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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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The IWA World Water Congress & Exhibition 2018 was held 16−21 Sept 2018 at the Big Sight venue in Tokyo, Japan. Covering all aspects of water and wastewater treatment, the Congress held an academic session on MBRs.
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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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Euromembrane 2018, the conference of the European Membrane Society, was hosted by the Universitat Polytècnica de València in Spain’s truly beautiful third city from 9−13 July. The MBR Site reports...
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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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Over 150 wastewater treatment operators from all over the US converged on Austin, Texas for the 11th Annual Ovivo MBR Operators’ Workshop over 2−4 May 2018. The workshop is offered by Ovivo to their technology operators as a way to share knowledge.
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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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A number of studies have compared MBR system performance with that of the conventional activated sludge (CAS) process in treating municipal wastewater but none have yet compared their environmental, techno-economic and social acceptance aspects.
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MBRs use more energy compared with classical activated sludge (CAS) because the aeration requirements are greater. Aeration is needed both for the biological and membrane tanks for degrading the organics and scouring the membrane respectively.
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