An event-based hydrologic simulation model for bioretention systems

Bioretention is a technique applied to treat and reduce runoff generated in urban areas. Although these facilities present complex processes, a simple model with few parameters can be useful for its project. This paper reports an application of Puls method as a bioretention simulation quantitative tool for events. A bioretention device in real scale was installed and monitored using four level sensors and a tipping-bucket rain gauge, both with data loggers. The method was applied in two ways: the facility as a single reservoir; and the facility as two serial reservoirs. Outflows depended on a single infiltration rate in the first case (K) and two infiltration rates in the second case (K1 and K2). The study used 15 events. Results showed suitable values for Nash-Sutcliffe (NS) and determination coefficients (R2) in the calibration phase, especially for bioretention simulated as a single reservoir, with NS values ranging from 0.64 to 0.95. NS ranged from 0.80 to 0.95 in the calibration phase for the device simulated as two serial reservoirs. The validation phase achieved lower NS and R2 than calibration phase. Despite this, the present study suggests the Puls model as a good option for research on bioretention devices modelling.

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“…R 2 varied from 0.80 to 0.95. K med was 26 mm/h, different from the result achieved byRosendo (2013) of 50 mm/h.…”

contrasting

confidence: 78%

“…These thicknesses represent mean values because they changed slowly along the length. Rosendo (2013) and Menezes (2015) detailed the sizing.…”

Section: Studied Areamentioning

confidence: 99%

Puls method for events simulation in a lot scale bioretention device

Ferreira

Neves

Souza

2019

RBRH

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“…As illustrated in Figure 2, the model is based on the following sequence of processes explained using the case area: mathematical models of retention units are included in most of the major software packages for simulating drainage systems (e.g., [41][42][43]), and more detailed stand-alone models have also been developed (e.g., [44,45]). However, for our purpose, the complexity of these models was unnecessary and unwanted.…”

Section: Hydrological Model Of Rainwater Flow Through Retention Unitsmentioning

confidence: 99%

Characteristic Rain Events: A Methodology for Improving the Amenity Value of Stormwater Control Measures

et al. 2017

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Local management of rainwater using stormwater control measures (SCMs) is gaining increased attention as a sustainable alternative and supplement to traditional sewer systems. Besides offering added utility values, many SCMs also offer a great potential for added amenity values. One way of achieving amenity value is to stage the rainwater and thus bring it to the attention of the public. We present here a methodology for creating a selection of rain events that can help bridge between engineering and landscape architecture when dealing with staging of rainwater. The methodology uses quantitative and statistical methods to select Characteristic Rain Events (CREs) for a range of frequent return periods: weekly, bi-weekly, monthly, bi-monthly, and a single rarer event occurring only every 1-10 years. The methodology for selecting CREs is flexible and can be adjusted to any climatic settings; here we show its use for Danish conditions. We illustrate with a case study how CREs can be used in combination with a simple hydrological model to visualize where, how deep and for how long water is visible in a landscape designed to manage rainwater.

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“…Three articles were published in 2015 that investigated the hydraulic performance of bioretention cells (Barbu et al, 2015;Jennings et al, 2015;Roy-Poirier et al, 2015). Jennings et al (2015) outlined an algorithm to assess the hydraulic performance of rain gardens using local meteorological data, and concluded that the effectiveness of rain gardens in Ohio was dominated by infiltration rate.…”

Section: Design For Optimization Studies Related Tomentioning

confidence: 99%

Urban Stormwater Characterization, Control, and Treatment

Vogel

Moore²

2016

Water Environment Research

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The following review presents a synthesis of 181 journal articles published during 2015 that represent progress toward better characterizing, controlling, and treating urban stormwater runoff. The review is structured by general topical areas related to (1) stormwater quality and quantity characterization; (2) engineered stormwater control and treatment practices, including erosion and sediment control, stormwater ponds, constructed stormwater wetlands, bioretention, permeable pavement, greenroofs, and rainwater harvesting systems; and (3) watershed-scale modeling and optimization of stormwater control and treatment practices. Common research themes emerging from this collection of studies include potential to enhance hydrologic and pollutant treatment performance of stormwater practices via media amendments and the use of innovative outlet control structures, as well as development of a more mechanistic understanding of hydrologic and water-quality functions to inform modeling and performance predictions. These studies serve to expand the field's knowledge base and will inform future efforts to further improve stormwater control and treatment at various spatial and temporal scales.

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An event-based hydrologic simulation model for bioretention systems

Cited by 17 publications

References 24 publications

Puls method for events simulation in a lot scale bioretention device

Puls method for events simulation in a lot scale bioretention device

Characteristic Rain Events: A Methodology for Improving the Amenity Value of Stormwater Control Measures

Urban Stormwater Characterization, Control, and Treatment

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