Sub-critical filtration conditions of commercial hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) system: The effect of gas sparging intensity

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RESEARCH PRODUCT

Sub-critical filtration conditions of commercial hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) system: The effect of gas sparging intensity

María Victoria Ruano José Ferrer ÁNgel Robles F. Garcia-usach

subject

Hollow-fibre membrane INGENIERIA HIDRAULICA Biofouling Microfiltration Modified flux-step method Ultrafiltration Wastewater Sludge law.invention Gas sparging Bioreactors law Flux-step method Critical flux Waste Management and Disposal Sparging Hollow fiber membrane Priority journal Waste water management Chemistry Membrane General Medicine Equipment Design Hollow fiber reactor Membrane Gases Waste water Porosity Anaerobic membrane bioreactor Environmental Engineering Ultrafiltration Bioreactor Bioengineering Water filtration Article Bacteria Anaerobic Bioreactor Microfiltration Industrial hollow-fibre membranes Filtration TECNOLOGIA DEL MEDIO AMBIENTE Submerged anaerobic membrane bioreactor Chromatography Membranes Fouling Renewable Energy Sustainability and the Environment Long-term change Membranes Artificial Equipment Failure Analysis Hollow fiber membrane Comparative study Anoxic conditions

description

A submerged anaerobic MBR demonstration plant with two commercial hollow-fibre ultrafiltration systems (PURON®, Koch Membrane Systems, PUR-PSH31) was operated using municipal wastewater at high levels of mixed liquor total solids (MLTS) (above 22gL -1). A modified flux-step method was applied to assess the critical flux (J C) at different gas sparging intensities. The results showed a linear dependency between J C and the specific gas demand per unit of membrane area (SGD m). J C ranged from 12 to 19LMH at SGD m values of between 0.17 and 0.5Nm 3h -1m -2, which are quite low in comparison to aerobic MBR. Long-term trials showed that the membranes operated steadily at fluxes close to the estimated J C, which validates the J C obtained by this method. After operating the membrane for almost 2years at sub-critical levels, no irreversible fouling problems were detected, and therefore, no chemical cleaning was conducted. © 2012 Elsevier Ltd.

year	journal	country	edition	language
2012-06-01

10.1016/j.biortech.2012.03.085 https://doi.org/10.1016/j.biortech.2012.03.085