ASSESSING SURFACE WATER QUALITY IN FRESHWATER RESERVOIRS IN AN GIANG PROVINCE, VIET NAM
Abstract
Water quality is critical for a healthy ecosystem, this study was conducted to evaluate the surface water quality in lakes in An Giang Province from 2017 to 2019. Water quality was assessed using variables of temperature, pH, dissolved oxygen (DO), total suspended solids (TSS), chemical oxygen demand (COD), biological oxygen demand (BOD), nitrate (NO3- - N), phosphate (PO3 4- - P ), ammonia (NH+ 4 - N), and coliforms at nine locations
belonging to seven reservoirs including O Tuk Sa, Thuy Liem, Soai So, Soai Chek, O Thum, O Ta Soc, and Bung Binh Thien. Water quality criteria were assessed according to the National Technical Regulation on Surface Water Quality (QCVN 08-MT: 2015/BTNMT). Cluster analysis (CA) and principal component analysis (PCA)
were applied to group water quality to identify the main parameters affecting water quality in the reservoirs. The findings indicated that the water quality in the reservoirs were polluted by TSS, organic matters (DO was low, while COD and BOD were high), and microorganisms (coliforms). The PCA analysis showed that the water
variables including temperature, pH, DO, TSS, COD, BOD, NO3- - N, PO3 4- - P , NO3- - N, and coliforms significantly influenced the surface of the water in the reservoirs. It is necessary to investigate pollution sources to propose appropriate solutions to treat and maintain the water quality in the reservoirs of An Giang Province .
Downloads
References
quality of Da Den lake water and proposing general
management solutions. In Proceeding of scientific
and technological research and application for period
of 2013 – 2015; 2014.
[2] Van HTL, Cau LN, Dung BQ, Anh NTK, Tien NV,
Giang NT et al. Assess the current situation of water
quality in West Lake. Journal of Change Science
Climate. 2019; 8:58–61.
[3] Chounlamany V, Tachuling MA, Inoue T. Spatial and
temporal variation of water quality of a segment of
Marikina river using multivariate tsatistical analyses.
Water Science and Technology. 2017; 76:1510–1522.
[4] Feher IC, Zaharie M, Oprean I. Spatical and seasonal
variation of organic pollutants in surface water using
multivariate statistical techniqus. Water Science and
Technology. 2016; 74:1726–1735.
[5] Vega M, Pardo R, Barrado E, Deban L. Assessment of
seasonal and polluting effects on the quality of river
water by exploratory data analysis. Water Research.
1998; 32:3581–3592.
[6] Singh KP, Malik A, Sinha S. Water quality assessment and apportionment of pollution sources
of Gomti river (India) using multivariate statistical
techniques-a case study. Analytica Chimica Acta.
2005; 538:355–374.
[7] Zeinalzadeh K, Rezaei E. Determining spatial and
temporal changes of surface water quality using
principal component analysis. Journal of Hydrology:
Regional Studies. 2017; 13:1–10.
[8] Nhan TT. Application of statistical analysis techniques in assessing surface water quality: the case in
Tra Vinh. Journal of Science and Technology. 2013;
10:11–18.
[9] Au NH, Ngan PTK, Thuy HTT, Ngoc PNH.
Application of multivariate statistical analysis
in assessing groundwater quality in Tan Thanh
district, Ba Ria - Vung Tau Province. Science and
Technology Development. 2017; 1(M2):66–72. DOI:
https://doi.org/https://doi.org/10.32508/stdjsee.v1iM2.
446
[10] Giao NT. Evaluating Current Water Quality Monitoring System on Hau river, Mekong Delta, Viet Nam
Using Multivariate Statistical Techniques. Applied
Environmental Research. 2020; 42(1):14–25.
[11] Salah EAM, Turki AM, Othman EMA. Assessment of
water quality of Euphrates river using cluster analysis.
Journal of Environmental Protection. 2012; 3:1629–
1633.
[12] Liu CW, Lin KH, Kuo YM. Application of factor
analysis in the assessment of groundwater quality in
a Blackfoot disease area in Taiwan. Science of the
Total Environment. 2003; 313:77–89.
[13] Ministry of Environment and Natural Resources
(MONRE). QCVN 08-MT: 2015/BTNMT National
technical regulation on surface water quality; 2015.
[14] Boyd CE. Water quality for pond aquaculture. Research and development series. Auburn University
Auburn, Alabama: International center for aquaculture and aquatic environments Alabama aquaculture
experiment station Auburn University. 1998.
[15] Ly NHT, Giao NT. Surface water quality in canals
in An Giang Province, Viet Nam, from 2009 to
2016. Journal of Vietnamese Environment. 2018;
10(2):113–119.
[16] Mekong river Commission. Annual water quality data
assessment report. MRC Technical Paper; 2015.
[17] Tuan DDA, Thu BA, Trung NH. Assessing quality of
surface water for urban water supply source for Soc
Trang City. Scientific Journal of Can Tho University.
2019; 55(4):61–70.
[18] Ratpukdi T, Sinora S, Kiattisaksiri P, Punyapalakul
P, Siripattanakul-Ratpukdi S. Occurrence of trihalomethanes and haloacetonitriles in water distribution networks of Khon Kaen Municipality, Thailand.
Water Supply. 2019; 19(6):1748–1757.
[19] Galal-Gorchev H, Ozolins G, and Bonnefoy X. Revision of the WHO guidelines for drinking water
quality. Annalidell’IstitutoSuperiore di Sanita. 1993;
29:335–345.
[20] Kazi TG, Arain MB, Jamali MK, Jalbani N, Afridi
HI, Sarfraz RA et al. Assessment of water quality
of polluted lake using multivariate statistical techniques: A case study. Ecotoxicology and Environmental Safety. 2009; 72(20):301–309.
[21] UNICEF Handbook on Water Quality. United Nations
Children’s Fund (UNICEF), New York; 2008.
[22] Lien NTK, Huy LQ, Oanh DTH, Phu TQ, Ut VN.
Water quality in mainstream and tributaries of Hau
river. Can Tho University Journal of Science. 2016;
43:68–79.
[23] Barakat A, Baghdadi ME, Rais J, Aghezzaf B, and
Slassi M. Assessment of spatial and seasonal water quality variation of Oum Er Rbia river (Morocco) using multivariate statistical techniques. International Soil and Water Conservation Research.
2016; 4(4):284–292.
[24] Ty DV, Huy NH, Da CT, Ut VN, Viet TV. Evaluation
of water quality in Binh Thien lagoon, An Giang
Province. Scientific Journal of Can Tho University.
2018; 54(3B):125–131.
[25] Giao N.T. Surface water quality assessment using
phytoplankton and zoobenthos: a case study at Bung
Binh Thien, An Giang Province, Viet Nam. Journal
of Viet Nam Environment. 2020; 12(1):7–16.
