Abstract：
:This study presents the performance characteristics of a plug flow phase separated anaerobic granular bed baffled reactor (GRABBR) fed with brewery wastewater at various operating conditions. The reactor achieved chemical oxygen demand (COD) removal of 93-96% with high methane production when operated at organic loading rates (OLRs) of 2.16-13.38kg COD m(-3)d(-1). The reactor configuration and microbial environment encouraged the acidogenic dominant zone to produce intermediate products suitable for degradation in the predominantly methanogenic zone. Noticeable phase separation between acidogenesis and methanogenesis mainly occurred at high OLR, involving a greater number of compartments to contribute to wastewater treatment. The highly active nature and good settling characteristics of methanogenic granular sludge offered high biomass retention and enhanced methanogenic activities within the system. The granular structure in the acidogenic dominant zone of the GRABBR was susceptible to disintegration and flotation. Methanogenic granular sludge was a multi-layered structure with Methanosaeta-like organisms dominant in the core.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Baloch MI,Akunna JC,Collier PJdoi
10.1016/j.biortech.2006.06.014subject
Has Abstractpub_date
2007-07-01 00:00:00pages
1849-55issue
9eissn
0960-8524issn
1873-2976pii
S0960-8524(06)00336-1journal_volume
98pub_type
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