Least Squares Estimates of BOD Parameters

by Thomas O. Barnwell, Jr., (A.M.ASCE),

Serial Information: Journal of the Environmental Engineering Division, 1980, Vol. 106, Issue 6, Pg. 1197-1202

Document Type: Journal Paper


In stream water quality surveys and in operational studies of sewage treatment plants, long-term biochemical oxygen demand (BOD) tests are often conducted. The purpose of these tests is to find the ultimate oxygen demand of waste and the first-order rate coefficient for the BOD reaction. This information is mandatory if a water quality model is to be used. This paper presents a technique for finding the least squares estimated for the ultimate BOD and rate coefficient without resorting to complicated computer algorithms or subjective graphical methods.

Subject Headings: Water quality | Least squares method | Parameters (statistics) | Water treatment plants | Oxygen demand | Rivers and streams | Water demand | Hydrographic surveys

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