[1]袁绍春,周静,杨孟颖,等.改良型干植草沟的水文水质控制效果[J].中国给水排水,2025,41(19):155-162.
　YUANShao-chun,ZHOUJing,YANGMeng-ying,et al.Hydrological and Water Quality Control Performance of Modified Dry Grass Swale[J].China Water & Wastewater,2025,41(19):155-162.
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改良型干植草沟的水文水质控制效果

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第19期 页码: 155-162 栏目: 出版日期: 2025-10-01
Title:
Hydrological and Water Quality Control Performance of Modified Dry Grass Swale
作者:
袁绍春1,2， 周静1,3， 杨孟颖1,3， 刘小霞3， 吴攀3， 杨清伟1， 吕波2
（1.重庆交通大学 水利水运工程教育部重点实验室，重庆 400074；2.重庆设计集团有限公司市政设计研究院，重庆 401120；3.重庆交通大学 环境水利工程重庆市工程实验室，重庆 400074）
Author(s):
YUAN　Shao-chun1，2， ZHOU　Jing1，3， YANG　Meng-ying1，3， LIU　Xiao-xia3， WU　Pan3， YANG　Qing-wei1， Lü　Bo2
（1. Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education， Chongqing Jiaotong University， Chongqing 400074， China； 2. Chongqing Design Group Co. Ltd. Municipal Design and Research Institute， Chongqing 401120， China； 3. Chongqing Engineering Laboratory of Environmental Hydraulic Engineering， Chongqing Jiaotong University， Chongqing 400074， China）
关键词:
改良型干植草沟;  水文性能;  水质净化;  淹没区;  落干期
Keywords:
modified dry grass swale;  hydrological performance;  water qulity purification; submerged zone;  drying period
摘要:
干植草沟作为目前应用广泛的雨洪控制设施，能够有效控制降雨径流。通过构建带有淹没区的改良型干植草沟模型，研究其在0.5、1、3、5 年降雨重现期下的水文水质控制效果，以及落干期出水污染物的变化规律。结果表明，在不同重现期下，改良型干植草沟在径流总量控制率、峰值流量削减率方面均优于传统干植草沟，并可延缓出流时间19~31 min；同时对径流中TSS、COD及氮和磷污染物的去除效果也有明显提升，在相同进水水质条件下，改良型干植草沟的NO3--N平均去除率为40.86%~61.26%，约为传统干植草沟的1.33倍。随着重现期的增加，受水力停留时间减小和径流冲刷强度增加的影响，改良型干植草沟的水文性能和污染物削减效果呈下降趋势。当落干期≤3 d时，COD和DO浓度出现明显下降，分别降至32.04、0.76 mg/L；当落干期>3 d时，两者的下降速率明显变缓并逐渐趋于稳定。
Abstract:
Dry grass swales, which are widely utilized as stormwater management facilities, have proven to be effective in controlling rainfall runoff. In this study, a modified dry grass swale model incorporating submerged zone was developed. The hydrological and water quality control performance under rainfall events with 0.5-year, 1-year, 3-year and 5-year recurrence periods was evaluated, along with the variation patterns of nitrogen and phosphorus concentrations in the effluent during drying periods. Under various recurrence periods, the modified dry grass swale demonstrated superior performance compared to traditional dry grass swale in terms of total runoff control rate and peak flow reduction rate. Additionally, it could delay the outflow time by 19 minutes to 31 minutes. Furthermore, the removal efficiencies of pollutants such as TSS, COD, nitrogen, and phosphorus in the runoff were significantly enhanced. Under identical influent quality conditions, the average removal efficiencies of NO3--N in the modified dry grass swales ranged from 40.86% to 61.26%, which was 1.33 times higher than that of traditional dry grass swale. As the recurrence period gradually increased, the hydrological performance and pollutants removal efficiency of the modified dry grass swale exhibited a declining trend, primarily due to the reduced hydraulic retention time and the increased runoff erosion intensity. When the drying period was less than or equal to three days, COD and DO decreased significantly, reaching 32.04 mg/L and 0.76 mg/L, respectively. However, when the drying period exceeded three days, the rate of decline for both parameters slowed considerably and eventually stabilized.

相似文献/References:

[1]付峥嵘,姚家兴,王冶,等.改良型干植草沟对校园雨水径流污染的控制效果[J].中国给水排水,2025,41(7):130.
　FUZheng-rong,YAOJia-xing,WANGYe,et al.Performance of Modified Dry Grass Swale for Mitigating Campus Stormwater Runoff Pollution[J].China Water & Wastewater,2025,41(19):130.

更新日期/Last Update: 2025-10-01