西安市皂河氨氮污染特征分析  

Analysis on Ammonia Nitrogen Pollution Characteristics in Zaohe River in Xi'an City

作　　者：董雯[1] 李怀恩[1] 李家科[1] 

机构地区：[1]西安理工大学西北水资源与环境生态教育部重点实验室,西安710048

出　　处：《城市环境与城市生态》2011年第6期22-24,共3页Urban Environment & Urban Ecology

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07317-004-001);国家自然科学基金(50979090);国家自然科学基金(50909080);陕西省自然科学基金资助项目(2009JQ7008)

摘　　要：通过对比西安市皂河多次水质监测结果,分析了城市小流域水环境中氨氮(NH4-N)的污染特征。结果表明:1)皂河NH4-N平均浓度在空间上的变化为上游和中游高于下游;2)枯水期24h的河流流量与NH4-N浓度负相关;3)洪水统计分析,NH4-N浓度峰均超前于流量峰;4)洪水过程中NH4-N污染物负荷主要以点源污染为主,非点源污染仅占6.0%。The water characteristics were analyzed during the flood and non-flood periods according to the water monitoring data of Zaohe River in Xi＇an city from March to August in 2010.The conclusion is that：1） the average concentration of ammonia nitrogen in the upstream and midstream are higher than in downstream in Zaohe River;2） the ammonia nitrogen concentration is negatively correlated with the river flow in dry season;3）in the flood statistic analysis,the concentration peak of ammonia nitrogen is ahead of the flow peak;4）the ammonia point source pollution load gives first place to the total pollution load,and the non-point source pollution is only 6.0% in the flood period in Zaohe River.

关 键 词：氨氮 非点源污染负荷 皂河 西安市 

分 类 号：X522[环境科学与工程—环境工程]