Project #5129

Demonstration of Innovation to Improve Pathogen Removal, Validation, and/or Monitoring in Carbon Based Advanced Treatment (CBAT) for Potable Reuse

$491,696
In Progress
Principal Investigator
Andy
Salveson
Research Manager
Ms. Lyndsey Bloxom
Contractor
Carollo Engineers
Microbes & Pathogens
Reuse
Advanced Treatment
Reuse, Potable
Treatment

Abstract

The goal of this project is to provide utilities and regulators with clear guidance for pathogen reduction crediting for two key processes within carbon-based advanced treatment, including ozone (O3) and biologically activated carbon filtration (BAC). Objectives include (1) validating 4- to 6-log virus reduction credit through ozonation using an ozone to total organic carbon+nitrite (O3:[TOC+NO2]) ratio as the dose control method to optimize energy use and bromate formation while maintaining robust virus disinfection; (2) documenting pathogen removal through BAC with different design and operational scenarios; (3) advancing the O3:(TOC+NO2) approach with machine learning; and (4) developing an ozone validation protocol for the O3:(TOC+NO2) approach. The team will compile a robust dataset of existing studies and conduct bench- and pilot-scale testing at six utilities to confirm O3:TOC+NO2 dose control mechanisms and will then develop a validation protocol that can be used by utilities and regulators to confirm the optimum ozone operational approach.