共查询到17条相似文献，搜索用时 937 毫秒
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为了科学利用滏阳河水资源,根据邯郸水环境监测分中心2005～2009年监测资料,采用综合污染指数法对滏阳河水质状况进行分析评价.评价结果除了东武仕水库外,其它断面自上而下水质逐渐变差一些,主要超标污染物质为氨氮、COD和挥发酚,滏阳河水质虽然相比以前有变好,但仍需要进一步改善,加强治理. 相似文献
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针对华北地区严重的地下水超采问题,选取河北境内的滹沱河、滏阳河、南拒马河3条补水河道的试点河段开展地下水回补效果评价。采用层次分析法,建立了包括入渗回补率、地下水水位回升率、水质改善度、水面面积变化率、水生态改善度和公众满意度等6项指标的地下水回补效果评价指标体系;选择简便实用的指标计算方法对河段补水前后指标的变化进行计算分析,并对生态补水的效果进行评价分级。结果表明：补水结束时,滹沱河、滏阳河、南拒马河3条试点河段的平均入渗回补率为65%,地下水水位相对回升率为分别为36%,17%,6%,水质改善度依次为51%,34%,90%,水面面积总计增加了8.56 km2,水生态改善度依次为46%,87%,94%,公众满意度分别为90%,90%,80%。利用建立的地下水回补效果评价方法计算滹沱河、滏阳河、南拒马河综合得分分别为84,47,64分,评价等级分别为"非常好" "一般" "较好"。3条试点河段评价结果与实际补水效果基本一致。 相似文献
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太子河流域水质模糊综合评价 总被引：1，自引：0，他引：1
采用模糊数学方法对太子河流域水质进行综合评价。沿程选取老官砬子、兴安、参窝坝下等8个干流断面和汤河桥、河洪桥、孟柳等6个支流断面,确定五日生化需氧量(BOD5)、化学需氧量(COD)、氨氮(NH3-N)、挥发酚(FN)等7个指标为评价因子,通过建立评价因子矩阵,计算各因子的权重及进行模糊综合运算,得出各监测断面的综合水质状况。水质模糊综合评价结果表明,太子河干流和支流各监测断面的综合水质较差,V类水质断面所占比例达85.7%。在各项评价指标中,BOD5和挥发酚所占权重较高,其次为COD和NH3-N等,这几项指标应该作为太子河流域十二.五污染减排和治理的重点。 相似文献
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运用层次分析法对汾河流域静乐县断面、岚县断面及娄烦县断面的水体质量进行评价,并确定水质优劣顺序,为优先污染控制以及水环境决策提供科学依据。评价结果为岚县断面监测水质较好,娄烦县断面次之,静乐县断面监测水质较差。在水质较差的断面应加大环保投入,加强水质管理,从根本上改善流域水质现状。 相似文献
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河流水质随接纳污染物的增多,致使河流水质变差,水体自净能力减弱,从而随着污水量、污染物种类的增多,则严重影响河流下游水质。本文根据河流水质及排污企业的污染物特征,运用弯曲河流稳态混合衰减累计流量（岸边排放）模式,对纳污水体的完全混合距离及断面混合水质进行评价,为流域的环境管理及评价提供科学依据。 相似文献
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城市河流治理是改善城市生态环境的重要一环,为了建设健康的城市水环境,有必要对改善河流水环境质量的可行技术方案进行研究。以合肥市十五里河为例,基于MIKE11软件平台构建河流一维水动力水质耦合模型,根据流域污染特征设定三种水质改善方案进行数值模拟分析,评价分析各情景方案的水质改善效果。结果表明:单纯依靠截污不能使国控断面水质达标,同时还会引起断流;考虑截污及污水处理厂尾水提标排放可使国控断面水质显著改善,但由于降雨径流非点源污染影响,部分时段水质不能达标;采取中水回用、就近引巢湖原水补水、截污及初期雨水截留组合措施,不需外调水补水,国控断面水质即可满足规划目标。 相似文献
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Lihu Yang Xianfang Song Yinghua Zhang Ruiqiang Yuan Ying Ma Dongmei Han Hongmei Bu 《Environmental Earth Sciences》2012,67(7):2141-2153
This study characterizes the major ion chemistry for river water in the upper reaches of Bengbu Sluice in the Huai River Basin in wet and dry seasons, and assessed the suitability of water quality for irrigation and human consumption. It is found that sodium and calcium are the dominant cations and bicarbonate is the dominant anion in most river water samples. River water in Zhoukou of the Ying River and Bozhou of the Guo River is characterized as a Na–Cl water type, whereas river water from the upper reaches and the lower reaches of the two cities is characterized as a Na-HCO3 water type, which may be attributed by anthropogenic influences in these cities. The river water types vary from the upstream to the downstream of the Fuyang sluice, which indicates that the sluices play a critical role in determining the water type. The water chemistry of these rivers clearly shows that the second group of rivers is affected more severely by waste effluent than is the first group. Calculated values of sodium adsorption ratio, %Na, and residual sodium carbonate indicate that, in general, most of the river water is of acceptable irrigation quality. The river water in Zhoukou section of the Ying River and the Bozhou section of the Guo River cannot be used as drinking water; pollution control should be further improved and enhanced across the river. 相似文献
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模糊数学分析方法在水环境评价中的应用 总被引：7，自引：0，他引：7
本文应用模糊数学原理，以淮河上游长台关站水质监测资料为依据，选择5个评价参数，用模糊概念进行推理，经过运算得出综合评价结果，与一般评价方法相比更接近客观。 相似文献
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沮河水环境质量评价方法的比较与选择 总被引：3，自引：0，他引：3
依据模糊集理论,运用 3种模型对沮河店头断面的水质进行了评价。在此基础上,分析了各种模型的优缺点,并提出了加权模糊综合评判模型。实际应用证明,利用加权模糊综合评判得到的评价结果更为合理,可靠,表明沮河水环境是逐年变好的,与实际相符。 相似文献
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Xinwei Lu Loretta Y. Li Kai Lei Lijun Wang Yuxiang Zhai Meng Zhai 《Environmental Earth Sciences》2010,60(8):1693-1699
Wei River is the major source of water for the urban residents, industrial production and agricultural activities in the central Shaanxi plain of China. Water quality of the Wei River was determined by collecting water samples from 25 locations along the Baoji Xi’an reach and analyzing for pH, EC, BOD5, DO, COD, F, Se, As, and Hg. Fuzzy synthetic evaluation with the entropy method for weight determination was used to assess the water quality of the river. Results indicate that the water quality of 23 sampling sites fall into the fifth grade (bad level), whereas two sampling sites are in the fourth grade (poor level). The comparison of this method with the typical fuzzy synthetic evaluation shows that it is effective in water quality assessment. The assessment results indicate that the Wei River is heavily polluted at most of the sampling locations, with mercury as the major pollutant. Strict enforcement of the regulations for domestic and industrial wastewater discharges is vital to avoid damage to the water environment and to protect human and ecological health. 相似文献
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