The impact of high biodegradable COD fraction in poultry processing wastewater to SBR performance

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Abstract

The present study investigates the impact of high biodegradable COD fraction in poultry processing wastewater on the performance of lab-scale SBR. The SBR's reactor was operated under 3 phases with different airflow rates namely 2.5 L/min, 5.0L/min, and 7.0L/min; and each phase would have a constant 21days of Sludge Retention Time (SRT). The sample of poultry processing wastewater consists of 84.06% of biodegradable components and 15.94% of the non-biodegradable component. It was observed that high readily biodegradable soluble COD (rbsCOD) had caused a rapid bacteria's metabolism to consume nutrient as fast as possible which consequently tuned the COD removal efficiency from 85.0% to 92.9% and increased the SVI from 51.66 mL/g to 66.96mL/g (2nd phase) and 110.1 mL/g (3rd Phase). The removal efficiency of Ammonia Nitrogen and Total Suspended Solid was observed in the range from 69.3% to 81.2%, and 61.8% to 81.7% respectively. The fluctuation of the biodegradable COD component in poultry processing wastewater was observed to affect the oxygen demand, where the oxygen transfer efficiency dropped from 3.82% to 0.63% as the airflow rate increase from 2.5L/min to 7.0L/min along with the increase of biodegradable COD fraction. Hence, this experiment provides a clear perspective of poultry processing wastewater behavior to SBR performance.

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Kan, S. L. E., Fahmi, M. R., Ibrahim, A. H., Abidin, C. Z. A., & Khoo, A. S. (2021). The impact of high biodegradable COD fraction in poultry processing wastewater to SBR performance. In IOP Conference Series: Earth and Environmental Science (Vol. 646). IOP Publishing Ltd. https://doi.org/10.1088/1755-1315/646/1/012064

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