Related Experiment Video
Updated: Feb 22, 2026

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
Published on: May 15, 2017
Non-equilibrium model for solute transport in differently designed biofilters targeting agricultural drainage water
Lorenzo Pugliese1, Jacob Bruun2, Charlotte Kjaergaard1
1Department of Agroecology, Aarhus University, Blichers Allé 20, Tjele 8830, Denmark
Abstract:
Biogeochemical processes in subsurface flow constructed wetlands are influenced by flow direction, degree of saturation and influent loading position. This study presents a simulation tool, which aims to predict the performance of the unit and improve the design. The model was developed using the HYDRUS program, calibrated and verified on previously measured bromide (Br-) pulse tracer tests. Three different hydraulic designs (Horizontal (HF), Vertical upward (VF-up), Vertical downward (VF-down) and two different flow rates: Low (L), and High (H)) were investigated. The model simulated well the Br- transport behaviour and the results underline the importance of the hydraulic design. Calibrated model parameters (longitudinal dispersivity, immobile liquid phase, mass transfer coefficient) showed a common trend for all the designs, for increasing flow rates within the investigated range. The VF-down performed best, i.e. had the highest hydraulic retention time.
More Related Videos
06:26Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events
Published on: November 7, 2017
12:32Combining Fluidic Devices with Microscopy and Flow Cytometry to Study Microbial Transport in Porous Media Across Spatial Scales
Published on: November 25, 2020
Related Concept Videos
Bioremediation
Physiological Pharmacokinetic Models: Blood Flow-Limited Versus Diffusion-Limited Models
Water and Mineral Acquisition
Design Example: Creating a Hydraulic Model of a Dam Spillway
Environmental Applications of Microorganisms