CAJ | 학술논문

选择无锡江南大学校园区作为研究对象，对其天然降雨及不同下垫面的3个观测点进行了监测取样。结果分析表明，随着降雨历时的延长，各污染物浓度总体呈下降趋势，但变化过程随着降雨特性的不同而不同。雨强均匀，水质波动较小；雨强较大，除NH ＋4-N 外，其余污染物变化均较大。不同下垫面地表径流污染程度不同，整体水质呈弱碱性，路面TP、COD和SS最高，分别达到0．216 mg／L、170 mg／L和710 mg／L；而草坪中的TN和NH＋4-N含量最高达7．5 mg／L、0．5 mg／L左右。同时，不同的污染物在不同季节呈现不同的污染特征。整体污染比较严重。
선택무석강남대학교완구작위연구대상，대기천연강우급불동하점면적3개관측점진행료감측취양。결과분석표명，수착강우력시적연장，각오염물농도총체정하강추세，단변화과정수착강우특성적불동이불동。우강균균，수질파동교소；우강교대，제NH ＋4-N 외，기여오염물변화균교대。불동하점면지표경류오염정도불동，정체수질정약감성，로면TP、COD화SS최고，분별체도0．216 mg／L、170 mg／L화710 mg／L；이초평중적TN화NH＋4-N함량최고체7．5 mg／L、0．5 mg／L좌우。동시，불동적오염물재불동계절정현불동적오염특정。정체오염비교엄중。
Jiangnan University was selected as the research area,and samples were obtained from three different underlying surfaces .The research result indicates that the concentration of pollutants reduced with the rainfall duration ,the changing process varied with characteristics of the rainfall .When the rainfall intensity was uniform,the runoff quality was less volatile;when it was great,the changes of water quality were larger,except NH+4-N.The runoff quality was different on different underlying surfaces and showed a weak alkaline on the whole.The concentration of TP (0.216 mg/L),COD (170 mg/L) and SS (710 mg/L) were higher on the road than any other underlying surfaces.The concentration of TN (7.5 mg/L) and NH+4-N (0.5 mg/L) showed an enrichment in the grassland.Furthermore,the pollutions in the runoff of Wuxi City was relatively serious and changed with the seasons.