A simple approach for finding ultimate BOD (L) involved daily measurements of BoDe A straight line is fitted to a plot of BOD VS BOD on a graph paper sheet and the intersection point of that line with a Line dracon through the origin caith Slope = | Ps then found. That intersection point occurs where is that is, it is the paint BODD BOD cohere BoD is no longer changing, hence it is ultimate BOD CL) Determine ultimale. BOD (L) and reaction rate Constant kcdaj! of waste cesing the graphical procedure. No surpr (day) o t BOD O cmg/L) 1 2 3 4 5 6 7 8 9 10 65107 138 138 178/ 190 200 205 210 212