基于城南河同步监测与水环境模型的区域水环境容量研究  

Study on Regional Water Environment Capacity Based on Synchronous Monitoring of Chengnan River and Water Environment Model

作　　者：徐博文 逄勇[1,2] 胥瑞晨 汪静娴 XU Bo-wen;PANG Yong;XU Rui-chen;WANG Jing-xian(Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes,Ministry of Education,Hohai University,Nanjing 210098,China;College of Environment,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098 [2]河海大学环境学院,江苏南京210098

出　　处：《环境科技》2021年第3期13-18,共6页Environmental Science and Technology

基　　金：国家自然科学基金资助项目(51879070).

摘　　要：为确保南京市浦口区城南河省考断面——龙王庙断面水质稳定,达到地表水Ⅳ类标准。根据研究区域内城南河水系特征开展实地水样采集与水质监测,并构建研究区域一维非稳态水环境数学模型,基于实测数据率定得到城南河NH_(3)-N和TP降解系数分别为0.09和0.12 d^(-1),采用平均相对误差(MRE)、均方根误差(RMSE)及相关系数分析(R^(2))3种模型评价法对实测值与模拟值进行误差及相关性分析。结合水环境容量计算方法,得到龙王庙断面达标时6处概化排口允许排污量,并进一步确定此时城南河NH_(3)-N及TP水环境容量分别为68.6,17.2 t/a,城南河主要水系入河污染物需总体削减25%。In order to ensure the stable water quality of Longwangmiao section, the provincial examination section of Chengnanhe in Pukou District, Nanjing, it meets the Class IV water standard on the surface. According to the characteristics of Chengnan River water system in the study area, the field water sample collection and water quality monitoring were carried out, and the one-dimensional unsteady water environment mathematical model of the study area was constructed.Based on the measured data, the degradation coefficients of NH3-N and TP in Chengnan River were calibrated to be 0.09 and 0.12 d-1, respectively. The error and correlation analysis between the measured and simulated values were carried out by using three model evaluation methods: Mean Relative Error(MRE), root mean square error(RMSE) and correlation coefficient Analysis(R2). Combined with the calculation method of water environmental capacity, the allowable discharge capacity of six generalized discharge outlets was obtained when the Longwangmiao section reached the standard, and it was further determined that the water environmental capacity of NH3-N and TP in Chengnan River was 68.6 and 17.2 t/a, respectively,and the pollutants in the main water system of Chengnan River should be reduced by 25% as a whole.

关 键 词：城南河 水质监测 水环境数学模型 水环境容量 

分 类 号：X8[环境科学与工程—环境工程]