Authors

Phu Huynh 1* , Han Huynh Thi Ngoc 2

Affiliations

1 Hochiminh City University of Technology (Hutech); h.phu@hutech.edu.vn

2 Hochiminh City University of Nature Resources & Environment;  htnhan_ctn@hcmunre.edu.vn

*Correspondence: h.phu@hutech.edu.vn; Tel: +84–966687548

Abstracts

The quality of coastal water and sediment environment in Bac Lieu province tend to deteriorate due to waste (solid, liquid, gas) from the mainland into the river basins before being discharged into the sea. The paper presents the results of research on water quality in river basins dumping into the sea and coastal sediments. By methods of research, survey, observation, analysis of water quality, coastal sediment and calculation of WQI index, compared with QCVN 08–MT:2015/BTNMT, QCVN 43:2017/BTNMT (column sediments of salt water, brackish water). The results of physical and chemical parameters according to the dry season and the rainy season exceed the permitted threshold; pH: 6,69–9,20; TSS: 8–1,928 mg/l (exceeding 38.5 times). BOD5: 7–325 mg/l, COD: 13.8–602.6 mg/l, Ammonium (NH4+): 0.1–28.5 mg/l. WQI Nha Mat estuary: 37–73 and Ganh Hao seaport WQI: 52–68. Thus, the water environment in the continental river basins and coastal water quality shows signs of pollution from 2016 to 2020. Sediments in the coastal area in 2018, there are 6/12 samples with high Arsenic concentration, in 2019–2020 there are 10/12 areas with Cd, Pb (0.57–0.83 mg/l). This result will serve the planning, planning, management and control of water quality, coastal sediments and river basins to the coast of Bac Lieu Province in the direction of sustainable development.

Keywords

Bac lieu Province; The shallow seawater areas; Sediment; Water quality; WQI

Cite this paper

Phu, H.; Han, H.T.N. Research on assessment of suface water environment and sediment in seawater shallow area in Bac Lieu Province and proposing solutions for protection. VN J. Hydrometeorol. 2021, 7, 74-84. 

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