Improving Urban Stormwater Runoff Quality by Nutrient Removal through Floating Treatment Wetlands and Vegetation Harvest

被引：100
|
作者：
Xu, Bing [1 ,2 ]
Wang, Xue [3 ]
Liu, Jia [4 ]
Wu, Jiaqiang [5 ]
Zhao, Yongjun [5 ]
Cao, Weixing [5 ]
机构：
[1] Shandong Jianzhu Univ, Sch Municipal & Environm Engn, Jinan 250101, Shandong, Peoples R China
[2] Coinnovat Ctr Green Bldg, Jinan 250101, Shandong, Peoples R China
[3] Shanghai Publ Green Space Construct Affairs Ctr, Shanghai 201100, Peoples R China
[4] Jinan Water Grp Co Ltd, Jinan 250012, Shandong, Peoples R China
[5] Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing 314001, Peoples R China
来源：
SCIENTIFIC REPORTS | 2017年 / 7卷
关键词：
NITROGEN REMOVAL; CONSTRUCTED WETLANDS; POLLUTED RIVER; WASTE-WATER; RETENTION; REMEDIATION; PHOSPHORUS; CATCHMENT; GROWTH; FATE;
D O I：
10.1038/s41598-017-07439-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Two floating treatment wetlands (FTWs) in experimental tanks were compared in terms of their effectiveness on removing nutrients. The results showed that the FTWs were dominated by emergent wetland plants and were constructed to remove nutrients from simulated urban stormwater. Iris pseudacorus and Thalia dealbata wetland systems were effective in reducing the nutrient. T. dealbata FTWs showed higher nutrient removal performance than I. pseudacorus FTWs. Nitrogen (N) and phosphorous (P) removal rates in water by T. dealbata FTWs were 3.95 +/- 0.19 and 0.15 +/- 0.01 g/m(2)/day, respectively. For I. pseudacorus FTWs, the TN and TP removal rates were 3.07 +/- 0.15 and 0.14 +/- 0.01 g/m(2)/day, respectively. The maximum absolute growth rate for T. dealbata corresponded directly with the maximum mean nutrient removal efficiency during the 5th stage. At harvest, N and P uptak of T. dealbata was 23.354 +/- 1.366 g and 1.489 +/- 0.077 g per plant, respectively, approximate twice as high as by I. pseudacorus.
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页数：11
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