A Study to Assess the Effectiveness of Constructed Wetland Technology for Polluted Surface Water Treatment

Abstract

Abstract: The study aims to assess the applying effectiveness of constructed wetland technology for polluted surface water treatment. The experimental models were operated with 2 hydraulic loadings of 500mL/min/m² (T1) and 1500mL/min/m² (T2). The reed grass (Phragmites australis) was selected for the studying process. The surface water resource was removed from the pollutant components (TSS, BOD₅, COD) and harmful microorganisms (fecal coliform) which aim to protect the water quality and aquatic ecosystems. The results showed the treatment effectiveness of loading of 500mL/min/m² is higher than the loading of 1500mL/min/m², especially in the reed planting trial. In particular, the treatment efficiency of pollutants such as TSS, BOD₅, COD reached a high rate of 85%, 90%, and 87%, respectively. In addition, ANOVA statistical analysis showed the effectiveness of water quality parameters belong to two loadings were statistically significant (P<0.05). Thus, the surface water pollutant removal by subsurface vertical flow constructed wetland technology could be contributed to promoting the sustainable agricultural development.

Keywords: Constructed wetland, removal, surface water, Phragmites australis, pollution.

References:

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