RT info:eu-repo/semantics/article
T1 A novel anaerobic filter membrane bioreactor: prototype start-up and filtration assays
A1 Diez Blanco, Victorino
A1 Iglesias, A.
A1 Cámara Nebreda, José María
A1 Ruiz Pérez, María Olga
A1 Ramos Rodríguez, Cipriano
K1 Anaerobic filter
K1 Anaerobic filter membrane bioreactor
K1 Anaerobic membrane bioreactors
K1 Gas-lift
K1 Ingeniería química
K1 Chemical engineering
K1 Bioquímica
K1 Biochemistry
AB Anaerobic digestion allows efficient treatment of high loaded wastewater, and membrane technology allows obtaining high quality effluents with complete biomass retention. However, high biomass concentration interferes with membrane fouling. In the present work, a new bioreactor that integrates an attached biomass anaerobic culture on a fixed bed and a submerged membrane has been started up. The recirculation between the digestion and filtration chambers is coupled to the gas-lift effect of the bubbling employed for the scouring of the membranes, avoiding the use or electromechanical pumps that damage the suspended biomass. The support material retains the biomass in the digestion tank despite the downwards flow, avoiding the submerged membrane contacting with a high concentrated suspension. This novel system, called an anaerobic filter membrane bioreactor was immediately started up, achieving chemical oxygen demand (COD) removal efficiencies of 96% at an organic loading rate (OLR) of 7 kg COD/m3·d. In order to select filtration flux, specific gas demand and filtration cycle duration, the results of 15 short term assays, eight hours for each one, is presented for fluxes between 15.7 and 17.7 L/m2·h, cycle duration between 10 and 30 minutes, and three levels of scouring. It was checked that reversible and irreversible fouling were directly related when dTMP/dt > 2.5 mbar/min.
PB IWA Publishing
SN 0273-1223
YR 2018
FD 2018-12
LK http://hdl.handle.net/10259/8271
UL http://hdl.handle.net/10259/8271
LA eng
NO The authors gratefully acknowledge financial support provided by TCUE 2015- 2017 cofounded by European Regional Development Fond (ERDF) and Junta de Castilla y León and the inestimable collaboration of Campofrio Frescos and Ecoalia.
DS Repositorio Institucional de la Universidad de Burgos
RD 09-may-2024