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Subsections
New Substance
This item is only enabled if there is an active scenario,
because a substance must be connected to a scenario.
The substance dialog is raised and you can specify the substance
data.
As GREAT-ER uses the Monte-Carlo method to drive a stochastic simulation,
a distribution can be specified for most of the parameters. Depending on
the selected distribution, various descriptive values have to be entered.
Conversely, switching back from a distribution to a fixed value, GREAT-ER calculates the mean of the former distribution as its first guess.
The substance dialog is separated into seven cards:
You can specify the substance name,
CAS and EINECS number and additional synonyms to ease
identification. The substance name is essential, the other
parameters are optional. It is not possible to leave the substance
dialog with "OK" (i.e. to use the entered data) without specifying a
substance name. The only possibility would be to abort by "Cancel".
For each parameter a comment can be entered. Obviously, none can be
distributed.
General physico-chemical
properties can be edited on this card. More process-specific
physico-chemical parameters are placed on the related cards.
The necessity of declaring partitioning coefficients
depends on the selected model (Section 3.4.1).
The degradation card covers some very specific parameters for
biodegradation and Monod kinetics. See the model description for a
more detailed explanation of parameters.
Depending on the selected models various parameters have to be
entered to describe the substance fate in sewer and the different
treatment plants.
As with sewage treatment removal, more or less detailed
elimination rates have to be entered, depending on the selected
mode for the river submodel
You can specify a default consumption (kg per capita and year)
of the substance assumed for any discharge site in the simulation area.
See Edit Market Data
(Section 3.3.4) to edit more site-specific data.
Cancelling the dialog will cause you to return to the previous state.
Otherwise confirm the new substance by selecting "OK".
The substance is then added to the active scenario.
If the previous substance of the scenario has been modified, a
confirmation dialog will appear.
If there is an open scenario with a substance that has the same ID,
a hint will be prompted.
Next: Open Substance
Up: Substance
Previous: Substance
F. Koormann & J.-O. Wagner, Institute of Environmental Systems Research, University of Osnabrück