This study assesses a modified anaerobic granular bed baffled reactor (GRABBR) which was assessed for municipal wastewater treatment at high organic loading rates (chemical oxygen demand ≥ 1100 mg/l) under varying temperatures. For the two mesophilic temperatures tested (37⁰C and 25⁰C) under steady state conditions the COD and BOD removal were 80 to 90 %. At lower organic loadings, the reactor operated as a completely mixed system with most of the treatment occurring in the first two compartments. The GRABBR also showed very high solids retention with low effluent suspended solids concentration for all organic and hydraulic conditions. Applications of GRABBR as a single unit, two-phase treatment system could be an economical option reducing the cost to achieve similar treatment goals for high strength wastewaters. The findings of this research suggest that the application of GRABBR is suitable for the treatment of multiple pollutants present in wastewater where each compartment acts as a specialised treatment stage with biogas production.
|Publication status||Published - 1 Jul 2015|
|Event||WEF-EESS Asia-Pacific Wastewater Treatment and Reuse Conference - University Town, Singapore, Singapore|
Duration: 28 Jun 2015 → 1 Jul 2015
|Conference||WEF-EESS Asia-Pacific Wastewater Treatment and Reuse Conference|
|Period||28/06/15 → 1/07/15|
Tota-Maharaj, K., & Akunna, J. C. (2015). Municipal wastewater treatment using anaerobic granular bed baffled reactor (GRABBR) under varying mesophilic temperatures. Paper presented at WEF-EESS Asia-Pacific Wastewater Treatment and Reuse Conference, Singapore, Singapore.