季节性Kendall检验法在滦河干流水质分析中的应用  

Application of seasonal Kendall test method to analysis of water quality in main stream of Luanhe River

作　　者：郭丽峰[1] 郭勇 罗阳 张俊[1] 王乙震[1] 

机构地区：[1]海河流域水环境监测中心,天津300170 [2]海河流域水资源保护局,天津300170

出　　处：《水资源保护》2014年第5期60-67,共8页Water Resources Protection

基　　金：国家国际科技合作专项(2013DFA71340);国家水体污染控制与治理科技重大专项(2012ZX07203-002)

摘　　要：应用季节性Kendall检验法分析滦河水质变化趋势,并进行污染源识别。结果表明:滦河干流CODMn和NH3-N 2个指标的浓度、污染物输送率及流量调节浓度均没有明显变化;通过流量调节后上下游各站点浓度变化趋势趋于一致,同一站点CODMn和NH3-N的变化趋势也较一致,流量调节浓度趋势分析能够更好地反映水质变化趋势。5个监测站点中只有三道河子和乌龙矶2个断面的CODMn浓度出现小幅上升;5个监测站点NH3-N输送率均未出现上升趋势,三道河子、乌龙矶和滦县3个监测站点CODMn输送率呈现上升趋势。郭家屯监测站点以上CODMn和NH3-N主要受面源污染影响;郭家屯以下的4个监测站点受点源和面源污染的双重影响,以点源为主。总体上,滦河干流水质有所好转,污染源中含氮有机物浓度在不断降低或稳定不变,有机污染物总量呈增长趋势。指出郭家屯监测站点以上要积极推进水土保持工作,减少水土流失造成的面源污染;滦河下游要加强对点源污染的治理。The seasonal Kendall test method was used to analyze the change trend of water quality in the Luanhe River and identify the pollution source .The results show that the concentrations , pollutant transport rates , and flow control concentrations of COD Mn and NH3-N do not display a significant change trend in the main stream of the Luanhe River .The change trends of concentrations upstream and downstream of the sites were consistent , and the same-site CODMn and NH3-N change trends were also consistent after flow control .Flow control concentration analysis can better reflect the change trend of water quality .Of the five monitoring stations , two stations , the Sandaohezi and Wulongji stations ,had a slightly rising trend in COD Mn concentration .The NH3-N transport rate showed no rising trend at any of the five monitoring stations .The CODMn transport rate showed a rising trend at the Sandaohezi , Wulongji, and Luanxian stations .CODMn and NH3-N above the Guojiatun Station were mainly affected by non-point source pollution.CODMn and NH3-N at the other four stations were affected by both point source pollution and non -point source pollution , with the point source pollution being dominant .As a whole , the water quality in the main stream of the Luanhe River has improved , the concentration of nitrogen organic matter in the pollution source is decreasing or remains unchanged , and the total amount of organic pollutant shows an increasing trend .Soil and water conservation must be enhanced to reduce the non-point source pollution caused by soil and water losses above the Guojiatun Station.The point source pollution in the lower reaches of the Luanhe River should be controlled .

关 键 词：季节性Kendall检验法 水质变化 趋势分析 污染源识别 滦河干流 

分 类 号：X824[环境科学与工程—环境工程]