TAILIEUCHUNG - Forecasting the water quality and the capacity of receiving wastewater of the Dong Nai river up to 2020

The study results showed that the water quality of Dong Nai river is currently achieved to the standard requirement and the using purposes. However, there were some sections where had locally polluted signs and had not be used (such as Dong Nai river in the section 3). | Journal of Science and Technology 54 (2A) (2016) 141-148 FORECASTING THE WATER QUALITY AND THE CAPACITY OF RECEIVING WASTEWATER OF THE DONG NAI RIVER UP TO 2020 Le Quoc Tuan1, *, Ngo Thi Kieu Diem2 1 Faculty of Environment and Natural Resources, Nong Lam University, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam 2 Dong Nai Department of Natural Resources and Environment, Dong Khoi Street, Tan Hiep Ward, Bien Hoa City, Dong Nai, Vietnam * Email: quoctuan@ Received: 1 April 2016; Accepted for publication: 15 June 2016 ABSTRACT Dong Nai river, the largest river system in the South East region, flows through five provinces in the South East area. Dong Nai river serves water for living, production, irrigation, aquaculture, navigation, and hydropower. It receives a huge impact from the natural and artificial elements, such as municipal wastewater from residential areas and urban centers; industrial wastewater from industrial zones, toxic wastewater from agricultural activities, etc [4, 6, 7, 12]. Therefore, the prediction of water quality change and the capacity of receiving wastewater are very essential in environmental protection for Dong Nai river. The study results showed that the water quality of Dong Nai river is currently achieved to the standard requirement and the using purposes. However, there were some sections where had locally polluted signs and had not be used (such as Dong Nai river in the section 3). Predictably up to 2020, pollutant load will increases, however, the water quality of Dong Nai river is still achieving the fundamental purpose of water supply, except TSS which, water from the area below Tri An damp to Dong Nai bridge, is not reached the regulation permit in the beginning and ending of rainy season. To protect the water of Dong Nai River, the optimal solution is necessary to collect and treat all wastewater from industrial, domestic, livestock and medical activities to get the standard permission before .

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