Nutrient removal by different plants in wetland roof systems treating domestic wastewater

Van, Phan Thi Hai; Tin, Nguyen Thanh; Hien, Vo Thi Dieu; Quan, Thai Minh; Bui, Xuan‐Thanh; Hang, Vo Thanh; Tuc, Dinh Quoc; Dân, Nguyễn Phước; Khoa, Lê Văn; Vo, Phu Le; Son, N. T.; Luong, Nguyen Hoang; Kwon, Eugene D.; Park, Chang-Gyu; Jung, Jingyong; Yoon, Injae; Lee, Sijin

doi:10.1080/19443994.2014.915767

Cited by 13 publications

(4 citation statements)

References 12 publications

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“…It was found that wetland roofs can treat municipal wastewater streams to such an extent that the treated water fulfils the requirements of regional wastewater treatment standards. Comparisons of potentially suitable typical regional plants revealed that there were indeed differences in the treatment performance and efficiency of nutrient removal for the species investigated [16].…”

Section: Municipal Wastewatermentioning

confidence: 94%

“…To prevent clogging and blockages within the wetland roof and pump, gravel is often employed at each end of the wetland roof construction [16]. Additionally, a free hanging metal strainer with small perforations can be integrated onto the suction side of a sump pump to prevent blockages from coarse particles and suction of rooftop sediments [12].…”

Section: Substrata Considerationsmentioning

confidence: 99%

“…Upon installation, vegetative mats can adapt to wetland roof conditions via irrigation using tap water prior to the introduction of wastewater or greywater for water treatment [16,17]. Nutrient removal rates in wetland roof systems treating domestic wastewater have been observed to vary between different plant species [16]. This suggests that wetland roofs may be designed to optimize nutrient and contaminant removal from influent waters.…”

Section: Vegetation Considerationsmentioning

confidence: 99%

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Wetland Roofs as an Attractive Option for Decentralized Water Management and Air Conditioning Enhancement in Growing Cities—A Review

Zehnsdorf

Willebrand

Trabitzsch

et al. 2019

Water

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While constructed wetlands have become established for the decentralized treatment of wastewater and rainwater, wetland roofs have only been built in isolated cases up to now. The historical development of wetland roofs is described here on the basis of a survey of literature and patents, and the increasing interest in this ecotechnology around the world is presented. In particular, this article describes the potential for using wetland roofs and examines experience with applications in decentralized water management in urban environments and for climate regulation in buildings. Wetland roofs are suitable as a green-blue technology for the future—particularly in cities with an acute shortage of unoccupied ground-level sites—for the decentralized treatment of wastewater streams of various origins. Positive “side effects” such as nearly complete stormwater retention and the improvement of climates in buildings and their surroundings, coupled with an increase in biodiversity, make wetland roofs an ideal multi-functional technology for urban areas.

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Section: Municipal Wastewatermentioning

confidence: 94%

Section: Substrata Considerationsmentioning

confidence: 99%

Section: Vegetation Considerationsmentioning

confidence: 99%

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Wetland Roofs as an Attractive Option for Decentralized Water Management and Air Conditioning Enhancement in Growing Cities—A Review

Zehnsdorf

Willebrand

Trabitzsch

et al. 2019

Water

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“…[16,17] This inhibition results in variations in the TN incorporated, ranging from 0.3 to 4.2 kg TN ha ¡1 ¢d ¡1 . [17][18][19] In this sense, seasonality has a proven effect on nitrogen uptake by plants. [20,21] Lee et al [22] reported an increase in biomass coverage from 171.0 m 2 in mid-spring (» 12.0-20.0 C) to 296.4 m 2 in summer (» 23.0-26.0 C).…”

Section: Introductionmentioning

confidence: 99%

Effect of variations in the nitrogen loading rate and seasonality on the operation of a free water surface constructed wetland for treatment of swine wastewater

Reyes

Vidal

2015

Journal of Environmental Science and Health, Part A

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The aim of this study was to evaluate the effects of variations in the nitrogen loading rate (NLR) and seasonality on the operational efficiency of a free-water surface constructed wetland (FWS) and on the processes involved in total nitrogen (TN) removal in treating swine wastewater. The system, which operated for 550 days, consisted of a FWS mesocosm inoculated with Typha angustifolia L., using swine wastewater from a storage lagoon as an influent. After operating with nitrogen loading rates (NLRs) of 2.0 to 30.2 kg TN ha(-1)·d(-1), the FWS reduced total nitrogen (TN) concentration by between 21.6 and 51.0%, achieving maximum removal (48.2 ± 3.0%) when the system operated at a NLR below 15.0 kg TN ha(-1)·d(-1). Moreover, operations over 25.0 kg TN ha(-1)·d(-1) resulted in a 50.6% decrease in the maximum FWS efficiency, which may have been related to increased anoxic conditions (< 0.5 mg O2 L(-1); -169.8 ± 70.3 mV) resulting from the high concentration of organic matter in the system (12.3 ± 10.5 g TCOD L(-1)), which hindered nitrification. Ammonia volatilization is considered the main method to remove TN, with an average value of 14.4 ± 6.5% (3.1-26.2%). Maximum volatilization occurred during the summer (21.5 ± 2.4°C) at an NLR higher than 25 kg TN ha(-1)·d(-1) (26.6%), favored by higher temperatures (17.3-19.7°C), and high NH4(+)-N (>600.0 9 mg NH4(+)-N L(-1)) and pH levels (7.1-7.9). Uptake by plants accounted for 14.9% of the TN removed, with the vegetative peak in summer (height: 105.3 cm; diameter: 2.1 cm) at an NLR of 25.3 ± 0.3 kg TN ha(-1)·d(-1). However, growth decreased to 94.4% at an NLR of over 25.3 ± 0.3 kg TN ha(-1)·d(-1) (>379.9 mg NH4(+)-N L(-1)) in autumn (17.4 ± 2.4°C). This was associated with the period of plant senescence and the effects of ammonium phytotoxicity (379.9-624.2 mg NH4(+)-N L(-1)) and continued to the end of the study with the complete loss of macrophyte species. Finally, 1.5% of the TN removed was incorporated into the sediments where NH4(+)-N is the main form of nitrogen, with an accumulative value of 2.6 g m(-2).

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Guide to Green Roofs for Wastewater Treatment: A Vietnam Perspective

Vo,

Tran,

et al. 2024

Applied Environmental Science and Engineering for a Sustainable Future

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Nutrient removal by different plants in wetland roof systems treating domestic wastewater

Cited by 13 publications

References 12 publications

Wetland Roofs as an Attractive Option for Decentralized Water Management and Air Conditioning Enhancement in Growing Cities—A Review

Wetland Roofs as an Attractive Option for Decentralized Water Management and Air Conditioning Enhancement in Growing Cities—A Review

Effect of variations in the nitrogen loading rate and seasonality on the operation of a free water surface constructed wetland for treatment of swine wastewater

Guide to Green Roofs for Wastewater Treatment: A Vietnam Perspective

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