Journal
SUSTAINABILITY
Volume 13, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/su13020792
Keywords
Tuojiang River; water pollution; heavy metal pollution; BP-ANN evaluation
Funding
- National Natural Science Foundation of China [41402248]
- National Key R&D Program of China [2019YFC1803500, 2019YFC1803504]
- Key Research and Development Projects of Sichuan Science and Technology Department [2018SZ0298]
- Scientific Research Project of Sichuan Education Department [16ZB0150]
- Nuclear Facility Decommissioning and Radioactive Waste Treatment Research Project of the State Administration of Science, Technology, and Industry of National Defense (Second Division of Science and Technology) [1521]
- Longshan Academic Research Talent Support Program of Southwest University of Science and Technology [18LZX309, 17LZX613, 18LZX638, 18LZXT03]
- Southwest University of Science and Technology Natural Science Foundation [18zx7125]
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This study assessed the water quality of the Tuojiang River Basin by measuring various parameters and analyzing pollution causes. It identified potential pollution risks and provided corresponding control suggestions.
This work aimed to assess the water quality of the Tuojiang River Basin in recent years to provide a better understanding of its current pollution situation, and the potential pollution risks and causes. Water quality parameters such as dissolved oxygen (DO), ammonia-nitrogen (NH3-N), total phosphorus (TP), the permanganate index (CODMn), five-day biochemical oxygen demand (BOD5), pH, and concentrations of various heavy metals were measured in the Tuojiang River, according to the national standards of the People's Republic of China. Samples were collected between 2012 to 2018 at 11 national monitoring sites in the Tuojiang River Basin. The overall water pollution situation was evaluated with back propagation artificial neural network (BP-ANN) analysis. The pollution causes were analyzed considering both industrial wastewater discharge in the upper reaches and the current pollution situation. We found potential risks of excessive NH3-N, TP, Cd, Hg, and Pb concentrations in the Tuojiang River Basin. Moreover, corresponding water pollution control suggestions were given.
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