1. General Model Information

Name: Water Oxygenation Deoxygenation Assessment Model

Acronym: WODA

Main medium: aquatic
Main subject: biogeochemistry, hydrology
Organization level: ecosystem
Type of model: 1D, ordinary differential equations
Main application:
Keywords: river, water quality, oxygen dynamics, bethic algae, transport, first order kinetics

Contact:

Author(s):

Abstract:

Water Oxygenation Deoxygenation Assessment (WODA) (="Water" in Polish) has been produced by collaboration between Italy and Poland. It is an attempt to build a mathematical model, of water quality in rivers, aiming to describe the most important biochemical occurance by the smallest amount of data.

It is a modelling support system dedicated to problems of water quality in rivers.

The system can:

Estimate the influence on the environment of pollutants, producing a simulation and graphical presentations.
Estimate the constant speeds of any reactions, which are characteristic of a rivers self cleaning.
Estimate the size of the polluted area.
Keep a constant database of all information.

This package is compatible with most computers. It could be used when a multivariable analysis is necessary on a river section. It can help in the choice of an admissible level of pollution simulating the effects of alternative actions, treatment plants, various sources of pollution and varying locations of foundation aerators. Main assumptions

1D System
Longitudinal dispersion approximately 0
Steady state hydraulic conditions
Steady state of mass and benthos exchange
Steady change of toxic substance.
Oxygen conditions

Required data

Starting time
Starting time of observation
Time of sunrise and sunset
First and last point section of the river
Initial conditions
- Discharge
- Temperature
- Concentration BZT, TR
Inflows
- Points
- Distribution
Model of the unknown surface charges BZT
Surface charge point of inflows of O²
Measurements
- Temperature
- Concentration BZT, TR

II. Technical Information

II.1 Executables:

Operating System(s):

II.2 Source-code:

Programming Language(s):

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

V. Further information in the World-Wide-Web

VI. Additional remarks

Last review of this document by: T. Gabele : Dec 7 1997
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:52 CEST 2002