Inderscience Publishers

Performance evaluation of a shaft–type hybrid bioreactor for the removal of carbonaceous organic matter

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Courtesy of Inderscience Publishers

In comparison to an activated sludge process, the organics removal performance of a lab–scale hybrid bioreactor of volume 14.5 L was studied using waste automobile tyre–tube beads as bio–carrier. Batch study was performed using synthetic wastewater with soluble chemical oxygen demand (COD) ranging between 1000–3500 m/L for a period up to 9 h under purely suspended growth as well as hybrid condition with bio–carrier concentrations in the range of 10–30 g/L of reactor volume. Hybrid condition showed significant improvement in biomass settleability and organics removal with average COD removal efficiency of 89.6% as compared to 70.6% under purely suspended growth condition.

Keywords: activated sludge, deep–shaft reactors, suspended growth system, hybrid bioreactors, wastewater treatment, carbon oxidation, performance evaluation, carbonaceous organic matter, automobile tyres, tyre tube beads, biocarriers, chemical oxygen demand, COD

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