宿州市主要河流水质变化趋势分析及水质评价

发布时间：2018-06-17 05:27

本文选题：河流 + 水质变化趋势　；参考：《安徽理工大学》2015年硕士论文

【摘要】：本文依据2004-2010年宿州市5条主要河流(奎河、新濉河、新汴河、沱河和浍河)的水质监测资料,对河流水体中污染物浓度的空间分布特征以及河流水质的变化趋势进行分析,并对其水质污染状况进行评价,以期为区域水环境污染控制和综合治理提供科学参考。本研究通过对宿州市主要河流的污染物浓度的空间分布特征分析得出,研究的宿州市5条河流中,奎河水体的水质相对于其它4条河流较差,沱河和浍河水体的水质较好。其中奎河属外源型污染河流,沱河、浍河为内源型污染河流,新濉河中有机污染物来源于本研究流域,而含N类污染物则来自上游,这与新汴河刚好相反。本研究通过对宿州市主要河流水质的变化趋势分析得出,除DO和TP的浓度上升外,其它7类污染物的浓度均呈下降趋势；对于不同河流,除新汴河的有机类污染变化不明显外,其它4条河流的有机类污染均有所降低；对于不同河流断面,除奎河杨庄断面的营养盐类污染增加外,新濉河泗县八里桥断面、新汴河刘闸断面、沱河芦岭桥断面和浍河东坪集断面的营养盐类污染均有所降低,其它断面则变化不明显。宿州市地表河流的整体水质环境状况正在逐渐改善。本研究采用单因子污染指数法和内梅罗污染指数法对2004～2010年宿州市主要河流各监测断面的水质进行评价,评价结果显示：2004～2010年宿州市主要河流各监测断面的水质污染状况较为严重。奎河的杨庄和时村北大桥两个断面以及新濉河的符离闸和尹集两个断面的水质较差,水体水质在2004～2010年均表现为劣V类,其中奎河杨庄断面的水质处于污染最为严重的状态,多属严重污染；新汴河泗县汴河桥断面和浍河东坪集断面的水质较好,水体水质在2004～2010年多表现为Ⅳ类,其中浍河东坪集断面的水质处于最为良好的状态,多属清洁水质；其它断面的水质波动较小,但都有好转的趋势。
[Abstract]:Based on the monitoring data of water quality of five main rivers (Kuihe, Xinsui, Xinbianhe, Tuohe and Huihe) in Suzhou from 2004 to 2010, the spatial distribution characteristics of pollutant concentration and the changing trend of river water quality were analyzed. In order to provide scientific reference for regional water environment pollution control and comprehensive treatment, the water quality pollution is evaluated. By analyzing the spatial distribution characteristics of pollutant concentration in the main rivers of Suzhou, it is concluded that the water quality of Kuihe River is worse than that of the other four rivers, and the water quality of Tuo River and Huihui River is better than that of the other four rivers. The Kuihe River belongs to the exogenous polluted river, the Tuohe River and the Huihe River are the endogenous polluted rivers. The organic pollutants in the Xinsui River come from this study basin, while the N type pollutants come from the upstream, which is just opposite to the Xinbianhe River. By analyzing the trend of water quality change in main rivers in Suzhou, the results show that the concentrations of other seven kinds of pollutants are decreasing except for the concentration of do and TP, and the change of organic pollution of Xinbianhe is not obvious except for different rivers. The organic pollution of the other four rivers has been reduced, and for different river sections, except for the increase of nutrient salt pollution in Yangzhuang section of Kuihe River, the section of Bali Bridge in Xinsui County and the section of Liu Gate in Xinbianhe County, The nutrient salt pollution of the sections of Luling Bridge and Huihedong Pingji is decreased, but the change of other sections is not obvious. The overall water quality and environmental conditions of surface rivers in Suzhou are gradually improving. In this study, the single factor pollution index method and the Nemero pollution index method were used to evaluate the water quality of the monitoring sections of the main rivers in Suzhou from 2004 to 2010. The results show that the water pollution of the main rivers in Suzhou from 2004 to 2010 is serious. The water quality of the two sections of Yangzhuang and Shicun North Bridge of Kuihe River and of Fuliangluo and Yinji of Xinsui River are poor. The water quality of the Yangzhuang section of the Kuihe River is in the most polluted condition in the year of 2004 and 2010, and the water quality of the Yangzhuang section of the Kuihe River is in the most polluted state. The water quality of Bianhe Bridge section and Huihedong Pingji section of Xianbianhe County is good, and the water quality of Huihedong Pingji cross-section is in the best condition, most of which are clean water quality from 2004 to 2010. The water quality of other sections fluctuates little, but all have the tendency of improvement.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X522;X824

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