FITOVERT: A dynamic numerical model of subsurface vertical flow constructed wetlands

Giraldi, David; Vitturi, Mattia de’ Michieli; Iannelli, Renato

doi:10.1016/j.envsoft.2009.05.007

Cited by 68 publications

(38 citation statements)

References 57 publications

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“…According to these criteria, six models are selected for review: PHWAT (Brovelli et al 2007(Brovelli et al , 2009a, FITOVERT (Giraldi et al 2009(Giraldi et al , 2010, HYDRUS-2D-CW2D (Langergraber and Š imůnek 2005), HYDRUS-2D-CWM1 (Langergraber and Š imůnek 2012), CWM1-RETRASO (Llorens et al 2011a, b), BIO_PORE (Samsó and García 2013a, b) and AQUASIM-CWM1 (Mburu et al 2012). …”

Section: Model Selectionmentioning

confidence: 99%

“…Indeed, a general search for the words "constructed wetland model" on common databases of scientific papers brings a limitless number of publications on this topic. Among them, a very general distinction can be made: those focusing on simulation of the hydraulics (Dittmer et al 2005;Fan et al 2008;Galvão et al 2010;Korkusuz et al 2007;Kotti et al 2013), the hydrodynamics and clogging (or any of them individually) Giraldi et al 2009Giraldi et al , 2010Hua et al 2013;Knowles and Davies 2011;Suliman et al 2006) and those focusing on the removal of a specific pollutant or a set of pollutants (which generally also include hydraulic and hydrodynamic models of diverse complexity). Among the latter, the most commonly targeted pollutants are organic compounds (Akratos et al 2008;Henrichs et al 2007;Liolios et al 2012;Toscano et al 2009), nitrogen (Akratos et al 2009;Henrichs et al 2009;Mayo and Bigambo 2005;McBride and Tanner 2000;Meyer et al 2006Meyer et al , 2011Morvannou et al 2013;Moutsopoulos et al 2011;Toscano et al 2009), sulphur (Lloyd et al 2004), phosphorous (Hafner and Jewell 2006), heavy metals and mine drainage (Goulet 2001;Lee and Scholz 2006;Mitsch and Wise 1998), arsenic , pesticides (Krone-Davis et al 2013) and emerging pollutants (Hijosa-Valsero et al 2011).…”

Section: Model Selectionmentioning

confidence: 99%

“…FITOVERT (Giraldi et al 2009(Giraldi et al , 2010) is a 1D code developed in MATLAB® and expressly designed to simulate subsurface VF CWs. This software is able to describe the water flow through unsaturated porous media as well as evapotranspiration and surface ponding.…”

Section: Fitovertmentioning

confidence: 99%

See 2 more Smart Citations

Subsurface Flow Constructed Wetland Models: Review and Prospects

Samsó

Meyer²,

García

2014

The Role of Natural and Constructed Wetlands in Nutrient Cycling and Retention on the Landscape

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Numerical models are recognized nowadays as a powerful tool to increase the understanding of the internals of constructed wetlands and to help improve their design. Over the last decade many models have been developed, and many simulation studies have been published. Despite diversity is generally a positive thing, having so many different models can be confusing for potential users and may also hinder further development of the existing ones. The aim of this paper is to summarize the state of the art of this discipline, focussing the attention on the most feature-rich process-based models for constructed wetlands for urban wastewater treatment. Their description is combined with a feature comparison in a tabular format to facilitate the selection of one or another based on the specific needs of the potential user. Moreover, a discussion is made regarding the advantages of each reviewed model regarding features, licencing and expected evolution of each of them. Later in the document, we describe the essential phenomena, parameters and processes that we believe that future generation of constructed wetlands models should incorporate, to guide further research on this discipline. Although this paper is focused on models used in academic circles, a model developed to optimize the design of combined sewer overflow wetlands is presented as an example of the potential of design-focused wetlands. At the end of the paper we provide an overview of the past, present and future of constructed wetlands models and analyse were we stand and which is the way to go and the main goals in the near future.

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Section: Model Selectionmentioning

confidence: 99%

Section: Model Selectionmentioning

confidence: 99%

See 1 more Smart Citation

Subsurface Flow Constructed Wetland Models: Review and Prospects

Samsó

Meyer²,

García

2014

The Role of Natural and Constructed Wetlands in Nutrient Cycling and Retention on the Landscape

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“…However, detailed understanding of CWs functioning is desirable because physical, chemical and biological processes occur in parallel and influence each other in CWs. In recent years, applications of dynamic compartmental models in CWs have shown promising results to help the understanding of the treatment processes (Brasil et al 2007;Langergraber 2008;Pimpan & Jindal 2009;Giraldi et al 2010). Among the dynamic compartmental models, STELLA (structural thinking experiential learning laboratory with animation) is becoming a popular tool in CWs since it allows for a process-based analysis to understand the treatment behaviour ).…”

Section: Introductionmentioning

confidence: 99%

Process-based modelling of phosphorus removal in a novel constructed wetland system using dewatered alum-sludge as substrate

Kumar

Zhao

Babatunde

2011

Water Science and Technology

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A process-based model that can evaluate the transport and the fate of phosphorus (P) in agricultural wastewater was developed for a novel 4-stage dewatered alum sludge cakes (DASC) based constructed wetlands (CWs) system using STELLA software (version 9.1.4). The model considered adsorption, plant and microbial uptakes as the major forms of P involved in the transformation chains. The results were obtained by experimental procedure through laboratory measurement, from literature and/or calibration. The observed effluent P concentration in the CWs ranged from 3.62 to 8.50 mg/L (stage 1), 2.00 to 4.45 mg/L (stage 2), 1.39 to 3.76 mg/L (stage 3) and 0.52 to 2.36 mg/L (stage 4) whereas the simulated values ranged from 2.12 to 10.99 mg/L (stage 1), 1.32 to 5.65mg/L (stage 2), 0.84 to 3.64 mg/L (stage 3) and 0.53 to 2.25mg/L (stage 4), respectively. The simulated and observed values of P removal in CWs system were in good agreement. A mass balance analysis was performed for all the major processes which resulted in a major pathway of P removal through adsorption (64-75%, 58-66%, 57-63% and 49-58%) followed by plant uptake (7-11%, 8-14%, 14-17% and 9-19%) and microbial uptake (3-7%, 3-5%, 9-12% and 7-12%) for stage 1, stage 2, stage 3 and stage 4, respectively. Thus the mathematical model developed in this study could be used to explain the removal processes and simulate the fate of P in the DASC-based CWs system.

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“…Hence they are not much suitable for designing the CWs. Further in the line of increasing complexity of CWs models, FITOVERT (Giraldi et al 2010), HYDRUS 2D/3D (Simunek et al 2008), PHWAT ) have managed to tackle the variably saturated hydrodynamics of filter media and also included the biological models for determining the fate of pollutants. However these models are not available as open source software.…”

Section: Introductionmentioning

confidence: 99%

Modeling of subsurface horizontal flow constructed wetlands using OpenFOAM®

Kadaverugu

2016

Model. Earth Syst. Environ.

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Natural purification of pollutants is one of the major ecosystem services provided by wetlands. The phenomenon of natural treatment is exploited by constructing artificial wetlands for the treatment of domestic wastewater. Various wetland models developed in the recent past range from simplistic regression analysis to highly complex deterministic systems. However, these models doesn't suit to the moderate requirements of environmental practitioners for designing appropriate wetland systems. The present model simulates the dynamic behavior of sub-surface horizontal flow wetland systems by considering the non-linear hydrodynamics and pollutant transport, developed in an open source computational fluid dynamics environment-OpenFOAM Ò . The non-linear movement of wastewater in porous media is coupled with the advectiondispersion-decay multi-physics phenomenon of pollutant with temperature dependent rate kinetics. Sensitivity analysis of the model showed that, van Genuchten's filter media shape parameters a, n, and decay constant k influences the treatment efficiency of wetlands. Further, the model is useful in visualizing the spatio-temporal profiles of pollutants and hydrodynamics which eventually guide the environmental practitioners in better design of treatment wetland systems.

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FITOVERT: A dynamic numerical model of subsurface vertical flow constructed wetlands

Cited by 68 publications

References 57 publications

Subsurface Flow Constructed Wetland Models: Review and Prospects

Subsurface Flow Constructed Wetland Models: Review and Prospects

Process-based modelling of phosphorus removal in a novel constructed wetland system using dewatered alum-sludge as substrate

Modeling of subsurface horizontal flow constructed wetlands using OpenFOAM®

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