Reduction of Vibrio bacterial concentrations in wastewater from shrimp pond using Trapa bispinosa Roxb.

Abstract

In this study, reduction of vibrios’ concentrations using 3 different densities (1, 2 and 3 Kg/m²) of Trapa bispinosa Roxb. was investigated. The results showed that vibrios were found in wastewater at the beginning of this study  in a range of 4.00 ± 0.00 to 6.28 ± 0.00 × 10⁴ CFU/ml.     In the last week (4^th week) of the experiment, treatment with 3 kg/m² of Trapa bispinosa Roxb. showed the highest efficiency in reducing vibrio followed by treatment with 1 and 2 kg/m² of Trapa bispinosa Roxb. and the control as 2.28 ± 0.00 × 10⁴, 9.28 ± 0.01 × 10⁴, 2.03 ± 0.00 × 10⁵ and 2.63 ± 0.00 × 10⁵, respectively.  In conclusion, the most effective reduction of Vibrios in wastewater from shrimp pond in this study was the treatment with 3 kg/m² of Trapa bispinosa Roxb.