Enhancing domestic wastewater treatment efficiency through combined microbubble oxidation and pistia stratiotes phytoremediation
Keywords:
BOD, COD, TSS, efficiency, treatmentAbstract
The increasing volume of domestic wastewater poses significant environmental challenges, necessitating innovative treatment methods to mitigate pollutants such as Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), and Total Suspended Solids (TSS). This study explores the integration of microbubble oxidation and phytoremediation using Pistia stratiotes (water lettuce) to enhance wastewater treatment efficiency. Microbubble oxidation, conducted for 6 hours, reduced BOD, COD, and TSS concentrations by 30%, 25%, and 20%, respectively, leveraging its high surface area-to-volume ratio and oxygen transfer efficiency. Following this, Pistia stratiotes, applied at a density of 0.5 kg/m² for 28 days, achieved additional reductions of 59% in BOD, 42% in COD, and 41% in TSS. The combined treatment method achieved an overall reduction of 59%, 56%, and 53% for BOD, COD, and TSS, respectively. This study highlights the synergistic effects of combining microbubble oxidation, which increases pollutant bioavailability, and phytoremediation, which assimilates and degrades these pollutants. The findings demonstrate that this hybrid approach is a cost-effective, energy-efficient, and sustainable solution for domestic wastewater treatment, with potential applications in both resource-limited and large-scale settings.
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