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Description: Performic Acid Disinfection for a Sustainable Future
Performic Acid Disinfection for a Sustainable Future
Abstract
KemConnect DEX, a new North American disinfection technology, employs performic acid (PFA) chemistry. PFA has a strong oxidation potential, higher than chlorine compounds and peracetic acid but lower than ozone. PFA reacts quickly and degrades to CO2 and water in a short time. PFA is made onsite for municipal treatment plant (WWTP) applications using the DEX unit. The presented research shows PFA efficacy tests on samples from US WWTPs. Results demonstrate that low PFA concentrations, 0.25-0.5 mg/L dose, reduced E. coli to below required counts, and PFA degrades to below toxic levels in a short time. The current study presents novel acute toxicity data of PFA using Pimephales promelas, Daphnia magna, and Ceriodaphnia dubia. KemConnect DEX is a superior solution for disinfection since it reduces regulated bacteria to below-required numbers. At the same time, it also degrades to below toxic levels, eliminating the need for quenching of residual disinfectant.
KemConnect DEX is a new North American technology that uses performic acid (PFA) to disinfect municipal wastewater. PFA is a strong oxidizer that reacts quickly and degrades to CO2 and water in a short time. The paper presents PFA efficacy results, where low PFA doses (0.25-0.5 mg/L) reduced regulated bacteria to below permit requirements. The PFA then quickly degraded to below toxic levels eliminating the need for quenching of residual PFA. This paper includes PFA acute toxicity data against strains of water fleas and fathead minnows.
SpeakerPorat, Iris
Presentation time
16:20:00
16:40:00
Session time
16:00:00
17:30:00
SessionPeracid Post-up: What's New in Alternative Chemical Disinfection with PAA and PFA?
Session number112
TopicDisinfection and Public Health, Municipal Wastewater Treatment Design, Policy and Regulation, Sustainability and Climate Change
TopicDisinfection and Public Health, Municipal Wastewater Treatment Design, Policy and Regulation, Sustainability and Climate Change
Author(s)
Iris Porat
Author(s)I. Porat1; C. Hill1; J.M. McDonald1; W. Hall2;
Author affiliation(s)Kemira Chemicals, Inc. Atlanta, GA1Hall and Associates, DC2Hall & Associates4
SourceProceedings of the Water Environment Federation
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Oct 2021
DOI10.2175/193864718825158016
Volume / Issue
Content sourceWEFTEC
Copyright2021
Word count8

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