摘要
通过调研和分析上海市典型高架道路的雨水径流污染特征及变化规律,发现颗粒物(SS)和化学需氧量(COD_(Cr))浓度较高,氮磷营养类物质和重金属污染相对较轻,并且初期雨水弃流有助于雨水净化和利用程度的提升。雨水水量供需平衡计算表明,上海高架道路的全年雨水收集量可以满足桥下绿化的全年用水需求,在综合分析现有雨水利用标准和规范的基础上,提出参照《农田灌溉水质标准》(GB 5084—2005)确定雨水回用道路绿化的标准阈值。并对高架道路雨水净化处理的工艺要求提出几点建议。
The characteristics and changes of rainwater runoff pollution on typical elevated roads in Shanghai were investigated and analyzed. The results indicated that suspended solids （SS） and chemical oxygen demand （CODcr） of rainwater runoff were higher than nitrogen and phosphorus nutrient and heavy metal pollution, and the initial rainwater drainage contributed to the purification and utilization of rainwater. Water balance estimation showed that the annual rain collection of Shanghai elevated road could meet the annual demand for green irrigation under the viaduct. Based on the analysis of the existing rainwater utilization standards and norms, the standard threshold for determining the greening of rainwater reuse was proposed according to the Irrigation Water Quality Standard for Farmland （GB 5084 2005）. Some suggestions were put forward for the effective volume calculation of rainwater reservoir and the requirements of rainwater purification process.
出处
《应用技术学报》
2017年第4期304-308,共5页
Journal of Technology
基金
上海市科学技术委员会重点项目(16DZ1204904)
上海市高校青年教师培养基金(ZZyy14002)
上海应用技术大学引进人才基金(YJ2014-29)
上海应用技术大学大学生创新发展基金(DCX2017)资助
关键词
高架道路
径流污染
雨水回用
标准阈值
净化工艺
elevated road
runoff pollution
rainfall reuse
standard threshold
purification process
