Assessment of the impact on surface water quality due to brackish shrimp farming in Phu Tan commune, Tien Giang province in period 2020-2024

Tóm tắt

    In recent years, brackish water shrimp farming has developed strongly and become an important economic sector of Tien Giang province. However, the reuse of polluted shrimp ponds or the discharge of sludge into the surrounding environment has polluted the surrounding water sources, affecting the economic activities and lives of people in the area. Assessment of the impact of shrimp farming wastewater on river and estuary water environment in Phu Tan commune, Tien Giang province applies the Canadian CCME water quality index. The reaserch’s results showed that the quality of the surrounding surface water is at a serious pollution level during the discharge period of shrimp ponds into the environment with TSS and COD concentrations ranging from 10.5 - 435.5 mg/L and 8.3 - 236 mg/L, both exceeding the threshold B of QCVN 08:2023/BTNMT. The research’s results also showed that most of the monitoring locations around the discharge area had TSS and COD components exceeding the threshold and WQI_CCME was very low and corresponded to a serious pollution level. This is the factor showing the impact of discharge (wastewater, sludge) from brackish water shrimp ponds in the area contributing to surface water pollution in the area.