上海地区不同结构雨水花园对径流的去污效果分析

发布时间：2018-11-07 07:52

【摘要】：通过人工模拟实验,分析改良种植土、瓜子片、沸石、砌块砖等不同填料,不同填料层厚度(10、20、30、40、50cm),不同排水层厚度(10、15、20、25、30cm)的雨水花园对径流中有机物(COD)、总氮(TN)、总磷(TP)的去除效能差异,提出适用于上海地区雨水花园的最佳结构参数,为雨水花园在长江三角洲地区的推广和运行提供理论依据和技术支撑。研究结果表明,对COD去除最优的填料是沸石,其厚度为50cm最佳,最优的排水层厚度是30cm;对TN去除最优的填料是瓜子片,其厚度为10cm最佳,最优的排水层厚度是20cm;对TP去除最优的填料是瓜子片,其厚度为50cm最佳,最优的排水层厚度是30cm;综合COD、TN、TP的去除效果,最佳的雨水花园结构组合推荐采用瓜子片或改良种植土作为填料层填料,厚度范围为30~40cm,砾石排水层厚度范围为20~30cm。
[Abstract]:Through artificial simulation experiment, Rain Water garden of improved planting soil, melon seed slice, zeolite, block brick, different packing layer thickness (1020) and different drainage layer thickness (10 ~ 1515 ~ 20 ~ 2530cm) were analyzed to the total nitrogen (TN),) of organic matter in runoff by Rain Water garden, which had different packing thickness (10 ~ 20 ~ 30 ~ 30 cm) and different packing layer thickness (10 ~ (20) ~ 30 ~ (30) cm). Based on the difference of removal efficiency of total phosphorus (TP), the optimal structural parameters suitable for Rain Water Garden in Shanghai were put forward, which provided theoretical basis and technical support for the popularization and operation of Rain Water Garden in the Yangtze River Delta region. The results show that the best packing for COD removal is zeolite, whose thickness is 50cm and the optimal drainage layer thickness is 30 cm, and the best packing for TN removal is melon seed sheet, 10cm thickness is the best, and the optimal drainage layer thickness is 20 cm. The best packing for TP removal is melon seed slice, its thickness is 50cm best, and the optimal drainage layer thickness is 30 cm. According to the removal effect of COD,TN,TP, the best combination of Rain Water garden structure recommended to use melon seed slice or improved planting soil as packing, the thickness range is 30 ~ 40 cm, and the thickness of gravel drainage layer is 20 ~ 30 cm.
【作者单位】：上海交通大学农业与生物学院;
【基金】：上海市科委重点支撑项目(13231202402)
【分类号】：TU992

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