Abstract：
:A dual irradiation process involving aerobic thermophilic irradiation pretreatment (ATIP) and intermittent irradiation anaerobic digestion was developed to improve the digestion of waste-activated sludge. First, the effect of ATIP on further anaerobic digestion of activated sludge in batch mode was investigated. When exposed to ATIP for 24 h, the digestion reactor gave the highest methane yield, removed the most dissolved organic carbon (DOC) and showed the most effective reduction of VS compared to other irradiation times. This process was further enhanced by using an anaerobic fluidised-bed reactor packed with carbon felt in semi-continuous mode for digesting the pretreated activated sludge under intermittent irradiation conditions. Dual irradiation for 24 h followed by 60 min of anaerobic irradiation processing per day turned out to be optimal. This resulted in 65.3% of VS reduction, 83.9% of DOC removal ratio and 538 ml/g-VS of methane yield.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Yang Y,Tsukahara K,Yang R,Zhang Z,Sawayama Sdoi
10.1016/j.biortech.2011.09.018subject
Has Abstractpub_date
2011-11-01 00:00:00pages
10767-71issue
22eissn
0960-8524issn
1873-2976pii
S0960-8524(11)01287-9journal_volume
102pub_type
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