus, the organisers delivered a stimulating and well-attended event on behalf of the Membrane Society of Australasia.
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The interest in anaerobic MBRs (AnMBRs) relates largely to resource recovery and the circular economy − anaerobic treatment permits energy recovery through conversion of the organic carbon (OC) to a methane biogas.
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Clogging can take place within MBR module channels as a thick deposit which fills the channel (‘sludging’ or ‘localised dewatering’). Long rags or braids can develop in the tank itself which wrap around the membrane tank infrastructure.
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Unlike regular physical membrane filtration, virus removal by MBRs is not limited to simple size exclusion. Adsorption onto the sludge solids and the membrane cake layer represent important removal mechanisms, as well as removal by predation.
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In our 2019 wastewater survey, we asked the question: What influences the selection of wastewater treatment technologies for water reuse? Read the results of our survey and what it means in the context of MBR technology.
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3D computer simulation can reduce, replace or complement real-life testing. In MBR applications, the value lies in OpEx minimisation, footprint reduction, fouling control, optimisation of performance and reduction of real-life experimenting and testing.
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A feature of the MBR market over the past decade is the surge in the number of very large (≥100 MLD, or megalitres/day) installations, particularly in China. Of the 55 known global installations of greater than 100 MLD capacity, 39 are in China.
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Ever more versatile and sophisticated options for designing and managing plants are being developed. As CAE tools become more widespread and suppliers develop more tools, so the reliability of their predictions increases – promoting further take-up.
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Cost information from installations in Spain is compared with that for conventional activated sludge (CAS) technologies. CAPEX and OPEX information was used to generate cost curves as a function of flow capacity or population equivalent for both.
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MBR membranes are prone to fouling (in particular, biofouling) by organic matter originating from the microbial cells. Biofoulants vary in concentration with the activated sludge characteristics like MLSS concentration, SRT and feedwater chemistry.
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