摘要
[目的]揭示太原市工业区不同下垫面降雨径流的污染特征,为探明工业水体污染的来源以及工业水污染治理提供科学依据。[方法]基于研究区2类不同下垫面的降雨径流水质监测数据,计算场次降雨径流污染物的平均浓度(EMCs)。监测项目包括化学需氧量(CODcr),NH_3—N,NO_3^-—N,TN,TP,Cu和Zn。[结果]2种下垫面条件下降雨径流的CODcr,NH_3—N,NO_3^-—N,TN和TP的浓度均超出Ⅴ类国家地表水标准,重金属污染不明显;污染物负荷(EMC)与降雨历时呈现负相关关系,符合指数回归方程。[结论]研究区降雨冲刷效应显著,随着降雨历时的增加,污染物浓度趋于降低。同时,与国内其他城市工业区相比,太原市工业区的污染程度较轻。
[Objective]The pollution characteristics of rainfall runoff on different underlying surfaces in Taiyuan industrial area were investigated in order to provide some scientific bases for water conservation and ascertainment of industrial water pollution sources.[Methods]Based on the monitoring data of runoff water quality from two underlying surfaces,the mean pollutant concentrations of event rainfall（EMCs）were calculated.The monitoring ingredients including：CODcr,NH3—N,NO3^-—N,TN,TP,Cu and Zn.[Results]Concentrations of CODcr,NH3—N,NO3^-—N,TN and TP in Taiyuan industrial area were all above the surface water range of standard Ⅴ.No obvious pollution of heavy metal pollution was observed.There was a negative correlation between pollutant loads（EMCs）and the rainfall time,it conformed with an exponential equation.[Conclusion]There was a remarkable rainfall erosion effect on pollutants,and the pollutants concentration decreased with the increase of rainfall duration.In contrast with the cases of other domestic cities,the runoff water quality was in a lesser contamination degree for Taiyuan industrial area.
出处
《水土保持通报》
CSCD
2015年第6期97-100,105,共5页
Bulletin of Soil and Water Conservation
基金
山西省高等学校科技创新项目"农业活动影响下的寒地土壤氮和有机碳运移机制及规律研究"(2014151)
山西省重点学科建设经费项目
关键词
径流水质
事件降雨径流污染负荷(EMC)
下垫面
太原市工业区
runoff quality
mean pollutant concentration of event rainfall（EMC）
underlying surface
Taiyuan industrial area
