Within the Nutrient Options and Parameters frame (Figure 1) settings for many of the basic nutrient parameters may be made. The nutrient parameters have been grouped by nutrient type and can be edited by clicking on the respective button. For example to edit the nitrogen settings , the user would click on the Nitrogen button . These are to edit the nitrogen default settings. If the user implements kinetic zones then those values will be used in place of these values, however, the default values are still displayed in this form. For example, this can mean that the COD decay rate may be different in two places, however, the kinetic zone value will take precedence.
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Figure 1 1. Water Quality Tabtab: Nutrients.
The user may also specify the Sorption Options. The default is "None" and parameters cannot be modified. However, if Total Active Metal (TAM) Based or Cohesive Sediment Based radial buttons are selected, the user may alter these nutrient sorption parameters with the Modify Parameters button.
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