Evaluation of water environment quality and risk assessment for main inflow rivers of Nansi Lake
Liu Ying1, Dong Wenping2, Liu Peng3, Liu Xiaohui1, Wang Weiliang1,4
1. College of Geography and Environment, Shandong Normal University, Jinan 250358, China;
2. Shandong Academy of Environmental Science and Environmental Engineering Co.,Ltd., Jinan 250013, China;
3. Shandong Blue Town Analysis & Test Co.,Ltd., Jinan 250014, China;
4. Institute of Environment and Ecology, Shandong Normal University, Jinan 250014, China
Abstract:In order to study the water environment quality and risk of the main inflow rivers of Nansi Lake, water was sampled in fourteen inflow rivers in 2013. Three routine(COD, NH3-N and TP)indexes and the concentrations of 4 heavy metals(Cr, As, Cd and Pb)were analyzed. Water quality, spatial distribution characteristics and risk of heavy metals were assessed using a combination method of comprehensive pollution index, analytic hierarchy and risk quotient. The results are shown as follows: The most polluted rivers are Xuechengxiaosha river, Xuechengdasha river, Chengguo river and Laoyun river, whose values of comprehensive pollution index are 1.943, 1.744, 1.302 and 1.713, respectively; and attention should be paid to the pollution of TP. The result of analytic hierarchy agrees with the result of comprehensive pollution index. The result of risk quotient for heavy metals shows that the risks of Cr6+, Pb and As are lower but Cd has a certain risk. The overall water quality of inflow rivers of Nansi Lake is good.
刘莹, 董文平, 刘鹏, 刘晓晖, 王炜亮. 南四湖主要入湖河流水环境质量状况及风险评估[J]. 科技导报, 2017, 35(9): 56-61.
Liu Ying, Dong Wenping, Liu Peng, Liu Xiaohui, Wang Weiliang. Evaluation of water environment quality and risk assessment for main inflow rivers of Nansi Lake. Science & Technology Review, 2017, 35(9): 56-61.
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