Gresham Smith’s Ben Luke and Jason Ogg to Speak at WEFTEC

WEFTEC 2020

Virtual Event

 

Disinfection of Primary Effluent: Bench Scale Evaluation of Peracetic Acid to Achieve Enterococcus Limits for CEPT Marine Discharge

Presented by Gresham Smith Water Resources Engineer Ben Luke, P.E., and Jason Ogg, P.E.

Over the last decade, peracetic acid (PAA) has become known as a reliable option for the inactivation of pathogenic microbes in wastewater effluent, especially in challenging conditions.  However, there has been limited research into the application of PAA in conjunction with a chemically-enhanced primary treatment (CEPT) process to achieve disinfection compliance for Enterococcus.

Guam Waterworks Authority (GWA) owns and operates the 12-MGD Hagåtña Wastewater Treatment Plant (WWTP), a CEPT facility, situated on a man-made island off the coast of Hagåtña, Guam. This facility is authorized under the NPDES permit program to discharge treated effluent through a modified deep ocean outfall pipe approximately 2,600 linear feet into the Philippine Sea, a sensitive marine environment. With a goal of implementing interim disinfection prior to the upgrade of the facility to secondary treatment, GWA initiated a study to evaluate the effectiveness of PAA to achieve Enterococcus limits while simultaneously optimizing the CEPT process to aid with disinfection compliance.

During this presentation, Gresham Smith’s Ben Luke and Jason Ogg will explain the study methodologies and findings, highlighting the wide-ranging application possibilities for inactivating pathogens at CSO discharge facilities and blended wastewater effluents resulting from wet weather events.

 

More information and a full conference schedule can be accessed online here.