Analysis of DO sag for Multiple Point Sources

Abstract

The classical model of Streeter and Phelps for the Dissolved Oxygen (DO) is of limited practical importance as itis unable to address the situation when partially treated/untreated waste is discharged in a river through multiplepoints scattered along the river. The Streeter and Phelps model is modified to take into account additional factorslike settleable Biochemical Oxygen Demand (BOD) and Dispersion. The presented model addresses a practicalsituation where the waste is discharged in a river through multiple point sources that increases the complexity ofcomputation in predicting DO conditions in river. The presented model is applied on a real field data collectedfor the river “Yamuna” along Delhi (Capital of India).Keywords: Mathematical Model, BOD, Water Pollution, MATLAB programming.