Giving waterbodies the treatment they need: A critical review of the application of constructed floating wetlands

Bi, Ran; Zhou, Chongyu; Jia, Yongfeng; Wang, Shaofeng; Li, Ping; Reichwaldt, Elke S.; Liu, Wenhua

doi:10.1016/j.jenvman.2019.02.064

Cited by 102 publications

(40 citation statements)

References 122 publications

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“…Regarding the CEC, plant-associated NBS have been reported to be crucial for the removal of different CEC (Carvalho et al 2014;Zhang et al 2016;Ilyas & van Hullebusch 2019), which can favour the solution of creating more 'green' in the cities. Therefore, the key removal pathways are the uptake by plants (e.g., carbamazepine), microbial degradation (e.g., ibuprofen, salicylic acid, galaxolide), adsorption and subsequent sedimentation (e.g., triclosan, tetracycline) and photodegradation (e.g., ketoprofen, naproxen, triclosan, diclofenac) (Bi et al 2019).…”

Section: Urban Water Pollution Control: Constructed Wetlandsmentioning

confidence: 99%

A review of nature-based solutions for urban water management in European circular cities: a critical assessment based on case studies and literature

et al. 2020

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Nature-based solutions (NBS) can protect, manage and restore natural or modified ecosystems. They are a multidisciplinary, integrated approach to address societal challenges and some natural hazards effectively and adaptively, simultaneously providing human well-being and biodiversity benefits. NBS applications can be easily noticed in circular cities, establishing an urban system that is regenerative and accessible. This paper aims to offer a review on NBS for urban water management from the literature and some relevant projects running within the COST Action ‘Implementing nature-based solutions for creating a resourceful circular city’. The method used in the study is based on a detailed tracking of specific keywords in the literature using Google Scholar, ResearchGate, Academia.edu, ScienceDirect and Scopus. Based on this review, three main applications were identified: (i) flood and drought protection; (ii) the water-food-energy nexus; and (iii) water purification. The paper shows that NBS provide additional benefits, such as improving water quality, increasing biodiversity, obtaining social co-benefits, improving urban microclimate, and the reduction of energy consumption by improving indoor climate. The paper concludes that a systemic change to NBS should be given a higher priority and be preferred over conventional water infrastructure.

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Section: Urban Water Pollution Control: Constructed Wetlandsmentioning

confidence: 99%

A review of nature-based solutions for urban water management in European circular cities: a critical assessment based on case studies and literature

et al. 2020

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“…In addition to the removal of nutrients via the CFW plants, nutrients may also be removed via numerous chemical, physical, and biological processes [5]. Due to the numerous and unquantifiable potential nutrient removal pathways in the WSP system, a mass balance was not completed for the system over the duration of the study, and therefore, the portion of pollutants removed from the system apart from plant uptake was not able to be accurately estimated.…”

Section: Nutrient Accumulationmentioning

confidence: 99%

“…The roots of the CFW plants grow into the water column below the floating structure, where they have access to nutrients required for growth, similar to a hydroponic system. The roots also provide substantial surface area for the growth of microbial biofilm [4], which is a matrix of diverse microbes adhered to the plant roots and other microbes by extracellular polymeric substance [5]. The roots and biofilm within the water column allow nutrients to be removed from the water column via various processes, including direct uptake and assimilation into plant tissues [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Using Constructed Floating Wetlands to Remove Nutrients from a Waste Stabilization Pond

Huth¹,

Walker

Kulkarni³

et al. 2021

Water

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This study reports the biomass accumulation, plant nutrient concentration, and nutrient uptake rates of plants in a constructed floating wetland (CFW) installed for a sewage treatment application in Australia. Plant biomass accumulation was estimated based on field samplings throughout the duration of the study. Analysis of samples of each plant species was also completed to estimate the mean plant tissue nutrient content. The plant biomass accumulation estimate and the mean plant tissue nutrient concentration were then used to estimate the total nutrient uptake for each species. Each of the species were found to differ in biomass accumulation and plant tissue nutrient concentration and the distribution of biomass and nutrients between the shoots and roots. The nutrient uptake rates varied between the species, with B. articulata having the greatest nutrient uptake rates (shoots: N, 104 ± 31.5 g/m2, P, 12.9 ± 3.87 g/m2; roots: N, 23.9 ± 7.23 g/m2, P, 5.54 ± 1.67 g/m2). Harvesting of the four CFW islands after 375 days of growth removed an estimated 23.2 kg of N and 2.97 kg of P. The results of this study indicate that the use of CFWs with carefully selected plant species can successfully remove significant amounts of nutrients from domestic wastewater.

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“…Both reviews focused on field‐scale applications of FTWs. Bi et al (2019) provided a broad overview of pollutant removal mechanisms and reported removal rates for a wide variety of compounds, and conclude that additional work is needed to understand how treatment efficiencies and other ecosystem effects mediated by FTWs may respond to changes in climate and pollutant delivery. Lucke, Walker, and Beecham (2019) presented a set of recommendations to improve robustness of experimental designs employed for monitoring the performance of FTW stormwater studies based on a review of eight existing field studies.…”

Section: Constructed Stormwater Wetlandsmentioning

confidence: 99%

Urban stormwater characterization, control, and treatment

Rodak

Jayakaran

Moore

et al. 2020

Water Environment Research

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This review summarizes over 280 studies published in 2019 related to the characterization, control, and management of urban stormwater runoff. A summary of quantity and quality concerns is provided in the first section of the review, serving as the foundation for the following sections which focus on the control and treatment of stormwater runoff. Finally, the impact of stormwater control devices at the watershed scale is discussed. Each section provides a self-contained overview of the 2019 literature, common themes, and future work. Several themes emerged from the 2019 literature including exploration of substrate amendments for improved water quality effluent from stormwater controls, the continued study of the role of vegetation in green infrastructure practices, and a call to action for the development of new models which generate reliable, computationally efficient results under the physical, chemical, biological, and social complexity of stormwater management. © 2020 Water Environment Federation • Practitioner points • Over 280 studies were published in 2019 related to the characterization, control, and treatment of urban stormwater. • Studies on bioretention and general stormwater characteristics represented the two most common subtopics in 2019. • Trends in 2019 included novel substrate amendments, studies on the role of vegetation, and advancements in computational models.

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Giving waterbodies the treatment they need: A critical review of the application of constructed floating wetlands

Cited by 102 publications

References 122 publications

A review of nature-based solutions for urban water management in European circular cities: a critical assessment based on case studies and literature

A review of nature-based solutions for urban water management in European circular cities: a critical assessment based on case studies and literature

Using Constructed Floating Wetlands to Remove Nutrients from a Waste Stabilization Pond

Urban stormwater characterization, control, and treatment

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