Express you result in grams. The Boulder, Colorado, wastewater treatment plant enters Boulder Creek just above a USGS flow gaging station. If the flow at the gaging station was 0.494 cms, estimate the flows for the treatment plant and the creek. The Treatment Plant 1.14 Problem Sediment traps are small collecting devices that are suspended in the water column to measure the downward flux of settling solids. After 10 d, you remove the trap and determine that 20 g of organic carbon has collected on its surface.
Solution Consider both integral and differential approaches.
The following table includes calculations for both. This can be tested using a differential approach. A log-log plot gives a slope indicative of the reaction order, and an intercept which yields the reaction rate. A second differential method involves some graphical smoothing. Refer to Chapra s example 2.2 on page 33 for a description as to how this can be done.