Đánh giá chất lượng nước mặt xung quanh khu xử lý chất thải rắn xã Mỹ Thọ, tỉnh Đồng Tháp

Abstract

The study assessed the surface water quality around the My Tho commune waste treatment area. It collected water samples at 10 locations and analyzing water quality parameters, including pH, DO, EC, TDS, TSS, N-NO₂^-, N-NH₄⁺, P-PO₄^3-, COD, TP and TN in January 2025. The results showed that the DO, COD, TSS, N-NO₂^-, N-NH₄⁺, TN, P-PO₄^3- and TP contents of surface water at the survey point adjacent to the waste treatment area were all higher than QCVN08:2023/BTNMT. Correlation analysis showed that EC correlated with TSS, TDS, N-NH₄⁺, and TN, TSS correlated with TDS and N-NH₄⁺, TDS correlated with N-NH₄⁺. PCA analysis showed that four main factors explained 86.72% of the water quality fluctuations in the study area; 11 water quality indicators assessed all affected the surface water quality and needed to be included in the monitoring program. CA analysis divided the sampling locations into four groups, with group I containing the lowest water quality being the points on the canal section directly adjacent to the solid waste treatment area. The main sources of surface water pollution are water sources from waste treatment areas and agricultural production. The study provides important information on the quality of surface water sources around the My Tho commune waste treatment area. It shows the need for solutions to monitor and manage the status of surface water pollution in the locality.