Annual variation patterns of the effluent water quality from a green roof and the overall impacts of its structure.
作者： Hongxiang Chai , Yue Tang , Xiaojie Su , Weijie Wang , Hao Lu
DOI: 10.1007/S11356-018-3039-2
关键词:
摘要: To explore the optimal combination of vegetation type, substrate and thickness in a green roof interannual variation patterns runoff quality, eight units were constructed Shenzhen, China. Runoff quality was monitored for 3 years (24 rainfall events). The event mean concentrations (EMC) used to evaluate as well annual pollutant load. An orthogonal L8(24) experiment designed verify significance different factors. level significant factors selected determine design roof. Ophiopogon japonicus. modified perlite, while 200 mm. A three-year analysis performed on It found that each index is different. SS, COD, NH4+-N decreased with years. concentration NO3−-N increased over time, TP remained stable. TN had certain volatility no variation. Overall, improves time. roof’s third year including 11 events monitored. Results showed effluent from lower than precipitation. average NH4+-N, TN, respectively by 37.85%, 28.89%, 30.25%, 14.52%, 12.93%, but 69.91% comparing traditional
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