NDLI: The influence of the outlet position and substrate on the nitrogen purification of vertical flow constructed wetlands

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The influence of the outlet position and substrate on the nitrogen purification of vertical flow constructed wetlands

Content Provider	Scilit
Author	Xu, Qiaoling Wang, Ping Zhang, Feng Wang, Li
Copyright Year	2020
Description	Journal: Iop Conference Series: Earth and Environmental Science To investigate the influence of outlet location on nitrogen removal in Vertical Flow Wetlands (VFWS), three VFWS, that were, wetland H (planting Pennisetum Hydridum), wetland X (planting Pennisetum purpureum Schum.) and wetland CK (no planting) were constructed. High, medium and low water outlets were set in each wetland, namely A, B and C. The main results were as followed: TN (total nitrogen) removal efficiency of A, B, C in H wetland was 61.3%, 55.4%, 53.2 %, and variance analysis was 100.2, 137.1, 177.8. A, B, C in X wetland was 58.3%, 56.6%, 50.2%, and variance analysis was 55.6, 68.8, 116.4. A, B, C in CK wetland was 53.1%, 51.5%, 50.2%, and variance analysis was 131.9, 188.7, 275.4, respectively. The content of nitrogen and urease activity in the substrate decreased with increasing of substrate depth. These results indicated that planting Pennisetum Hydridum and Pennisetum purpureum Schum. In VFW and appropriately raising outlet position could help improve nitrogen removal efficiency and obtain relatively stable effluent quality, and the upper substrate (0-10 cm) was the main site for nitrogen interception and purification. It can provide theoretical basis for the scientific construction and management of VFW.
Related Links	https://iopscience.iop.org/article/10.1088/1755-1315/601/1/012048/pdf
ISSN	17551307
e-ISSN	17551315
DOI	10.1088/1755-1315/601/1/012048
Journal	Iop Conference Series: Earth and Environmental Science
Issue Number	1
Volume Number	601
Language	English
Publisher	IOP Publishing
Publisher Date	2020-11-01
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Earth and Environmental Science Water Science and Technology Nitrogen Removal
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Physics and Astronomy Environmental Science

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