Welcome to Educational Solutions

Educational products for high school and college students.


[Lab Experiments] | [Theoretical Calulations] | [Fate and Transport Models]
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Fate and Transport Models...
  • Step Release Into a Stream
  • Pulse Release Into a Stream
  • Step Release Into a Lake
  • Pulse Release Into a Lake
  • Streeter-Phelps Equation / D.O. Sag Curve
  • Step Release Into Groundwater
  • Pulse Release Into Groundwater


The fate and transport models of EnviroLand are the most versatile. We feel that it is important to force the student to make manual calculation prior to using the simulations in EnviroLand. After the student is proficient in these calculatons, we use EnviroLand to study the effects of changing stream channel dimentions, water velocities, flow rates, mass loading, reaction rates, etc. on dispersion (shape of peak or width at half maximum concentration).
The students can see for themselves the effect of physical processes such as advection and dispersion, as well as chemical processes such as reaction rate, on the pollutant transport. This approach significantly increases the number of problems that can be worked in the classroom, but still allows the student to become proficient with manual calculations.


[Lab Experiments] | [Theoretical Calulations] | [Fate and Transport Models]
[About] | [Download] | [Links]


Software provided by: Frank Dunnivant, Elliot Anders, and Dan Danowski - Environmental Chemistry Research Group - Whitman College