Steady is a computer program that provides a generalized model to represent wastewater treatment plants. The model assumes steady-state conditions for the influents to a given plant and characterizes wastewater with the traditional environmental engineering parameters (BOD5, TSS, VSS, TKN, and NH3-N). Once a valid plant layout has been created, Steady can calculate the plant-wide mass balance and the general dimensions of the unit processes involved. Also, once the mass balance has been calculated, Steady can display the calculations performed for each unit process.
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