| Literature DB >> 21820896 |
J B Giménez1, A Robles, L Carretero, F Durán, M V Ruano, M N Gatti, J Ribes, J Ferrer, A Seco.
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, 30 m² of filtration surface each). It was operated under mesophilic conditions (at 33 °C), 70 days of SRT, and variable HRT ranging from 20 to 6h. The effects of the influent COD/SO₄-S ratio (ranging from 2 to 12) and the MLTS concentration (ranging from 6 to 22 g L⁻¹) were also analysed. The main performance results were about 87% of COD removal, effluent VFA below 20 mg L⁻¹ and biogas methane concentrations over 55% v/v. Methane yield was strongly affected by the influent COD/SO₄-S ratio. No irreversible fouling problems were detected, even for MLTS concentrations above 22 g L⁻¹.Entities:
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Year: 2011 PMID： 21820896 DOI： 10.1016/j.biortech.2011.07.014
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642