Abstract:
:The performance of a pilot scale anaerobic membrane bioreactor (AnMBR), comprising an upflow anaerobic sludge blanket (UASB) reactor coupled to an external ultrafiltration membrane treating municipal wastewater at 18±2°C, was evaluated over three years of stable operation. The reactor was inoculated with a mesophilic inoculum without acclimation. The AnMBR supported a tCOD removal efficiency of 87±1% at hydraulic retention time (HRT) of 7h, operating at a volumetric loading rate (VLR) of between 2 and 2.5kgtCOD/m(3)d, reaching effluent tCOD concentrations of 100-120mg/L and BOD5 concentrations of 35-50mgO2/L. Specific methane yield varied from 0.18 to 0.23Nm(3)CH4/kgCODremoved depending on the recirculation between the membrane module and the UASB reactor. The permeate flow rate, using cycles of 15s backwash, 7.5min filtration, and continuous biogas sparging (40-60m/h), ranged from 10 to 14Lm(2)/h with trans-membrane pressure (TMP) values of 400-550mbar.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Gouveia J,Plaza F,Garralon G,Fdz-Polanco F,Peña Mdoi
10.1016/j.biortech.2015.03.002subject
Has Abstractpub_date
2015-06-01 00:00:00pages
225-33eissn
0960-8524issn
1873-2976pii
S0960-8524(15)00293-Xjournal_volume
185pub_type
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