268 - Adding Multispecies Water Quality Reactions to Resilience Modeling Tools

The resilience of a drinking water distribution system can be associated with both the hydraulics and water quality of the system. The Water Network Tool for Resilience (WNTR) relied on the water quality component of EPANET 2.2 to track and transport a single species within the distribution system, such as a conservative tracer or disinfectant decay. An updated version of EPANET-MSX (multi-species extension) was recently released that simulates the advection, dispersion, and reaction of multiple, interacting biological and chemical species. This type of multi-species modeling has become particularly important as issues like disinfection by-products, lead, and system contamination have gained renewed focus and concern but might not be easily or correctly modeled with the single species limit within EPANET. The EPANET-MSX 2.0 toolkit has now been integrated into WNTR. Additionally, a library of different chemical reactions has been made available in WNTR with the MSX extension to more easily store, organize, and track the citations of the available reaction models. This extension supplements the existing WNTR capabilities and enables multi-species water quality impacts to be directly incorporated into the resilience analysis. In this presentation, we provide an overview of these recent updates to WNTR and highlight how it can be used in future research.
SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525