Autores UPV
Giménez García Juan Bautista,
Robles Martínez Ángel,
Carretero Martín Laura,
Durán Pinzón Freddy,
Ruano García María Victoria,
Gatti Marcela Noemi,
Ribes Bertomeu Jose,
Ferrer Polo José,
Seco Torrecillas Aurora
Abstract
The aim of this study was to assess the effect of several operational variables on both biological and separation process performance in a submerged anaerobic membrane bioreactor pilot plant that treats urban wastewater. The pilot plant is equipped with two industrial hollow-fibre ultrafiltration membrane modules (PURON® Koch Membrane Systems, 30m 2 of filtration surface each). It was operated under mesophilic conditions (at 33°C), 70days of SRT, and variable HRT ranging from 20 to 6h. The effects of the influent COD/SO 4-S ratio (ranging from 2 to 12) and the MLTS concentration (ranging from 6 to 22gL -1) were also analysed. The main performance results were about 87% of COD removal, effluent VFA below 20mgL -1 and biogas methane concentrations over 55% v/v. Methane yield was strongly affected by the influent COD/SO 4-S ratio. No irreversible fouling problems were detected, even for MLTS concentrations above 22gL -1. © 2011 Elsevier Ltd.
