Island topographies to reduce short-circuiting in stormwater detention ponds and treatment wetlands

Guzman, Celina Balderas; Cohen, Samantha; Xavier, Manoel Lucas Machado; Swingle, Tyler; Qiu, Waishan; Nepf, Heidi

doi:10.1016/j.ecoleng.2018.02.020

Cited by 16 publications

(10 citation statements)

References 28 publications

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“…The effluent concentration was below 5 and 8 mg/L for TSS and BOD 5 , and higher removal efficiency was achieved for NH 4 -N (95%), NO 3 -N (77%), and phosphorus (DRP 65%) with at least 3-log E. coli removal (Park, Craggs, & Tanner, 2018). Guzman et al (2018) studied design considerations that improve hydraulic performance by reducing short-circuiting in detention pond and treatment wetland and concluded that a design with five rows of islands of decreasing size with distance from inlet would be effective in terms of hydraulic performance. studied the effect of DO on the nitrogen removal performance of single-stage biodegradable polymer-based CWs (PBSCW) while treating ammonia wastewater and reported that TN removal ratios in the PBSCW under limited-aeration and full-aeration phases were 72% and 99%, respectively, at an ammonia nitrogen loading rate of 25 g N/m 3 day.…”

Section: Wetland Design and Operationmentioning

confidence: 94%

Wetlands for wastewater treatment

Ghimire

Nandimandalam

Martinez‐Guerra

et al. 2019

Water Environment Research

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This article presents an update on the research and practical demonstration of wetland treatment technologies for wastewater treatment. Applications of wetlands in wastewater treatment (as an advanced treatment unit or a decentralized system) and stormwater management or treatment for nutrient and pollutant removal (metals, industrial and emerging pollutants including pharmaceutical compounds and pathogens) are highlighted. A summary of studies involving the effects of vegetation, wetland design and operation, and configurations for efficient treatment of various municipal and industrial wastewaters is also included.

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Section: Wetland Design and Operationmentioning

confidence: 94%

Wetlands for wastewater treatment

Ghimire

Nandimandalam

Martinez‐Guerra

et al. 2019

Water Environment Research

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“…Shallow reservoirs are common hydraulic structures. They serve as storage or sedimentation tanks for stormwater management [1][2][3][4][5], and are part of green infrastructures such as constructed wetlands [6][7][8][9]. They are also used as settling basins in irrigation networks [10,11] and for the treatment of waste water [12] or drinking water [13].…”

Section: Context and Objectivementioning

confidence: 99%

What does the volume-averaged water age distribution function reveal about flow fields in rectangular shallow reservoirs?

Dewals,

Archambeau,

Erpicum

et al. 2024

Environ Fluid Mech

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Shallow reservoirs are hydraulic structures widely used for water storage or as sedimentation tanks. Their design and sizing are intricate due to the complex flow fields developing in such structures, hence suitable indicators are needed to evaluate their hydraulic performance. Based on the outcomes of a depth-averaged computational model, we analysed the potential of the distribution function of the volume-averaged water age to unveil in a concise way valuable information on the flow field in rectangular shallow reservoirs. Ten different reservoir layouts were examined. In all cases, the shape of the computed distribution function reveals a remarkable amount of information on the flow field in the reservoirs. The distribution functions exhibit a sequence of steps, followed by an exponential decay, which may be related to fast and slow pathways travelled by water particles along their routes across the reservoirs. As such, the distribution function of the volume-averaged water age was found to provide valuable information for assessing the hydraulic performance of shallow reservoirs, while achieving an effective reduction in the problem dimensionality.

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“…A hydraulic efficiency value larger than 0.5 originated from a hydraulic modeling study of 13 hypothetical ponds to represent the influence of pond shape, inlet/outlet locations and types (Persson et al., 1999) and was adopted in Australian runoff quality research (Wong, 2006). Recently, laboratory simulations have been used to optimizing hydraulic efficiency for combinations of different lake shapes, inflow configurations, islands and obstacles (Guzman, Cohen, et al., 2018; Guzman, Nepf, et al., 2018).…”

Section: Habs and Global Constructed Waterbody Guidelinesmentioning

confidence: 99%

The Effectiveness of Global Constructed Shallow Waterbody Design Guidelines to Limit Harmful Algal Blooms

Liu

Johnson

Tamburic

et al. 2021

Water Resources Research

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Constructed shallow waterbodies are often designed and built to limit harmful algal blooms in urban regions. Efforts to reduce algal bloom occurrence in these waterbodies have largely focused on waterbody design, catchment criteria and onsite engineering options. However, many constructed shallow waterbodies that comply with design guidelines still experience harmful algal blooms. Identifying the knowledge gaps in current guidelines and examining their recommended design criteria can improve their effectiveness to reduce algal outbreaks. Here, we reviewed 66 global guidelines and identified common design criteria. The use of a ‘one size fits all' empirical approach and dated literature are common issues associated with the design criteria recommended. Further, only approximately one third of the guidelines that were analyzed directly mentioned harmful algal bloom‐related design criteria. To test the validity of these design values in a real‐world setting, the suitability of design factors in limiting harmful algal blooms was assessed by analyzing 222 shallow waterbodies monitored over a 9 year period in southeastern Australia. The site analysis indicated that macrophyte area to surface area ratio, shoreline development index, and fetch are the three most influential single design factors associated with harmful algal bloom reduction. The analyses highlighted the ineffectiveness of the existing design criteria globally, with blooms occurring even though some waterbodies were designed in accordance with recommended parameters. The analysis suggested that understanding interactions between multiple design factors may be a useful approach, for example, when considering the macrophyte area to surface area ratio in combination with the shoreline development index.

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Island topographies to reduce short-circuiting in stormwater detention ponds and treatment wetlands

Cited by 16 publications

References 28 publications

Wetlands for wastewater treatment

Wetlands for wastewater treatment

What does the volume-averaged water age distribution function reveal about flow fields in rectangular shallow reservoirs?

The Effectiveness of Global Constructed Shallow Waterbody Design Guidelines to Limit Harmful Algal Blooms

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