Genetic Algorithm-Based Fuzzy Comprehensive Evaluation of Water Quality in Dongzhaigang
| Autor: | Yansha Wei, Huayang Gan, Yanyan Liang, Xiang-yun Zeng, Haijun He, Wen Jiasheng, Feng Li, Long Xiaolin, Shen Kaixuan, Jinwei Zhang |
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| Rok vydání: | 2015 |
| Předmět: |
Biochemical oxygen demand
Pollutant Pollution lcsh:TD201-500 lcsh:Hydraulic engineering media_common.quotation_subject Geography Planning and Development Chemical oxygen demand organic pollution Environmental engineering Aquatic Science water quality Biochemistry lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 genetic algorithm Water environment Dongzhaigang mangrove wetland Environmental science Seawater Water quality Eutrophication Water Science and Technology media_common |
| Zdroj: | Water Volume 7 Issue 9 Pages 4821-4847 Water, Vol 7, Iss 9, Pp 4821-4847 (2015) |
| ISSN: | 2073-4441 |
| Popis: | The concentrations of dissolved inorganic nitrogen (DIN NO2−–N, NH3–N, and NO3−–N), PO43−–P, dissolved oxygen (DO), chemical oxygen demand (COD), five-day biological oxygen demand (BOD5), oil, Si, and seven heavy metals (Hg, Cr, Cu, As, Zn, Pb, and Cd) in seawater from the Dongzhaigang National Mangrove Nature Reserve of China in 2013 were determined. Except for the concentrations of the COD, BOD5, Cr, Hg, Cu, As, and Cd, each index in seawater were found to be over the limits of I-Class seawater standards. The index of organic pollution showed that the pollution level in this study area reached level 6 eutrophication levels indicated that the nutritional level reached level 4. According to the water quality index model, the sea area was slightly polluted by heavy metals. In a genetic algorithm-based fuzzy comprehensive evaluation, the results for organic pollutants, nutrients, and heavy metal pollution can be combined to evaluate the water quality as a whole. Results showed that the sea area in Dongzhaigang did not have a healthy water environment, but was seriously polluted by organic pollutants and nutrients. |
| Databáze: | OpenAIRE |
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