PC-Progress - Version Hydrus- Wetland -2 -Add-On Module Software
Constructed Wetlands (CWs) are engineered water treatment systems that optimize the treatment processes found in natural environments. CWs are popular systems which efficiently treat different kinds of polluted water and are therefore sustainable, environmentally friendly solutions. A large number of physical, chemical and biological processes are simultaneously active and mutually influence each other. As complex systems, CWs have been considered "black boxes" for a long time. During the last few years, two-dimensional models of different complexities have been developed for describing processes in SubSurface Flow (SSF) CWs.
Version 2 of the HYDRUS wetland module includes two biokinetic model formulations for simulating reactions in two-dimensional constructed wetlands:
- the CW2D module (Langergraber and Šimunek, 2005), and/or
- the CWM1 (Constructed Wetland Model #1) biokinetic model (Langergraber et al., 2009).
In CW2D, aerobic and anoxic transformation and degradation processes for organic matter, nitrogen and phosphorus are described, whereas in CWM1, aerobic, anoxic and anaerobic processes for organic matter, nitrogen and sulphur are considered. CWM1 has been developed with the main goal to provide a widely accepted model formulation for biochemical transformation and degradation processes in SSF CWs.
The HYDRUS wetland module is the only implementation of a CW model that is currently publicly available. For detailed information about the CW2D and CWM1 biokinetic models, the reader is referred to the original papers, i.e., Langergraber and Šimunek (2005) and Langergraber et al. (2009), respectively.
Tutorials
In this file (Wetlands Tutorials) you can find tutorials that show how to use the HYDRUS Wetland Module for simulating vertical flow (VF) and horizontal flow (HF) constructed wetlands CWs). The following tutorials are described in the step-by-step fashion:
- Water Flow in a Vertical Flow Constructed Wetland (uses the standard HYDRUS water flow module).
- Reactive Transport in a Vertical Flow Constructed Wetland (uses the HYDRUS Wetland Module, the CW2D Biokinetic Model).
- Water Flow and Reactive Transport in a Horizontal Flow Constructed Wetland (uses the HYDRUS Wetland Module, the CWM1 Biokinetic Model).