Technical Bulletin No. 0633: A Computerized Non-Linear Least Squares Algorithm for Estimating the Parameters of the Dual First Order Long Term BOD Model

An easy to use, robust computer program to estimate long-term BOD using the dual first order model is described and demonstrated. Prior research conducted by the National Council has examined the suitability of several mathematical models for describing long-term biological oxygen demand of pulp and paper mill effluents. Work published in Technical Bulletin No. 382 concluded that the dual first order model was the best characterization of ultimate BOD data.