2026-06-19T13:07:44Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/82712024-01-10T01:05:32Zcom_10259_4244com_10259_5086com_10259_2604com_10259_4402col_10259_4245col_10259_6209

Diez Blanco, Victorino Iglesias, A. Cámara Nebreda, José María Ruiz Pérez, María Olga Ramos Rodríguez, Cipriano 2024-01-09T13:28:52Z 2024-01-09T13:28:52Z 2018-12 0273-1223 http://hdl.handle.net/10259/8271 10.2166/wst.2018.309 1996-9732 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. 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. application/pdf eng IWA Publishing Water Science & Technology. 2018, V. 78, n. 9, p. 1833–1842 https://doi.org/10.2166/wst.2018.309 Anaerobic filter Anaerobic filter membrane bioreactor Anaerobic membrane bioreactors Gas-lift Ingeniería química Bioquímica Chemical engineering Biochemistry A novel anaerobic filter membrane bioreactor: prototype start-up and filtration assays info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess Water Science and Technology 78 9 1833 1842