Đánh giá ô nhiễm và sức tải môi trường khu vực vùng nuôi hải sản tỉnh Kiên Giang

Abstract

Kien Giang is the only province in the Southern Vietnam where the government focuses on developing sustainable marine aquaculture. Pollution load into the sea area of Vietnam is calculated based on the region's socio-economic data at the present and 2030. By rapid assessment method of the waste load from activities development, the results show that, in 2020, the sea area of Kiengiang has received 86852.67 tons of COD; 16232,736 tons of BOD; 105,794 tons NO2-; 4311,699 tons of NH4+ and about 1729,128 tons of PO₄ from the residential, industrial, aquaculture, livestock, and soil leaching activities. By 2030, this amount of waste will increase to about 1.1 - 1.2 times, with the main sources of pollution being population and livestock. Besides, the pollution risk map of Kien Giang sea area has been developed in this study. In addition, based on the results of calculation of environmental capacity, the area and production of aquaculture in the potential mariculture areas proposed in Kien Giang sea waters are 23,000 ha and 180000 tons, respectively, for the year of 2030, especially two areas including Phu Quoc island and Nam Du archipelago