排污口设置对长江安徽段水质影响预测  

Prediction of Impact of Sewage Outfall Setting on Water Quality in Anhui Section of Yangtze River

作　　者：范臣臣 张鹏 宋刚福 FAN Chen-chen;ZHANG Peng;SONG Gang-fu(School of Environmental and Municipal Engineering,North China University of Water Resources and E1ectric Power,Zhengzhou 450046,China)

机构地区：[1]华北水利水电大学环境与市政工程学院,河南郑州450046

出　　处：《水电能源科学》2020年第12期41-44,共4页Water Resources and Power

基　　金：华北水利水电大学高层次人才科研启动项目;河南省高等学校青年骨干教师培养计划项目(2018GGJS077)

摘　　要：为分析排污口设置对长江安徽段水质的影响,构建二维非稳态模型,利用水质水量实测资料对模型进行率定及验证,选取COD、氨氮等指标,预测分析不利条件下排污口的两种排放工况(改造前、改造后)对周边水域的扩散范围及其影响程度。结果表明,在两种工况条件下,敏感目标水质均未受影响;改造后排放产生的污染带影响范围及浓度最大增量值均小于改造前,但均在相应功能区范围内;两种工况下总氮排放产生的污染带范围最大,其改造前最大污染带长2.134km、面积为0.265 6km^2,改造后最大污染带长2.085km,面积为0.244 5km^2。In order to analyze the impacts of sewage outfall set-up to Water quality of Anhui reach of Yangtze River,a two-dimensional unsteady model was developed.Parameters of model were calibrated and verified according to the measured hydrological and water quality data.With the research objects of chemical oxygen demand and ammonia nitrogen,the influence scope and extent of two kinds of emission conditions involving before and after emission reduction on the surrounding water under adverse conditions were predictively analyzed.The results suggested that under the two conditions,the target water quality had not been affected;The influence range and maximum concentration increment value of the pollution zone produced by the transformation were smaller than those before the transformation,but they were all within the scope of corresponding functional areas.Under the two working conditions,the maximum pollution zone produced by total nitrogen emission was 2.134 km long and the area was 0.265 6 km^2.After reconstruction,the maximum pollution zone was 2.085 km long and 0.244 5 km^2 in this area.

关 键 词：长江 排污口设置 二维水量水质模型 影响预测 

分 类 号：X522[环境科学与工程—环境工程]