李延,毕见霖,王立硕,唐文忠,单保庆,杨柳,陈静.暴雨径流对非常规水源补给城市河流水质冲击研究[J].环境科学学报,2015,35(2):443-448
暴雨径流对非常规水源补给城市河流水质冲击研究
- Effect of storm runoff on the water quality of urban rivers with unconventional water sources
- 基金项目：村镇环境监测适宜关键技术研究(No.2012BAJ24B01)
- 毕见霖
- 1. 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085;2. 中国矿业大学(北京), 北京 100083
- 王立硕
- 1. 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085;2. 中国矿业大学(北京), 北京 100083
- 唐文忠
- 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085
- 单保庆
- 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085
- 摘要：选择北运河流域典型非常规水源补给城市河流(凉水河)为研究对象,阐述暴雨径流对非常规水源补给城市河流水体物理化学特征的影响.结果表明,非暴雨期间,凉水河水体pH和DO平均值分别为7.67和3.88 mg·L-1;耗氧物质COD和氨氮(NH4+-N)平均质量浓度分别为47.41 mg·L-1和8.39 mg·L-1;富营养化元素总氮(TN)和总磷(TP)平均质量浓度分别为16.34 mg·L-1和1.45 mg·L-1.暴雨期间,雨水径流汇入收纳水体后,COD、NH4+-N、TP平均质量浓度明显上升,最高值分别达到108、14.24、3.02 mg·L-1.在空间分布上,COD、NH4+-N、TN和TP质量浓度变化趋势随土地利用类型变化特征趋于一致,从城镇区至农村区,均呈逐渐上升趋势.
- Abstract：Liangshui River, a typical urban river in North Canal River Watershed was selected to investigate the effect of storm runoff on the water quality of urban rivers with unconventional water sources. The results showed that the average values of pH and DO were 7.67 and 3.88 mg·L-1, respectively; the average concentrations of oxygen-consuming pollutants (COD and NH4+-N) were 47.41 and 8.39 mg·L-1, respectively; and the average concentrations of eutrophication elements (TN and TP) during the period without storm runoff were 16.34 and 1.45 mg·L-1, respectively. However, after storm runoff into the river, the concentrations of COD, NH4+-N and TP all obviously increased, and the highest values reached 108, 14.24 and 3.02 mg·L-1, respectively. In addition, the spatial distributions of COD, NH4+-N, TN and TP concentrations were relatively consistent with a gradual increase from urban to rural area.
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