Project #5140

The Impact of Pre-Chlorination and GAC Treatment on DBP Formation and Overall Toxicity in Drinking Water

In Progress
Principal Investigator
Research Manager
Katie Spahr, PhD, PE
Carollo Engineers
Disinfection Byproducts (DBPs)
Advanced Treatment
Source & Receiving Waters


This project will investigate the impact of granular activated carbon (GAC) with and without pre-chlorination on disinfection byproduct (DBP) formation and the resulting toxicity of drinking water using appropriate bioassays. A systematic evaluation of source water bromide and iodide concentrations, disinfection pH, and degree of GAC breakthrough will be conducted at the pilot-scale. In addition, DBP formation and toxicity will be analyzed at full-scale plants that use (1) GAC to treat groundwater, surface water, and potable reuse water; (2) ozone and biological filtration to treat surface water; and (3) aeration to strip volatile DBPs.