Chlorine and peracetic acid in decentralized wastewater treatment: Disinfection, oxidation and odor control

Freitas, Bruno de Oliveira; Leite, Luan de Souza; Daniel, Luiz Antônio

doi:10.1016/j.psep.2020.11.047

Cited by 26 publications

(21 citation statements)

References 35 publications

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“…The oxidation tests used the same PAA concentration just to standardize all the steps of this study, once the study focus on the PAA interference in the COD tests and not in the PAA application itself. It is important to mention that the PAA concentration required for wastewater treatment needs to be optimized according to the desirable quality for the wastewater effluent (Freitas et al 2021).…”

Section: Oxidation Experimentsmentioning

confidence: 99%

“…Additionally, a more comparative discussion is not possible because no other study investigated the PAA quench by SMBS dose in details. Usually, the studies adopt a SMBS/PAA ratio or theorical values, however no additional investigation is requested or reported (Enviro Tech Chemical Services 2021;Freitas et al 2021). In this context, it is fundamental to determine the optimal SMBS dose to guarantee the total neutralization before using the PAA commercial solution in tests.…”

Section: Cod Variation With Paa Concentrationmentioning

confidence: 99%

“…The PAA (peroxyacetic acid, CH 3 COOOH) stands out as a safe and environmental friendly disinfectant, which breaks down into harmless products such as H 2 O 2 , oxygen, water, and acetic acid (Ao et al 2021;Kim & Huang 2021). In the recent years, PAA has been attracting greater interest in wastewater treatment for disinfection and oxidation of targeting compounds (Falsanisi et al 2006;Appels et al 2011;Amerian et al 2019;Luukkonen et al 2020;Freitas et al 2021). According to a recent report, the global PAA market will grow to $1.3 billion by 2026, while the market fraction for wastewater treatment is expected to grow by 8% per year over that same time frame (Bettenhausen 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Then, it is fundamental to guarantee the total neutralization of oxidant species using quenching agents before the COD quantification in PAA-based treatment. Different quenching agents of residual PAA/H 2 O 2 have been reported in the literature, such as sodium thiosulphate (Luukkonen et al 2014), catalase (Flores et al 2014), sodium metabisulfite (SMBS) (Freitas et al 2021), and sodium bisulfite (Wang et al 2019). The SMBS application is usually recommended by some manufacturers of PAA solution due to its effectiveness in terms of mass ratio (Enviro Tech Chemical Services 2021).…”

Section: Introductionmentioning

confidence: 99%

“…The SMBS application is usually recommended by some manufacturers of PAA solution due to its effectiveness in terms of mass ratio (Enviro Tech Chemical Services 2021). Published studies usually adopt a SMBS/PAA ratio or theorical values, however no additional investigation is requested or reported (Enviro Tech Chemical Services 2021;Freitas et al 2021). Furthermore, the pH effect in PAA neutralization by SMBS in a wide range pH is still unknown.…”

Section: Introductionmentioning

confidence: 99%

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Implications of COD analysis use in the peracetic acid-based wastewater treatment

Leite

Tango

Filho

et al. 2021

Water Science and Technology

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Peracetic acid (PAA) stands out as a safe and environmental-friendly oxidant and disinfectant which has been effectively used in wastewater treatment. Chemical oxygen demand (COD) is a very popular analysis in wastewater treatment, however the interference of residual PAA on the COD measurement is still unknown. In this context, this study investigated the implications of applying the COD analysis in PAA-based treatment. Each 1 mg·L−1 of PAA increased the COD concentration around 13.5 mg O2·L−1. Residual PAA and hydrogen peroxide (H2O2) were efficiently neutralized by sodium metabisulfite (SMBS) at the optimal SMBS/PAA ratio of 10.2:1 in a wide pH range (5 to 9). The effect of PAA addition in the COD concentration was evaluated in different water matrices (potassium hydrogen phthalate and wastewater solutions). The COD results with the SMBS addition at optimal SMBS/PAA ratio were lower than the ones without it. It may happen due to the neutralization of residual H2O2/PAA and the complexity of the water matrices which can interfere in the COD results. This study discussed the impact of the residual H2O2/PAA neutralization before the COD analysis and this investigation can be used as a practical guideline for the correct COD measurement in PAA-based treatment.

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Section: Oxidation Experimentsmentioning

confidence: 99%

Section: Cod Variation With Paa Concentrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Implications of COD analysis use in the peracetic acid-based wastewater treatment

Leite

Tango

Filho

et al. 2021

Water Science and Technology

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Peracetic acid as a disinfectant for wastewater reuse — Regulation (EU) 2020/741 application on a pilot-scale

Dias

Sousa

Lourinho

et al. 2023

Environ Monit Assess

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Water scarcity affects already a large part of the world's population. To overcome this situation, water management is needed, and wastewater reuse must be implemented and included as a new approach. To achieve that objective water quality must comply with the parameters established in the Regulation (EU) 2020/741 of the European Parliament and the Council of the European Union and new treatment solutions have to be developed. The main goal of this pilot study was to evaluate the peracetic acid (PAA) disinfection efficiency in a real wastewater treatment plant (WWTP) in order to accomplish the wastewater reuse objective. To this end, six disinfection conditions were studied, three PAA doses (5, 10, and 15) and three contact times (5, 10, and 15) based on the commonly used disinfection operational conditions in real WWTP. Comparing the Total Suspended Solids (TSS), turbidity, Biological Oxygen Demand (BOD5) and Escherichia coli content, after and before the disinfection step, was possible to conclude that PAA ensures the Regulation (EU) 2020/741 requirements and that the disinfected effluent can be reused for several uses. All the conditions in which the PAA dose was 15 mg/L and the condition with 10 mg/L of PAA with a contact time of 15 min were the most promising, presenting the second highest water quality class achieved. The results of this study illustrate the potential of PAA as an alternative disinfectant for wastewater treatment and, bring it closer to the water reuse objective by presenting several possibilities for water uses.

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Acute toxicity of disinfection by-products from chlorination of algal organic matter to the cladocerans Ceriodaphnia silvestrii and Daphnia similis: influence of bromide and quenching agent

Leite

Ogura

Santos

et al. 2022

Environ Sci Pollut Res

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Chlorine and peracetic acid in decentralized wastewater treatment: Disinfection, oxidation and odor control

Cited by 26 publications

References 35 publications

Implications of COD analysis use in the peracetic acid-based wastewater treatment

Implications of COD analysis use in the peracetic acid-based wastewater treatment

Peracetic acid as a disinfectant for wastewater reuse — Regulation (EU) 2020/741 application on a pilot-scale

Acute toxicity of disinfection by-products from chlorination of algal organic matter to the cladocerans Ceriodaphnia silvestrii and Daphnia similis: influence of bromide and quenching agent

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