This 2024 feature allows users to calculate concentrations of disinfectant byproducts (DBPs) within a regular KYPipe Water Quality model.
First, select the analysis type, Chemical Concentration or Water Age, as shown below:
At the bottom of the Water Quality Menu, the image below shows how to enter the coefficients and exponents for the DBP regression equation.* Three pre-set options are available: Linear Defaults, Non-Linear Defaults, and Non-Linear Defaults2. Use the presets by clicking the appropriate button on the right:
In both cases, DBP = f(X), where X is either the Chlorine Demand or the Water Age:
Additionally, for disinfection chemical supply sources such as tanks and reservoirs, the user inputs the initial disinfectant chemical concentration:
For other point sources (i.e., other nodes besides tanks and reservoirs), users can specify one of the following methods, which are also described in terms of disinfectant (chlorine) levels:
For any of the above sources of chlorine (tanks, reservoirs, and other point sources), the software will accommodate pattern data that has the potential to alter source concentrations.
*DBP analysis relies upon work found in: Gautam, Yogesh, “PREDICTION OF CHLORINE AND DISINFECTION BYPRODUCT CONCENTRATION IN WATER DISTRIBUTION SYSTEMS USING KYPIPE AND TTHM REGRESSION MODELS: APPLICATION TO TWO SYSTEMS IN KENTUCKY” (2023). Theses and Dissertations–Civil Engineering . 134. https://uknowledge.uky.edu/ce_etds/134