Assessment of pollution load from industrial activities of Nghi Son Economic Zone (Thanh Hoa province)

Cao Thi Thu Trang, Dinh Hai Ngoc, Nguyen Van Thao


Thanh Hoa coastal waters have received a large amount of waste from industrial activities of Nghi Son Economic Zone such as thermal power, vegetable oil production, wood processing, steel rolling and petroleum refinery. Employing environmental rapid assessment method, the discharged industrial wastewater from Nghi Son Economic Zone was calculated. The pollution load includes organic matter (13 thousand tons), total nitrogen - TN (27.4 thousand tons), total phosphorous - TP (967.8 tons), total suspended solid - TSS (12.3 thousand tons). In addition, wastewater also contained phenol, oil and grease, cyanide, sulfites, heavy metals (Fe, Zn, Cr). If this wastewater is not treated, the amount of pollutant discharged to Thanh Hoa coastal area will be much greater and impact on sensitive ecosystems. 


Pollution load, pollutants, industry, economic zone, Nghi Son.

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Asmah, R., and Biney, C. A., 2001. Assessment of air, water and land-based sources of pollution in the coastal zone of the Accra-Tema metropolitan area. Journal of the Ghana Science Association, 3(3), 126–135. DOI: 10.4314/jgsa.v3i3.17775.

Hosseini-Zare, N., Gholami, A., Panahpour, E., and Jafarnejadi, A., 2014. Pollution load assessment in the soil and water resources: a case study in Karun river drainage basin, southwest of Iran. European Online Journal of Natural and Social Sciences, 3(3 (s)), 427–434.

Zhao, W. L., Yang, S. Y., Wang, J., Xiao, J. M., Lu, X. X., Lin, J., Huang, P., and Cai, M. G., 2015. Load estimation and assessment of land-based pollution for Quanzhou bay and their relevance to the Total Quantity Control of Pollutants Discharged into the Sea (TQCPS) Program in China. Estuarine, Coastal and Shelf Science, 166, 230–239.

El-Nakib, S., Alameddine, I., Massoud, M., and Abou Najm, M., 2020. Nutrient pollutant loading and source apportionment along a Mediterranean river. Environmental Monitoring and Assessment, 192, 1–17.

Tran Duc Thanh, Tran Van Minh, Cao Thi Thu Trang, Vu Duy Vinh, Tran Anh Tu, 2012. Environmental Carrying Capacity of Ha Long bay - Bai Tu Long bay. Publishing House for Science and Technology, 297 p. (in Vietnamese).

Cao Thi Thu Trang, Tran Duc Thanh, Le Xuan Sinh, 2013. Assessment of pollution load into Tam Giang - Cau Hai lagoon and a prediction to 2020. Vietnam Journal of Marine Science and Technology, 13(3), 276–283.

Le Xuan Sinh, Le Van Nam, Luu Van Dieu, Cao Thi Thu Trang, Nguyen Thi Phuong Hoa, Tran Duc Thanh, 2015. Assessment of pollution load into Thi Nai lagoon, Vietnam and prediction to 2025. International Journal of Sciences, 4(06), 116–127. DOI: 10.18483/ijSci.741.

Mai Trong Hoang, Ngo Xuan Nam, Tran Van Thuy, Mai Thi Huyen, 2018. Determination of pollution load into Truong Giang river, Quang Nam province. VNU Journal of Science: Earth and Environmental Sciences, 34(4), 71–79. DOI:

Economoponlos P. Alexander, 1993. Assessment of Sources of Air, Water and Land Pollution. Part 1: Rapid Inventory Techniques in Environmental Pollution, WHO, Geneva.

San Diego-McGlone, M. L., Smith, S. V., and Nicolas, V. F., 2000. Stoichiometric interpretations of C: N: P ratios in organic waste materials. Marine Pollution Bulletin, 40(4), 325–330.

Tran Van Nhan, Ngo Thi Nga, 2002. Textbook on wastewater treatment technology. Science and Technics Publishing House, Hanoi, 332 p. (in Vietnamese).

Weber-Scannell, P. K., and Duffy, L. K., 2007. Effects of total dissolved solids on aquatic organism: a review of literature and recommendation for salmonid species. In American Journal of Environmental Sciences, 3(1), 1–6. DOI: 10.3844/ajessp.2007.1.6.

Minnesota Pollution Control Agency, 2009. Low Dissolved Oxygen in Water Causes, Impact on Aquatic Life - An Overview. Water Quality/Impaired Waters 3.24, February 2009.

Sánchez-Bayo, F., van den Brink, P. J., and Mann, R. M., 2011. Ecological impacts of toxic chemicals. Bentham Science Publishers. DOI: 10.2174/97816080512121110101.

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