Abstract
The successful application of anaerobic technology for the treatment of wastewaters is critically dependent on the use and development of high rate anaerobic reactors. In this study, a novel modified anaerobic inclining-baffled reactor (MAI-BR) which is a combination of regular suspended growth and fixed biofilm systems together with the modification of baffled-reactor configurations was developed. Furthermore, the MAI-BR start- up and performance were investigated for the treatment of recycled paper mill effluent (RPME). The start-up has been achieved shortly in 30 days and up to 71% of COD removal was observed, while methane yield increased from 0.018L to 0.808L CH4/day. The performance of MAI-BR treating RPME has showed that COD and BOD removal efficiencies were 94% and 93%, respectively. In the short period of 15 days, the biogas volume increased up to 1.05L per day, while the methane content reached 55%. Finally, a total of 0.55L CH4/day was yielded. These results proved that the design of MAI-BR succeed to treat complex type of wastewater.
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