Second Order Equation for BOD

by James C. Young,
John W. Clark,

Serial Information: Journal of the Sanitary Engineering Division, 1965, Vol. 91, Issue 1, Pg. 43-58

Document Type: Journal Paper


The first order chemical reaction for BOD is examined. A second order chemical reaction equation for BOD in the form yt = t/a + b t is presented and a solution outlined. These equations are applied to experimental data. The results show that a second order equation that can be solved directly by least squares analysis can be applied to BOD data without loss of precision. Raising the test temperature from 20○C to 35○C significantly increases the precision of calculating BOD constants.

Subject Headings: Chemicals | Least squares method | Temperature effects

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