A Review of Ozone Systems Costs for Municipal Applications. Report by the Municipal Committee – IOA Pan American Group

Mundy, Bill; Kuhnel, Ben; Hunter, Glenn; Jarnis, Robert N.; Funk, Denise; Walker, Susan; Burns, Nick; Drago, Joseph A.; Nezgod, William; Huang, Joe; Rakness, Kerwin L.; Jasim, Saad; Joost, Ron; Kim, Robert; Muri, James; Nattress, Joseph; Oneby, Mike; Sosebee, Al; Thompson, Craig M.; Walsh, Mickey; Schulz, Chris

doi:10.1080/01919512.2018.1467187

Cited by 46 publications

(16 citation statements)

References 2 publications

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“…Ozone is an unstable gas that needs on-site production. The main costs of ozone operation relate to a combination of energy and oxygen consumption [12]. Usually, ozone is dissolved into the water phase via bubbling using various types of gas diffusers or side stream injection [13].…”

Section: Introductionmentioning

confidence: 99%

A Single Tube Contactor for Testing Membrane Ozonation

Zoumpouli

Baker

Taylor

et al. 2018

Water

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A membrane ozonation contactor was built to investigate ozonation using tubular membranes and inform computational fluid dynamics (CFD) studies. Non-porous tubular polydimethylsiloxane (PDMS) membranes of 1.0–3.2 mm inner diameter were tested at ozone gas concentrations of 110–200 g/m3 and liquid side velocities of 0.002–0.226 m/s. The dissolved ozone concentration could be adjusted to up to 14 mg O3/L and increased with decreasing membrane diameter and liquid side velocity. Experimental mass transfer coefficients and molar fluxes of ozone were 2.4 × 10−6 m/s and 1.1 × 10−5 mol/(m2 s), respectively, for the smallest membrane. CFD modelling could predict the final ozone concentrations but slightly overestimated mass transfer coefficients and molar fluxes of ozone. Model contaminant degradation experiments and UV light absorption measurements of ozonated water samples in both ozone (O3) and peroxone (H2O2/O3) reaction systems in pure water, river water, wastewater effluent, and solutions containing humic acid show that the contactor system can be used to generate information on the reactivity of ozone with different water matrices. Combining simple membrane contactors with CFD allows for prediction of ozonation performance under a variety of conditions, leading to improved bubble-less ozone systems for water treatment.

show abstract

Section: Introductionmentioning

confidence: 99%

A Single Tube Contactor for Testing Membrane Ozonation

Zoumpouli

Baker

Taylor

et al. 2018

Water

View full text Add to dashboard Cite

show abstract

“…Ozone is an unstable gas that needs on-site production. The main costs for ozone operation are a combination of energy and oxygen consumption [12]. Usually, ozone is dissolved into the water phase via bubbling using various types of gas diffusers or side stream injection [13].…”

Section: Introductionmentioning

confidence: 99%

A Single Tube Contactor for Testing Membrane Ozonation

Zoumpouli¹,

Baker²,

Taylor³

et al. 2018

Preprint

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A membrane ozonation contactor was built to investigate ozonation using tubular membranes and to inform computational fluid dynamics (CFD) studies. Non-porous tubular polydimethylsiloxane (PDMS) membranes of 1.0 – 3.2 mm inner diameter were tested at ozone gas concentrations of 110 – 200 g m−3 and liquid side velocities of 0.002 m s−1 – 0.226 m s−1. The dissolved ozone concentration could be adjusted to up to 14 mg O3 L−1 and increased with decreasing membrane diameter and liquid side velocity. Experimental mass transfer coefficients and molar fluxes of ozone were 1.1∙10−5 mol m−2 s−1 and 2.4∙10−6 m s−1, respectively, for the smallest membrane. CFD modelling could predict the final ozone concentrations but slightly overestimated mass transfer coefficients and molar fluxes of ozone. Model contaminant degradation experiments and UV absorption measurements of ozonated water samples in both ozone (O3) and peroxone (H2O2/O3) reaction systems in pure water, river water, wastewater effluent and solutions containing humic acid show that the contactor system can be used to generate information on the reactivity of ozone with different water matrices. Combining simple membrane contactors with CFD allows predicting ozonation performance under a variety of conditions leading to improved bubble-less ozone systems for water treatment.

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“…Ozone disinfection has been largely limited to Europe and North America, in part because of the high costs of constructing and powering centralized ozone generation on a large scale ( Loeb et al , 2012 ; Mundy et al , 2018 ). A disadvantage of ozonation is that, unlike chlorination, it does not leave a residual level of a disinfectant in treated water.…”

Section: Discussionmentioning

confidence: 99%

Decentralized solar-powered drinking water ozonation in Western Kenya: an evaluation of disinfection efficacy

et al. 2020

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Background: Decentralized drinking water treatment methods generally apply membrane-based treatment approaches. Ozonation of drinking water, which previously has only been possible at large centralized facilities, can now be accomplished on a small-scale using microplasma technology. The efficacy of decentralized solar-powered drinking water treatment systems has not previously been described. Methods: We established a 1,000L decentralized solar-powered water treatment system located in Kisumu County, Kenya. Highly contaminated surface water is pumped to the treatment system, which includes flocculation and filtration steps prior to ozonation. Turbidity, total coliform bacteria, and E. coli were measured at various stages of water treatment, and bacterial log reduction values (LRVs) were calculated. Results: Forty-seven trials were conducted in which1000L of water were flocculated, filtered, and ozonated for 180 minutes. Baseline turbidity and E. coli concentrations were reduced from a median of 238 nephelometric turbidity units (NTU) and 2,419.7 most probable number/100mL, respectively, in surface water to 1.0 NTU and undetectable E. coli after ozonation for 180 minutes. The median E. coli LRV was 3.99. Conclusions: The solar-powered, decentralized water treatment system that utilizes ozonation for disinfection was founded to reduce E. coli by more than 3 log-orders of magnitude despite the high turbidity of the raw water. Further research is needed to characterize limitations, scalability, economic viability, and community perspectives that could help determine the role for similar systems in other settings.

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A Review of Ozone Systems Costs for Municipal Applications. Report by the Municipal Committee – IOA Pan American Group

Cited by 46 publications

References 2 publications

A Single Tube Contactor for Testing Membrane Ozonation

A Single Tube Contactor for Testing Membrane Ozonation

A Single Tube Contactor for Testing Membrane Ozonation

Decentralized solar-powered drinking water ozonation in Western Kenya: an evaluation of disinfection efficacy

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