Related Experiment Video
Updated: Dec 25, 2025
08:24
Mesocosm-Scale Constructed Wetland Design for Wastewater Treatment
Published on: May 2, 2025
789
SURFWET: A biokinetic model for surface flow constructed wetlands
David G Aragones1, David Sanchez-Ramos2, Gabriel F Calvo1
1Department of Mathematics, School of Civil Engineering, Universidad de Castilla-La Mancha, Av. Camilo Jose Cela s/n, 13071 Ciudad Real, Spain.
The Science of the Total Environment
|April 2, 2020
Summary
A new biokinetic model, SURFWET, enhances understanding and design of constructed wetlands for wastewater treatment. It highlights dissolved oxygen
Area of Science:
- Environmental Biotechnology
- Wastewater Engineering
- Ecological Modeling
Background:
- Constructed wetlands offer advantages over conventional wastewater treatment systems.
- Existing empirical methods for wetland design can be complemented by theoretical models.
- Understanding the complex interplay of biological and physical processes is crucial for effective wastewater treatment.
Purpose of the Study:
- To present a novel biokinetic model (SURFWET) for surface flow constructed wetlands.
- To improve the theoretical understanding and practical design of constructed wetlands.
- To simulate pollutant removal processes, considering key environmental factors.
Main Methods:
- Development of the SURFWET biokinetic model for surface flow constructed wetlands.
- Incorporation of physical and biochemical processes: organic matter, nitrogen, phosphorus, and suspended solids removal.
- Modeling the interaction of bacteria, macrophytes, and phytoplankton, with variable water volume and dissolved oxygen dynamics.
Main Results:
- The SURFWET model demonstrates robustness through a 12-year simulation.
- Simulations reveal the characteristic seasonality of constructed wetland performance.
- Dissolved oxygen is identified as a critical limiting factor for numerous biochemical processes in wetlands.
Conclusions:
- The SURFWET model provides a valuable tool for both theoretical insight and practical design of constructed wetlands.
- Accurate modeling of dissolved oxygen dynamics is essential for optimizing wetland treatment efficiency.
- This biokinetic approach enhances the scientific basis for constructed wetland technology.
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