Water and Wastewater Disinfection with Peracetic Acid and UV Radiation and Using Advanced Oxidative Process PAA/UV

Souza, Jeanette Beber de; Valdez, Fernanda Queiroz; Jeranoski, Rhuan Felipe; Vidal, Carlos Magno de Sousa; Cavallini, Grasiele Soares

doi:10.1155/2015/860845

Cited by 43 publications

(21 citation statements)

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“…As to the application of chlorine gas, there are alternatives such as inverse osmosis (Vingerhoeds et al, 2016), nanofiltration (Shon et al, 2013), UV disinfection, per acetic acid and advanced oxidative processes such as the PAA/UV (De Souza et al, 2015) which Life cycle assessment of four potable water treatment plants … Rev. Ambient.…”

Section: Resultsmentioning

confidence: 99%

Life cycle assessment of four potable water treatment plants in northeastern Colombia

Ortíz-Rodriguez¹,

Villamizar‐Gallardo²,

García³

2016

Rev. ambiente água

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There is currently great concern about the processes that directly or indirectly contribute to the potential for global warming, such as stratospheric ozone depletion or acidification. In this context, and provided that treated water is a basic public utility in urban centers around the world as well as in some rural areas, its impact on the environment is of great interest. Therefore, this study applied the environmental methodology of Life Cycle Assessment (LCA) to evaluate the environmental loads of four potable water treatment plants (PWTPs) located in northeastern Colombia following the international guidelines delineated in ISO 14040. The different stages of the drinking water process were thoroughly assessed, from the catchment point through pumping to the distribution network. The functional unit was defined as 1 m 3 of drinking water produced at the plant. The data were analyzed through the database Ecoinvent v.3.01, and modeled and processed in the software LCA-Data Manager. The results showed that in plants PLA-CA and PLA-PO, the flocculation process has the highest environmental load, which is mostly attributable to the coagulant agent, with a range between 47-73% of the total impact. In plants PLA-TON and PLA-BOS, electricity consumption was identified as the greatest impact source, with percentages ranging from 67 to 85%. Treatment processes and techniques, bioclimatic conditions and culturally driven consumption behavior varied from region to region. Furthermore, changes in treatment processes and techniques are likely to affect the environment during all stages of a plant's operational cycle.Keywords: climate change, environmental impact, treated water. Avaliação do ciclo de vida de quatro estações de tratamento de água potável localizado no nordeste da Colômbia RESUMO Atualmente, existe uma grande preocupação com os processos que direta ou indiretamente contribuem para as alterações climáticas, destruição da camada de ozônio ou acidificação, entre outros impactos ambientais. Neste contexto, e desde que a água tratada constitui um serviço público básico em centros urbanos de todo o mundo e em algumas áreas rurais, o impacto de suas emissões no meio ambiente tem sido considerado de grande interesse. Assim, na pesquisa atual foi aplicada a metodologia ambiental de avaliação do ciclo da vida (LCA) para avaliar os impactos ambientais de quatro estações de tratamento de água potável (PWTPs), localizadas no nordeste da Colômbia seguindo diretrizes internacionais da ISO 14040. As diferentes etapas do processo de purificação a partir do ponto de captação por meio de bombeamento para a rede de distribuição foram completamente avaliadas. A unidade funcional foi definida como 1 m 3 de água potável produzida na fábrica. Os dados foram analisados com base no banco de dados Ecoinvent v.3.01 e processados no software LCAData Manager. Os resultados possibilitaram determinar que em plantas PLA-CA e PLA -POR, o processo de floculação tem a maior carga ambiental, o que é principalmente atribuível ao agente ...

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Section: Resultsmentioning

confidence: 99%

Life cycle assessment of four potable water treatment plants in northeastern Colombia

Ortíz-Rodriguez¹,

Villamizar‐Gallardo²,

García³

2016

Rev. ambiente água

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“…UV/PAA process has been poorly investigated so far, and the previous works have been basically focused on bacteria inactivation (Koivunen and Heinonen-Tanski, 2005;de Souza et al 2015); only recently its effect on pharmaceuticals has been addressed (Cai et al, 2017). PAA (CH CO 3 H) aqueous solutions commercially available are an equilibrium mixture of acetic acid (CH 3 COOH), H O 2 , PAA and water, according to the reaction:…”

Section: Photolysis Of Paa and Effect On Paa And H 2 O 2 Concentrationsmentioning

confidence: 99%

Tertiary treatment of urban wastewater by solar and UV-C driven advanced oxidation with peracetic acid: Effect on contaminants of emerging concern and antibiotic resistance

et al. 2019

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Photo driven advanced oxidation process (AOP) with peracetic acid (PAA) has been poorly investigated in water and wastewater treatment so far. In the present work its possible use as tertiary treatment of urban wastewater to effectively minimize the release into the environment of contaminants of emerging concern (CECs) and antibiotic resistant bacteria was investigated. Different initial PAA concentrations, two light sources (sunlight and UV-C) and two different water matrices (groundwater (GW) and wastewater (WW)) were studied. Low PAA doses were found to be effective in the inactivation of antibiotic resistant Escherichia coli (AR E. coli) in GW, being UV-C driven process faster (detection limit (DL) achieved for a cumulative energy (QUV) of 0.3 kJL-1 with 0.2 mg PAA L-1) than solar driven one (DL achieved at QUV=4.4 kJL-1 with 0.2 mg PAA L-1). Really fast inactivation rates of indigenous AR E. coli were observed in WW. Higher QUV and PAA initial doses were necessary to effectively remove the three target CECs (carbamazepine (CBZ), diclofenac and sulfamethoxazole), being CBZ the more refractory one. In conclusion, photo driven AOP with PAA can be effectively used as tertiary treatment of urban wastewater but initial PAA dose should be optimized to find the best compromise between target bacteria inactivation and CECs removal as well as to prevent scavenging effect of PAA on hydroxyl radicals because of high PAA concentration.

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“…Water scarcity is currently one of the main challenges being faced by humans and governments; consequently, water quality protection for drinking purposes, aiming to reduce the impact on human health, represents a priority issue [ 1 ]. One of the main sources of water contamination is the release of wastewater that has not been properly treated, representing an important possible contributor to numerous pathogens and chemical contaminants [ 2 , 3 ]. Primary and secondary wastewater treatment typically achieves 90–99.9% enteric microflora reduction, but in some cases, this reduction may be poor.…”

Section: Introductionmentioning

confidence: 99%

Comparison of UV, Peracetic Acid and Sodium Hypochlorite Treatment in the Disinfection of Urban Wastewater

et al. 2021

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One source of water contamination is the release of wastewater that has not undergone efficient treatment. The aim of this study was to evaluate the reduction obtained with sodium hypochlorite (NaClO), UV and peracetic acid disinfection treatment of Salmonella spp., pathogenic Campylobacter, STEC and bacterial indicators in three full-scale municipal wastewater plants. A general reduction in Salmonella was observed after disinfection, but these bacteria were detected in one UV-treated sample (culture method) and in 33%, 50% and 17% of samples collected after NaClO, UV and PAA disinfection treatments, respectively (PCR method). A better reduction was also observed under NaClO disinfection for the microbial indicators. Independent of the disinfection treatment, E. coli O157:H7 was not detected in the disinfected samples, whereas some samples treated with UV and PAA showed the presence of the stx1 gene. No reduction in the presence of stx2 genes was verified for any of the disinfection treatments. Campylobacter was not detected in any of the analysed samples. The overall results highlight a better reduction in microbiological parameters with a NaClO disinfection treatment in a full-scale municipal wastewater plant compared with UV and PAA. However, the results indicate that a complete and specific monitoring program is necessary to prevent a possible risk to public health.

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Water and Wastewater Disinfection with Peracetic Acid and UV Radiation and Using Advanced Oxidative Process PAA/UV

Cited by 43 publications

References 10 publications

Life cycle assessment of four potable water treatment plants in northeastern Colombia

Life cycle assessment of four potable water treatment plants in northeastern Colombia

Tertiary treatment of urban wastewater by solar and UV-C driven advanced oxidation with peracetic acid: Effect on contaminants of emerging concern and antibiotic resistance

Comparison of UV, Peracetic Acid and Sodium Hypochlorite Treatment in the Disinfection of Urban Wastewater

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