Sub-critical long-term operation of industrial scale hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) system

Abstract

ElsevierRobles Martínez, Á.; Ruano García, MV.; Ribes Bertomeu, J.; Ferrer, J. (2012). Sub-critical long-term operation of industrial scale hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) ngerobma@upv.es AbstractThe aim of this study was to evaluate the long-term performance of hollow-fibre

Long-term operation of a pilot scale anaerobic membrane bioreactor (AnMBR) for the treatment of municipal wastewater under psychrophilic conditions

“…Nevertheless, these fluxes are still low compared with those obtained in the aerobic membrane bioreactor (Lin et al, 2013;Smith et al, 2012). Robles et al, (2012) also reported a high flux of around 13-10 L/m 2 h, with solid concentrations of between 10-25 g/L, and temperatures in the range of 33-20ºC with an average specific gas demand per membrane area of 0.23 Nm 3 /m 2 h.…”

“…Although the authors suggested that, the chemical cleaning of the membrane would have been desirable once quarterly. Nevertheless, Robles et al, (2012) reported that, no chemical cleaning was conducted during system operating for more than one year.…”

Design methodology for submerged anaerobic membrane bioreactors (AnMBR): A case study

“…o Chemical reagents used to clean membranes: According to Judd and Judd [6] and previous experiments (see, for instance, [28]), 9.5 months can be set as the interval for membrane cleaning with chemicals when operating under critical filtration conditions. Therefore, in this study, the membrane chemical cleaning frequency ranged from 2 months (operating at J20 = 120% of JC20) to 18 months o Membrane replacement cost: As regards membrane lifespan, the cost of replacing the membrane was contemplated in order to evaluate the entire lifecycle cost of the system.…”

The operating cost of an anaerobic membrane bioreactor (AnMBR) treating sulphate-rich urban wastewater

“…This is considered to be one of the main constraints on membrane operating because it can result in a high membrane fouling propensity and therefore high energy demand for membrane scouring by gas sparging [7].…”