基于“源-质”响应的香溪河流域问题解析  

Problems analysis based on the response of water quality to pollution sources in Xiangxi River Basin

作　　者：申振玲 周奉 孙溢点 张万顺[1,2,3] 凌海波 王琪 李龙媛 杨丽娜 SHEN Zhenling;ZHOU Feng;SUN Yidian;ZHANG Wanshun;LIN Haibo;WANG Qi;LI Longyuan;YANG Lina(School of Resource and Environmental Sciences,Wuhan University;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University;China Development Strategy and Planning Research Institute,Wuhan University;Hubei Provincial Academy of Eco-Environmental Sciences;Ecological Environment Bureau of Yichang)

机构地区：[1]武汉大学资源与环境科学学院 [2]武汉大学水资源与水电工程科学国家重点实验室 [3]武汉大学中国发展战略与规划研究院 [4]湖北省生态环境科学研究院 [5]宜昌市生态环境局

出　　处：《环境工程技术学报》2022年第2期485-492,共8页Journal of Environmental Engineering Technology

基　　金：国家自然科学基金项目(41877531);长江生态环境保护修复联合研究项目(第一期)(2019-LHYJ-01-0208-25)。

摘　　要：开展流域水环境问题症结分析,是支撑流域水生态环境修复治理和精准管控的关键途径。应用“空-地-水”一体化模型体系,面向香溪河流域构建了“源-质”响应关系模型,并进一步对该流域水环境问题开展定量精准解析。根据水质监测断面2019年实测数据进行模型验证,总氮(TN)、总磷(TP)浓度相对误差均在10%以内。结果表明,污水处理厂、工业源和畜禽养殖是造成香溪河水质污染和富营养化的3类主要污染源,总贡献率超过60%。对于泗湘溪断面,污水处理厂输出的TN、TP总量为193.28和40.51 t/a,工业源为226.25和31.69 t/a,畜禽养殖为187.75和29.82 t/a;对于长沙坝断面,污水处理厂输出的TN、TP总量为376.31和48.97 t/a,工业源为295.30和39.91 t/a,畜禽养殖为128.09和41.61 t/a。基于当前流域水环境综合治理的迫切需求,该流域未来应加大这3类污染源的截污控源力度。Analysis of the causes of water environment problems is the key way to support the water environment fine-management and water eco-environment recovery in the river basins.The Air-ground-water integrated model system was applied to establish the response model of water quality to pollution sources in Xiangxi River Basin,and the water environment problems in the basin were quantitatively analyzed.The model was verified according to the measured data of the water quality monitoring sections in 2019,and the relative error of total nitrogen(TN)and total phosphorus(TP)concentrations were within 10%.The results showed that sewage treatment plants,industrial enterprises and livestock breeding were three main sources of water pollution and eutrophication of Xiangxi River Basin,with a total contribution rate of more than 60%.For Sixiangxi section,TN and TP discharge from sewage treatment plants were 193.28 and 40.51 t/a,with 226.25 and 31.69 t/a from industrial sources,and 187.75 and 29.82 t/a from livestock breeding,respectively.For Changshaba section,TN and TP produced by sewage treatment plants were 376.31 and 48.97 t/a,with 295.30 and 39.91 t/a from industrial sources,128.09 and 41.61 t/a from livestock breeding,respectively.Based on the urgent needs of comprehensive water environment management,the efforts to control pollution of these three kinds of sources should be intensified in the future.

关 键 词：香溪河流域 污染负荷 源解析 “空-地-水”一体化模型 

分 类 号：X52[环境科学与工程—环境工程]