Evaluation and Analysis of Water Quality at the Dahuofang Reservoir Based on the Fuzzy Evaluation and Analytical Hierarchy Process

Abstract:

Based on the fuzzy mathematics and analytical hierarchy process (AHP), the water quality was evaluated and analyzed according to 7 water pollution factors in 7 monitoring sections at the Dahuofang Reservoir which reflected the water quality at reservoir inflow, in reservoir area, and at reservoir outflow. The results show that: In 2010, the Dahuofang Reservoir was mainly polluted by nitrogen/phosphorus nutrient salts. Among the reservoir inflow, the Hunhe River was the most polluted. The water quality in reservoir area was mainly of Class II; the water quality at reservoir outflow was also of Class II, and was safe and reliable. According to the change of water quality monitoring value at three sections of Hunhe River (#73, #37 and #7) from 2005 - 2010, the pollution in the reservoir area had been effectively controlled, and the water quality in the reservoir area had been steadily improved.

• Periodical: Applied Mechanics and Materials (Volumes 316-317)
• Pages: 748-753
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.316-317.748
• Online since: April 2013
• Authors: Rui Huang, Long Xi Han, Hong Zhang, Hui Peng
• Keywords: Analytical Hierarchy Process (AHP), Dahuofang Reservoir, Fuzzy Comprehensive Index, Fuzzy Evaluation, Water Pollution

References

[1] Du Dong, Pang Qinghua, Wu Yan et al. Modern comprehensive evaluation methods and case collections [M]. Beijing: Tsing-Hua University Press, 2008.

[2] Guo Hua, Tang Zejun. Application of different water quality evaluation methods for evaluating the water quality of Qinghe River [J]. Water Resources Research, 2012 (1): 11-13.

[3] Yan Hui, Yu Jianqiao et al, Application of modified fuzzy comprehensive evaluation method in judging the water quality grade of Taihu Lake [J]. Environmental Monitoring and Early Warning, 2012 (2): 39-44.

[4] Xi Wenjuan, Jin Jing, Qian Hui, Application of modified fuzzy comprehensive evaluation method in evaluating the water quality [J]. Journal of Water Resources and Water Engineering, 2012 (3): 25-29.

[5] Xie Rongrong, Pang Yong et al. Water quality impact weight analysis and risk level judgment at the sensitive sites of water environment in the Jiashan region [J]. Environmental Sciences, 2012 (7): 2244-2250.

[6] Cao Yufeng, Lin Chunmei, Sun Xia. Application of fuzzy mathematics in evaluating the ocean water quality [J]. Ocean Technology, 2011 (2): 118-122.

[7] Xie Qun, Zhang Yubin, Sun Shengli, Comprehensive evaluation and analysis of water quality in the sea area of Liusha Bay [J]. Environmental Monitoring of China, 2011 (1): 77-83.

[8] Jin Xin, Hao Cailian, Yan Denghua et al. Health of river and its comprehensive evaluation research - example of Wulie River, Chengde City [J]. Water conservancy and Hydropower Technology, 2012 (1): 38-43.

[9] Wang Jian, Dong Xiaojun. Problems and countermeasures in constructing the ecological compensation mechanism in the western regionss [J]. Review of Economic Research, 2007 (44): 2-10.

[10] State Environmental Protection Administration, General Administration of Quality Supervision, Inspection and Quarantine, GB3838-2002 Environmental Quality Standard of Surface Water [s]. Beijing: China Environmental Sciences Press, 2002.

[11] Geng Yani. Evaluation of water quality at the Baoji section of Weihe River based on the fuzzy comprehensive index method [J]. Yellow River, 2011 (9): 36-40.

[12] Huang Rui, Zhang Fangxiu, Sun Juan et al. Analysis of water quality characteristics at the monitoring section of Dahuofang Reservoir [J]. Water Sciences and Engineering Technology, 2012 (1): 78-81.