Floating Treatment Wetland influences on the fate of metals in road runoff retention ponds

Borne, Karine; Fassman‐Beck, Elizabeth; Tanner, Chris C.

doi:10.1016/j.watres.2013.09.056

Cited by 70 publications

(30 citation statements)

References 43 publications

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“…The measured pollution removal performance (ER) of the FTW was calculated to be 80% for TSS, 53% for TP, and 17% for TN (Table 2. These removal rates are encouraging when compared to findings of previous stormwater FTW pond studies [11][12][13][14]. The improved removal rates are believed to be the result of the unique experimental design that excluded potential short-circuiting and specifically focused on evaluating the pollution removal performance of the field-scale FTW alone, rather than as part of a stormwater treatment train.…”

Section: Resultssupporting

confidence: 60%

“…Following these early successes, FTWs have since been used for a variety of purposes including treatment of pollution emanating from mine tailings [4][5][6][7], and pollution removal from stormwater [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Juvenile plants are established directly into this floating matrix, and the roots grow into the water column below (Figure 2). Studies undertaken in the United States and New Zealand [10][11][12][13][14][15][16] have found that FTW can provide an effective, low cost, and low maintenance means of treating domestic and agricultural Contemporary artificial FTWs are typically constructed using a combination of woven plastic, organic based matting, and fibreglass [8,10]. Juvenile plants are established directly into this floating matrix, and the roots grow into the water column below (Figure 2…”

Section: Introductionmentioning

confidence: 99%

“…Juvenile plants are established directly into this floating matrix, and the roots grow into the water column below (Figure 2). Studies undertaken in the United States and New Zealand [10][11][12][13][14][15][16] have found that FTW can provide an effective, low cost, and low maintenance means of treating domestic and agricultural Studies undertaken in the United States and New Zealand [10][11][12][13][14][15][16] have found that FTW can provide an effective, low cost, and low maintenance means of treating domestic and agricultural wastewater and stormwater. Tanner et al [10] found that FTW were capable of reducing wastewater TSS by up to 81%, total nitrogen (TN) by up to 34%, and total phosphorus (TP) by up to 19%.…”

Section: Introductionmentioning

confidence: 99%

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Performance Evaluation of a Floating Treatment Wetland in an Urban Catchment

Nichols

Lucke

Drapper³

et al. 2016

Water

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Floating Treatment Wetland (FTW) systems are purpose-built devices designed to replicate the water treatment processes that occur in and around naturally occurring floating vegetated islands. FTWs can be used to improve the water quality of water storage ponds by contributing to water treatment processes through adhesion, filtration, nutrient uptake (direct use by plants), and sequestration. This paper presents the results of a twelve-month investigation into the pollution removal performance of a FTW receiving stormwater runoff from a 7.46 ha urban residential catchment. As anticipated, there was a high degree of variation in FTW treatment performance between individual rainfall events. Overall pollution removal performance was calculated to be 80% for Total Suspended Solids (TSS), 53% for Total Phosphorous (TP), and 17% for Total Nitrogen (TN) for a FTW footprint of 0.14% of the contributing catchment. TSS and TP concentrations were found to be significantly reduced after FTW treatment. The minimum FTW footprint to catchment size ratio required to achieve regulated nutrient removal rates was calculated to be 0.37%. Sum of loads calculations based on flow resulted in pollution load reductions of TSS 76%, TP 55%, and TN 17%. Pollution treatment performance (particularly for TN) was found to be affected by low influent concentrations, and highly-variable inflow concentrations. The study demonstrated that FTWs are an effective treatment solution for the removal of pollution from urban stormwater runoff.

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Section: Resultssupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Juvenile plants are established directly into this floating matrix, and the roots grow into the water column below (Figure 2). Studies undertaken in the United States and New Zealand [10][11][12][13][14][15][16] have found that FTW can provide an effective, low cost, and low maintenance means of treating domestic and agricultural Studies undertaken in the United States and New Zealand [10][11][12][13][14][15][16] have found that FTW can provide an effective, low cost, and low maintenance means of treating domestic and agricultural wastewater and stormwater. Tanner et al [10] found that FTW were capable of reducing wastewater TSS by up to 81%, total nitrogen (TN) by up to 34%, and total phosphorus (TP) by up to 19%.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance Evaluation of a Floating Treatment Wetland in an Urban Catchment

Nichols

Lucke

Drapper³

et al. 2016

Water

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“…Because of the larger peaking factor of CSOs, the existing CSO CWs in the US appear to have high hydraulic loading rates and short hydraulic retention time. Therefore, plant uptake of nutrients might be limited relative to physical removal mechanisms as reported by Borne et al [32] for metal removal from stormwater in floating wetlands. Meanwhile, emergent plants in FWS wetlands and plant roots under floating islands may enhance sedimentation and filtration and provide microorganisms with solid surfaces to carry biofilms.…”

Section: Configuration Of Wetland Cellsmentioning

confidence: 99%

Constructed Wetlands for Treatment of Combined Sewer Overflow in the US: A Review of Design Challenges and Application Status

Tao

Bays²,

Meyer

et al. 2014

Water

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As combined sewer systems and centralized wastewater treatment facilities age, many communities in the world are challenged by management of combined sewer overflow (CSO). Constructed wetlands are considered to be one of the green infrastructure solutions to CSOs in the US. Despite the wide application of constructed wetlands to different types of wastewaters, the stochastic and intermittent nature of CSO presents challenges for design and performance assessment of constructed wetlands. This paper reviews the application status of CSO constructed wetlands in the US, assesses the benefits of CSO constructed wetlands, identifies challenges to designing CSO constructed wetlands, and proposes design considerations. This review finds that constructed wetlands are effective in CSO treatment and relatively less expensive to build than comparable grey infrastructure. Constructed wetlands not only remove pollutants, but also mitigate the event-associated flow regime. The design challenges include incorporating considerations of green infrastructure into permit requirements, determining design capacity for highly variable flows, requiring pretreatment, OPEN ACCESSWater 2014, 6 3363 and needing adaptive design and intensive monitoring. Simultaneous monitoring of flow rate and water quality at both the inflow and outflow of CSO constructed wetlands is required for performance assessment and needed to support design, but is rarely available.

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A novel pilot‐scale tubular bioreactor‐enhanced floating treatment wetland for efficient in situ nitrogen removal from urban landscape water: Long‐term performance and microbial mechanisms

Cui

Yang

Ding

et al. 2019

Water Environment Research

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In order to strengthen in situ nitrogen removal of urban landscape water, a novel pilot-scale tubular bioreactor-enhanced floating treatment wetland (TB-EFTW) was constructed, and the long-term performance and responsible microbial mechanisms were investigated in this study. The results showed that the system could remove 81.5% nitrogen from the landscape water after 240 days' operation. Moreover, the contribution rate of plant absorption to nitrogen was low (8.3%), which indicated that microbial biotransformation rather than plant absorption played a more key role in nitrogen removal in TB-EFTW system. The declining dissolved oxygen (DO) concentration along the axial direction of tubular bioreactor (TB) resulted in the sequential bacterial community of nitrifying, aerobic denitrifying, and anoxic denitrifying bacteria in the front, middle, and final part of TB. High-throughput sequencing results demonstrated that the internal environment of the system realized the coexistence of nitrifying, aerobic denitrifying and anoxic denitrifying process. The reason was mainly because that oxic-anoxic (O-A) areas were formed in sequence along the axial direction of tubular bioreactor. Overall, a unique advantage in nitrogen removal was achieved in TB-EFTW, which could provide important references for in situ treatment of urban landscape water. • Practitioner points• TB-EFTW strengthened nitrogen removal for in situ urban landscape water treatment. • Microbial conversion played a key role in nitrogen removal of the TB-EFTW system. • The unique distribution of oxic-anoxic (O-A) areas was formed in sequence along the TB. • Nitrification, aerobic, and anoxic denitrification were synergistically involved in the TB.• Key words agriculture; biological treatment; nitrogen removal; surface water

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Floating Treatment Wetland influences on the fate of metals in road runoff retention ponds

Cited by 70 publications

References 43 publications

Performance Evaluation of a Floating Treatment Wetland in an Urban Catchment

Performance Evaluation of a Floating Treatment Wetland in an Urban Catchment

Constructed Wetlands for Treatment of Combined Sewer Overflow in the US: A Review of Design Challenges and Application Status

A novel pilot‐scale tubular bioreactor‐enhanced floating treatment wetland for efficient in situ nitrogen removal from urban landscape water: Long‐term performance and microbial mechanisms

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