Enhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones

The traditional bioretention systems possess a remarkably low nitrogen and phosphorus removal effect. The removal rate fluctuates greatly, and even appears as negative removal of nitrogen and phosphorus. Four simulated bioretention experimental columns with different bilayer media, packing compositi...

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Autores principales:	Ran Yang, Fu Zheng-rong, Ma Man-ying, Liu Xian
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	bioretention nutrients removal saturated zones stormwater runoff Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/70853e21a903409f8b36cb218515c261
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spelling	oai:doaj.org-article:70853e21a903409f8b36cb218515c2612021-11-06T11:26:34ZEnhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones0273-12231996-973210.2166/wst.2021.403https://doaj.org/article/70853e21a903409f8b36cb218515c2612021-10-01T00:00:00Zhttp://wst.iwaponline.com/content/84/8/2079https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The traditional bioretention systems possess a remarkably low nitrogen and phosphorus removal effect. The removal rate fluctuates greatly, and even appears as negative removal of nitrogen and phosphorus. Four simulated bioretention experimental columns with different bilayer media, packing composition and structure were constructed. Based on the traditional fillers, the modified composite fillers with hydroxy-aluminum and modified vermiculite sludge particle (HAVSP) were added. The traditional filler (C1) and the modified composite filler (C2) were added respectively, moreover saturated zones were set up to enhance the effect of nitrogen and phosphorus removal. Removal of nutrients from experimental columns by simulated runoff efficiency was evaluated and compared. In addition, the effect of media depth on phosphorus retention and denitrifying enzyme activity in bioretention columns was also evaluated. The experimental column #2 filled with C2 had the optimum removal effect on TP (93.70%), however, the removal effect of TP by filling C1 experimental columns was insufficient (57.36%). Designed to remove nitrate (NO3−-N) and total nitrogen, the experimental column #4 showed the best performance (83.54% and 92.15%, respectively). In this study, we propose a fold-flow bioretention system by filling HAVSP in combination with saturated zones. The runoff water quality can be effectively improved, and a new bioretention cell configuration can be provided for efficient stormwater treatment. HIGHLIGHTS Proposing a novel bioretention system by installing a fold-flow board and combining with saturated zones.; Filling hydroxy-aluminum vermiculite sludge particle and setting a bilayer filler inside the structure of the bioretention system.; Evaluating the effect of media depth on phosphorus retention and denitrifying enzyme activity in bioretention columns.;Ran YangFu Zheng-rongMa Man-yingLiu XianIWA Publishingarticlebioretentionnutrients removalsaturated zonesstormwater runoffEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 8, Pp 2079-2092 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bioretention nutrients removal saturated zones stormwater runoff Environmental technology. Sanitary engineering TD1-1066
spellingShingle	bioretention nutrients removal saturated zones stormwater runoff Environmental technology. Sanitary engineering TD1-1066 Ran Yang Fu Zheng-rong Ma Man-ying Liu Xian Enhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones
description	The traditional bioretention systems possess a remarkably low nitrogen and phosphorus removal effect. The removal rate fluctuates greatly, and even appears as negative removal of nitrogen and phosphorus. Four simulated bioretention experimental columns with different bilayer media, packing composition and structure were constructed. Based on the traditional fillers, the modified composite fillers with hydroxy-aluminum and modified vermiculite sludge particle (HAVSP) were added. The traditional filler (C1) and the modified composite filler (C2) were added respectively, moreover saturated zones were set up to enhance the effect of nitrogen and phosphorus removal. Removal of nutrients from experimental columns by simulated runoff efficiency was evaluated and compared. In addition, the effect of media depth on phosphorus retention and denitrifying enzyme activity in bioretention columns was also evaluated. The experimental column #2 filled with C2 had the optimum removal effect on TP (93.70%), however, the removal effect of TP by filling C1 experimental columns was insufficient (57.36%). Designed to remove nitrate (NO3−-N) and total nitrogen, the experimental column #4 showed the best performance (83.54% and 92.15%, respectively). In this study, we propose a fold-flow bioretention system by filling HAVSP in combination with saturated zones. The runoff water quality can be effectively improved, and a new bioretention cell configuration can be provided for efficient stormwater treatment. HIGHLIGHTS Proposing a novel bioretention system by installing a fold-flow board and combining with saturated zones.; Filling hydroxy-aluminum vermiculite sludge particle and setting a bilayer filler inside the structure of the bioretention system.; Evaluating the effect of media depth on phosphorus retention and denitrifying enzyme activity in bioretention columns.;
format	article
author	Ran Yang Fu Zheng-rong Ma Man-ying Liu Xian
author_facet	Ran Yang Fu Zheng-rong Ma Man-ying Liu Xian
author_sort	Ran Yang
title	Enhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones
title_short	Enhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones
title_full	Enhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones
title_fullStr	Enhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones
title_full_unstemmed	Enhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones
title_sort	enhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/70853e21a903409f8b36cb218515c261
work_keys_str_mv	AT ranyang enhancingnitrateandphosphorusremovalfromstormwaterinafoldflowbioretentionsystemwithsaturatedzones AT fuzhengrong enhancingnitrateandphosphorusremovalfromstormwaterinafoldflowbioretentionsystemwithsaturatedzones AT mamanying enhancingnitrateandphosphorusremovalfromstormwaterinafoldflowbioretentionsystemwithsaturatedzones AT liuxian enhancingnitrateandphosphorusremovalfromstormwaterinafoldflowbioretentionsystemwithsaturatedzones
_version_	1718443673328287744

Enhancing nitrate and phosphorus removal from stormwater in a fold-flow bioretention system with saturated zones

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