Peracetic Acid Wastewater Disinfection To Eliminate Formation of Disinfection Byproducts at U.S. Naval Mayport Station Wastewater Treatment Facility: Permitting, Trialing and Full Scale Implementation

Au, Kwok-Keung; Block, P. A.; Oller, Phil; McPherson, Scott W.

doi:10.2175/193864716819706103

Cited by 1 publication

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“…For the sake of comparison with studies done on wastewaters, the disinfection with a PAA dose of 10 mg.L -1 , performed very well. For samples 1 and 2 it reached 5 log units reduction, higher than the results obtained by Atasi et al (2001) and Andreoli et al (2013), for whom doses of 10 to 20 mg.L -1 PAA removed 3 log units of E. Coli in stormwater sewers, and the results obtained by Au et al (2016), with maximum inactivation of 3.65 log units for 15 minutes PAA contact time (2, 3, 5 and 7 mg.L -1 ) when PAA was added to domestic and industrial effluents after the activated sludge treatment. Coyle et al (2014) observed an average of 4,77 log units of E. Coli inactivation with PAA dose of 10 mg.L -1 after 10 min, which was similar to the value obtained with the present work.…”

Section: Resultssupporting

confidence: 67%

“…Several studies of the disinfection efficiency in wastewaters, (Atasi et al, 2001;Kitis, 2004;Koivunen & Heinonen-Tanski, 2005;Cavallini et al, 2012;Andreoli et al 2013;Chhetri et al, 2014;Coyle et al, 2014;Au et al, 2016) mention inactivation values of Escherichia Coli and Enterococcus greater than 3 log units, in effluents with an initial count of 10 2 to 10 6 MPN/100 mL. In those studies various doses were tested, from 2 mg.L -1 up to 100 mg.L -1 PAA, but there is a general consensus that 2 to 15 mg.L -1 are sufficient to reach satisfactory levels of disinfection, provided sufficient contact time is allowed.…”

Section: Introductionmentioning

confidence: 99%

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Fast Disinfection of Contaminated Stormwater Using Peracetic Acid

Santos¹,

Teixeira²,

Volschan³

2021

J. Urb. Environ. Engng

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This work evaluates the performance of peracetic acid (PAA) for the disinfection of stormwater runoffs contaminated by domestic sewage with the objective of using the collecting systems as contact reactors for in-situ disinfection. PAA is increasingly being used as a substitute for chlorination in the disinfection of wastewaters because of its rapid degradability and the absence of chlorinated organic by-products. In Brazil, and despite the adoption of the separator system in sewage systems, there is a large amount of domestic effluents that are piped directly into the stormwater systems, contributing to the contamination of water bodies. The efficiency of the disinfection of Escherichia Coli was evaluated by applying different doses (2, 5 and 10 mg.L -1 ) of PAA with short contact times (2, 5 and 10 minutes) in real stormwater samples collected at three different points of the stormwater system of the city of Rio de Janeiro. Trials were performed simulating the conditions and flow times available in the stormwater sewers. The results were excellent, with removals up to 5 log units with 10 mg.L -1 peracetic acid and 2 minutes contact time. Where there was available a contact time of at least 5 minutes, a dose of 5 mg.L -1 was sufficient.

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Section: Resultssupporting

confidence: 67%