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首页> 外文期刊>Environmental engineering and management journal >EFFECTS OF RAINFALL ON REDUCTION OF URBAN NON-POINT SOURCE POLLUTION LOAD IN A LOW IMPACT DEVELOPMENT (LID) RESIDENCE COMMUNITY IN SHAANXI, CHINA
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EFFECTS OF RAINFALL ON REDUCTION OF URBAN NON-POINT SOURCE POLLUTION LOAD IN A LOW IMPACT DEVELOPMENT (LID) RESIDENCE COMMUNITY IN SHAANXI, CHINA

机译：降雨对陕西省陕西省低影响开发（LID）住宅界降低城市非点源污染负荷的影响

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摘要

In order to study the influence of different rainfall processes on the total pollutant load of non-point sources and pollutant load reduction rate of the low-impact development facilities, this paper took a Low Impact Development (LID) community of Tianfuheyuan, Fengxi new city, Xixian new district in Shaanxi, China as an example, and constructed the storm water management model (SWMM) of the study area. The computed results demonstrate that the storm patterns have obvious effects on the pollutant load and its reduction. The effect trend is similar to the runoff and runoff control process by LID measures. With the increase of the return period, the total pollutant load increases and the pollutant load reduction rate decreases. That is, the higher the rainfall intensity is, the less pollutant the LID measures could mitigate. Compared with the return period of 1a, the total pollutant load increased by 74.36% - 248.26% and the pollutant load reduction rate decreased by 3.67% - 10.27%, respectively, when the return period is 2a - 10a. The rain peak location has slight impact on the urban non-point source pollution. Compared with the rain peak coefficient of 0.2, the total pollutant load is decreased by 2.24% - 6.95% and the pollutant load reduction rate is increased by 0.24% - 0.74%, respectively, when the rain peak coefficient is 0.3 - 0.6. This research can help understand the mechanism of the non-point source pollution mitigated by the LID measures, and plan or design the LID measures.
机译：为了研究不同的降雨过程对低抗冲击发展设施的非点源和污染物减少率的污染物总载荷的影响，本文采取了天福渊，凤溪新城的影响力（盖子）社区。 ，中国陕西西县新区为例，建造了研究区的雨水管理模型（SWMM）。计算结果表明，风暴模式对污染物负荷的影响明显及其减少。效果趋势与盖子措施类似于径流和径流控制过程。随着返回期的增加，总污染物负荷增加，污染物减少率降低。也就是说，降雨强度越高，盖子措施可能减少的污染物可能减少。与1A的返回期相比，总污染物载荷增加74.36％ - 248.26％，返回期为2A - 10A时，污染物减少率分别下降了3.67％ - 10.27％。雨峰位置对城市非点源污染影响略有影响。与雨峰系数0.2相比，总污染物载荷减少2.24％ - 6.95％，当雨峰系数为0.3-0.6时，污染物减少率分别增加0.24％ - 0.74％。该研究可以帮助了解盖措施减轻的非点源污染的机制，并计划或设计盖措施。

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  • 来源
    《Environmental engineering and management journal》 |2020年第11期|2021-2028|共8页
  • 作者

    Tong Yu; Shi Jia; Hou Jingming; Li Donglai; Li Jiake; Deng Zhaoxian;

  • 作者单位

    Xian Univ Technol State Key Lab Ecohydraul Northwest Arid Reg China Xian 710048 Peoples R China;

    Xian Univ Technol State Key Lab Ecohydraul Northwest Arid Reg China Xian 710048 Peoples R China;

    Xian Univ Technol State Key Lab Ecohydraul Northwest Arid Reg China Xian 710048 Peoples R China;

    Xian Univ Technol State Key Lab Ecohydraul Northwest Arid Reg China Xian 710048 Peoples R China;

    Xian Univ Technol State Key Lab Ecohydraul Northwest Arid Reg China Xian 710048 Peoples R China;

    Fengxi New City Dev & Construct Grp Co Ltd Shaanx Technol Res Ctr Sponge City Xian 712000 Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    low impact development; non-point source pollution; pollutant load; runoff control; SWMM model;

    机译：低影响开发;非点源污染;污染物负荷;径流控制;SWMM模型;

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