天福庙水库底泥营养盐污染空间分布特征及资源化利用分析  

Analysis on Spatial Distribution Characteristics and Resource Utilization of Nutrient Salt Pollution in Sediment of Tianfumiao Reservoir

作　　者：张春雷[1] 杨露 陈森 ZHANG Chun-lei;YANG Lu;CHEN Sen(College of Environment,Hohai University,Nanjing 210098,China;Nanjing Dajian Environmental Technology Industry Development Co.,Ltd.,Nanjing 210044,China)

机构地区：[1]河海大学环境学院,南京210098 [2]南京大建环境科技产业发展有限公司,南京210044

出　　处：《四川环境》2025年第2期54-60,共7页Sichuan Environment

基　　金：国家重点研发计划课题“湖泊型水库深水精准清淤与绿色利用技术研究”(2022YFC3202702)。

摘　　要：为天福庙水库二期清淤工作提供基础资料了解底泥污染分布现状,于2023年采集天福庙水库底泥与水样,分析水质与底泥营养盐污染空间分布特征,采用有机污染与营养盐污染评价法分析评价底泥污染特征,并对底泥进行了资源化利用分析。结果表明:(1)水质参数呈现库首>库中>库尾的特点,库首氮、磷含量较往年明显升高,水污染加剧。(2)平面分布上,底泥营养盐呈现库首>库中>库尾的分布;垂直分布上,碳、氮、磷含量随深度变化呈先降后升的趋势。(3)有机污染与营养盐污染评价显示,库首为氮磷、有机污染严重区域,库尾和库中为轻度或中度污染区域;与其他水域相比,天福庙底泥氮含量中等,磷含量较高,碳含量显著高于其他水域。(4)天福庙底泥处理后可作为农田、林地、绿化用地等资源化利用。因此,天福庙水库二期清淤工程十分必要,同时可根据具体底泥分布现状开展清淤工作。研究成果可为天福庙水库的生态清淤、水质提升以及黄柏河流域的水环境治理提供数据支撑。To provide fundamental data for learning current distribution status of sediment pollution of the PhaseⅡdredging project in the Tianfumiao Reservoir,sediment and water samples were collected in 2023 and the spatial distribution characteristics of water quality and sediment nutrient pollution were analyzed,and the sediment pollution characteristics were analyzed with the organic pollution and nutrient pollution assessment method.The results showed that:(1)The water quality parameters were ranked as follows head>middle>tail.The contents of nitrogen and phosphorus in the head of the reservoir were significantly greater than those in previous years,indicating the water pollution was aggravated.(2)According to the horizontal distribution,the distribution of sediment nutrients followed the same trend.Vertically,the concentrations of carbon,nitrogen,and phosphorus decreased and then increased with depth.(3)Organic and nutrient pollution assessments revealed that the reservoir head was a region with severe nitrogen,phosphorus,and organic pollution,while the middle and tail areas exhibit light to moderate pollution.Compared to other water bodies,the Tianfumiao Reservoir sediment had moderate nitrogen levels,higher phosphorus content,and significantly higher carbon content.(4)The treated sediment of the Tianfumiao Reservoir can be used as farmland,forest land and green land for resource utilization.Therefore,the PhaseⅡdredging project is essential,and dredging can be carried out based on the specific distribution of the sediment.The research results of this paper can provide a basis for the improvement of water quality and ecological dredging of the Tianfumiao Reservoir,and provide data support for water environment management in the Huangbai River basin.

关 键 词：天福庙水库 底泥营养盐 空间分布 污染特征 资源化利用 

分 类 号：X524[环境科学与工程—环境工程]