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The USTM models the treatment of each of the contaminants using a series of continuously stirred tank reactors (CSTR), each with a first order kinetic model to describe the exponential decay of the contaminant. Below Figure shows the shape and most appropriate CSTR for various shapes.
k and C* Values
The first order kinetic model adopted in the USTM is described by definition of k, the exponential decay rate constant and C*, the background concentration. Refer to the Universal Stormwater Treatment Model and Appendix G: Selecting Appropriate k and C* Values.
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