排蓄)水层材料对简单式绿色屋顶的运行效果影响研究
摘要：以简单式绿色屋顶的排(蓄)水层为研究对象,设置3种排(蓄)水层材料,从绿色屋顶出流水量、水质以及植被生长状况三方面,研究不同排(蓄)水层材料对绿色屋顶运行效果的影响差异。研究结果表明,使用多孔纤维棉的绿色屋顶装置降雨滞留率高于使用塑料排水板和陶粒的装置,但是其需要更长的雨前干期来恢复多孔纤维棉的滞蓄能力；3个绿色屋顶装置均能有效削减SS浓度和负荷,其中使用多孔纤维棉的装置效果最佳；使用多孔纤维棉的装置出流COD负荷略低于普通屋面,使用塑料排水板和陶粒的装置出流COD负荷高于普通屋面；使用多孔纤维棉的绿色屋顶的植被覆盖度最高,绿色周期更长。
关键词：简单式绿色屋顶排蓄)水层水量控制水质调控植被覆盖度
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参考文献参考文献
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[1] YIN D,EVANS B,WANG Q,et al.Integrated 1Dand 2D model for better assessing runoff quantity control of low impact development facilities on community scale[J].Science of the Total Environment,2020,720:137630.
[2] CASCONE S,COMA J,GAGLIANO A,et al.The evapotranspiration process in green roofs:A review[J].Building and Environment,2019,147:337-355.
[3] JGJ 155-2013种植屋面工程技术规程[S].
[4] BOLLMAN M A,DESANTIS G E,DUCHANOIS R M,et al.A framework for optimizing hydrologic performance of green roof media[J]. Ecological Engineering,2019,140:105589.
[5] GONG Y,YIN D,FANG X,et al.Factors affecting runoff retention performance of extensive green roofs[J].Water,2018,10(9):1217.
[6] LIU W,FENG Q,CHEN W,et al.Runoff retention assessment for extensive green roofs and prioritization of structural factors at runoff plot scale using the Taguchi method[J].Ecological Engineering,2019,138:281-288.
[7] 葛德,张守红．不同降雨条件下植被对绿色屋顶径流调控效益影响[J]．环境科学,2018,39(11):5015-5023.
[8] 段丙政,赵建伟,高勇,等．绿色屋顶对屋面径流污染的控制效应[J]．环境科学与技术,2013,36(9):57-59.
[9] 郑美芳,邓云,刘瑞芬,等．绿色屋顶屋面径流水量水质影响实验研究[J]．浙江大学学报(工学版),2013,47(10):1846-1851.
[10] GONG Y,YIN D,LI J,et al.Performance assessment of extensive green roof runoff flow and quality control capacity based on pilot experiments[J].Science of the Total Environment,2019,687:505-515.
[11] ZHANG Z,SZOTA C,FLETCHER T D,et al.Green roof storage capacity can be more important than evapotranspiration for retention performance[J].Journal of Environmental Management,2019,232:404-412.
[12] CARPENTER C M G,TODOROV D,DRISCOLL C T,et al.Water quantity and quality response of a green roof to storm events:Experimental and monitoring observations[J].Environmental Pollution,2016,218:664-672.
[13] 秦华鹏,唐女,唐巧玲．蓄水层对绿色屋顶径流削减能力的影响分析[J]．中国给水排水,2016,32(13):132-135.
[14] LI S,QIN H,PENG Y,et al.Modelling the combined effects of runoff reduction and increase in evapotranspiration for green roofs with a storage layer[J].Ecological Engineering,2019,127:302-311.
[15] LIU R,STANFORD R L,DENG Y,Et al.The influence of extensive green roofs on rainwater runoff quality:a field-scale study in southwest China[J].Environmental Science and Pollution Research,2019.
[16] MUCHA S.The effctiveness of green roofs measured by nutrient,total suspended solids and total organic carbon content[D].2016.
[17] 赵瑞华．城市雨水蓄积净化材料[D]．天津：天津大学,2010.
[18] 赵坤．典型城市道路雨水径流污染特征研究[D]．重庆：重庆交通大学,2018.
[19] 罗诗,郑芝波,莫伟钦,等．不同基质种植对黄瓜植株生理及果实品质的影响[J]．亚热带植物科学,2004,33(3):26-28.
Influences of drainage (stroge) layer material on the performance of extensive green roof
Abstract: To investigate the differences of the performances among extensive green roof(EGR)modules using different drainage(storge)layer materials,their effects on rainfall runoff,water quality and plant growth were analyzed.Results showed that the rainfall runoff retention rate of the EGR module with porous fiber cotton was higher than the other two EGR modules,but it needed longer drying period to restore its storage capacity before the next rain.All three EGR modules could effectively decrease the concentration and load of suspended solids(SS),and the EGR module with porous fiber cotton performed best.The chemical oxygen demand(COD)concentration in the outflow of the three EGR modules was higher than normal roof.The COD load of the EGR module with porous fiber cotton was slightly lower than normal roof,and the COD load of the other two EGR modules was higher than normal roof.The EGR module with porous fiber cotton has the highest vegetation coverage and longer green period.
Keywords: Extensive green roof; Drainage(storge)layer; Water quantity; Water quality; Vegetation coverage;
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