01. ASSESSING SURFACE WATER QUALITY IN TIEN RIVER BELONGING TO TIEN GIANG PROVINCE, VIETNAM
Thanh bên bài viết
Giới thiệu
The study was conducted to evaluate surface water quality, location, frequency and monitoring indicators of surface water of Tien River, Tien Giang province in 2019. Data were collected from the Department of Natural Resources and Environment of Tien Giang Province at 7 survey locations at 4 times a year and water variables including pH, temperature, dissolved oxygen (DO), total suspended solids (TSS), chemical oxygen demand (COD) and biological oxygen (BOD), ammonium (N-NH4+), nitrite (N-NO2-), nitrate (N-NO3-), orthophosphate (P-PO43-), total nitrogen (TN), total phosphorus (TP) and coliform. Surface water quality was compared with National technical regulations on surface water quality (QCVN 08-MT:2015/BTNMT, column A1). The main water variables and potential sources of pollution affecting water quality were evaluated using principal component analysis (PCA), while the dense of water monitoring locations was assessed using cluster analysis (CA). The results showed that surface water of Tien River in Tien Giang province was contaminated with TSS, organic matters (low DO, high COD, high BOD), nutrients (TN, TP, P-PO43-) and coliform. Water quality was affected by several sources such as hydrology, residential areas, urban areas, industry, agriculture and fisheries. The PCA results showed that the main parameters affecting surface water were pH, DO, TSS, COD, BOD, N-NO2-, N-NO3-, P-PO43-, TN, TP, coliform. The overall results suggested that pH, DO, TSS, COD, N-NO3-, P-PO43-, TN, TP, coliform should be included in the monitoring program in this river segment. CA results revealed that from 7 current monitoring locations can be reduced to 4 locations and 4 monitoring periods into 2 - 3 monitoring periods still ensuring the representativeness of water quality on Tien River in Tien Giang province. The research results provide important information to support surface water monitoring on the Tien River.
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Trích dẫn
[2]. Mekong River Commission (2015). Lower Mekong regional water quality monitoring report. ISSN: 1683 - 1489. MRC Technical Paper No.51.
[3]. Giao, N. T. (2020). Evaluating current water quality monitoring system on Hau river, Mekong delta, Vietnam using multivariate statistical techniques. Applied Environmental Research, 42(1), 14 - 25.
[4]. Singh, K.P., Malik, A. and Sinha, S. (2005). Water quality assessment and apportionment of pollution sources of Gomti river (India) using multivariate statistical techniques - a case study. Analytica Chimica Acta. 538, 355 - 374.
[5]. Wang, X., Cai, Q., Ye, L. and Qu, X. (2012). Evaluation of spatial and temporal variation in stream water quality by multivariate statistical techniques: A case study of the Xiangxi River basin, China. Quaternary International, 282, 137 - 144.
[6]. Zeinalzadeh, K and Rezaei, E. (2017). Determining spatial and temporal changes of surface water quality using principal component analysis. Journal of Hydrology: Regional Studies, 13, 1 - 10.
[7]. American Public Health Association (1998). Standard methods for the examination of water and wastewater. 20th edition, Washington DC, USA 1998.
[8]. Feher, I. C., Moldovan, Z. and Oprean, I. (2016). Spatial and seasonal variation of organic pollutants in surface water using multivariate statistical techniques. Water Science and Technology, 74(7), 1726 - 1735.
[9]. Liu, C. W., Lin, K. H. and Kuo, Y. M. (2003). Application of factor analysis in the assessment of groundwater quality in a Blackfoot disease area in Taiwan. Science of the Total Environment, 313(1 - 3), 77 - 89.
[10]. Lien, N. T. K., Huy, L. Q., Oanh, D. T. H., Phu, T. Q., Ut, V. N. (2016). Water quality in mainstream and tributaries of Hau River. Can Tho University Journal of Science, 43, 68 - 79. (In Vietnamese).
[11]. Phu, T. Q, Ut, V. N. (2006). Water quality for pond aquaculture. Can Tho University. College of Aquaculture and Fisheries. 199 pp (in Vietnamese).
[12]. Ongley. E. D. (2009). Chapter 12: Water quality of the lower Mekong river. In: Campbell, I.C. (ed.): The Mekong: Biophysical Environment of an International.
[13]. Ly, N. H. T. and Giao, N. T. (2018). Surface water quality in canals in An Giang province, Viet Nam, from 2009 to 2016. Journal of Vietnamese environment, 10(2), 113 - 119.
[14]. Boyd, C. E. (1998). Water quality for pond aquaculture. Research and development series No. 43 August 1998 international center for aquaculture and aquatic environments Alabama agricultural experiment station Auburn University.
[15]. Tuan, D. D. A., Thu, B. A. and Trung, N. H. (2019). Assessing quality of surface water for urban water supply source for Soc Trang city. Journal of Can Tho University, 4A, 61 - 70. (In Vietnamese).
[16]. Thao, N. T. B. (2016). Evaluation of changes in surface water quality in some main rivers and canals in Can Tho city. Graduate thesis. Can Tho University.
[17]. Ratpukdi, T., Sinorak, S., Kiattisaksiri, P., Punyapalakul, P., Siripattanakul-Ratpukdi, P. (2019). Occurrence of trihalomethanes and haloacetonitriles in water distribution networks of Khon Kaen Municipality, Thailand. Water Supply, 19(6), 1748 - 1757.
[18]. Chea R., Grenouillet G. and Lek S. (2016). Evidence of water quality degradation in lower Mekong basin revealed by self - organizing map. PLOS ONE/DOL: 10.1371/journal.pone.0145527.
[19]. Nhien, H. T., & Nguyen, G. T. (2019). Environmental soil, water and sediment quality of Dong Thang landfill in Can Tho city, Vietnam. Applied Environmental Research, 41(2), 73 - 83.
[20]. Ministry of Environment and Natural Resources (MONRE) (2015). QCVN 08-MT:2015/BTNMT National technical regulation on surface water quality.
[21]. Barakat, A., Baghdadi, M. E., Rais, J., Aghezzaf, B., Slassi, M. (2016). Assessment of spatial and seasonal water quality variation of Oum Er Rbia river (Morocco) using multivariate statistical techniques. International soil and water conservation research, 4(4), 284 - 292.
[22]. Boyd, C. E. and Green, B. W. (2002). Water quality monitoring in shrimp farming areas: An example from Honduras, shrimp farming and the environment. The World Bank, NACA, WWF and FAO Consortium Program on shrimp farming and the environment; Auburn: USA
[23]. Bolstad, P. V., Swank, W. T. (1997). Cumulative impacts of landuse on water quality in a southern Appalachian watershed. J. Am. Water Resource. Assoc, 33(3), 519 - 533.
[24]. UNICEF Handbook on Water Quality (2008). United Nations Children's Fund (UNICEF), New York.
