Polynomial regression model for COD-BOD of dairy effluent

Abstract

Analysis of COD requires very short duration in comparison to the long duration required for BOD analysis. During present investigation 288 samples of treated and untreated dairy effluents have been analysed for COD and BOD. With the help of a computer program ten polynomial regression models have been tested to establish relationship between COD-BOD. Polynomial regression models showed highest value for cubic model (R2 = 0.857) in treated dairy effluent. Therefore, cubic model was found most appropriate to predict the value of BOD on the basis of COD. © 2006 - Kalpana Corporation.