Avaliação ecotoxicológica de efluente de tratamento secundário de esgoto sanitário após desinfecção com ácido peracético, cloro, ozônio e radiação ultravioleta

Costa, Juliana Berninger da

doi:10.11606/t.18.2007.tde-07042008-144334

Cited by 9 publications

(13 citation statements)

References 30 publications

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“…After treatment, the effluent is released into the Ribeirão das Cruzes stream. Water from this stream is used for the irrigation of orchards and sugarcane and for navigation (Costa 2007).…”

Section: Methodsmentioning

confidence: 99%

“…The concentration of disinfectants and the contact times were chosen based on the range of doses commonly used at treatment plants (USEPA 1975(USEPA , 1999 and in preliminary investigative assays (Costa 2007).…”

Section: Disinfection Assaysmentioning

confidence: 99%

“…However, low levels of residual chlorine can be harmful to aquatic life if chlorinated wastewaters are discharged into the environment (Manning et al 1996). Moreover, the chlorination process may result in the formation of genotoxic, mutagenic, and/or carcinogenic disinfection by-products (DBP) (Rebhun et al 1997;Crebelli et al 2003;Sun et al 2009;Wu et al 2013). As a result of DBP concerns concerning chlorine, environmental agencies, as well as the wastewater treatment plants, have placed more emphasis on the use of alternative disinfectants.…”

Section: Introductionmentioning

confidence: 99%

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Toxicity on aquatic organisms exposed to secondary effluent disinfected with chlorine, peracetic acid, ozone and UV radiation

et al. 2014

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The toxic potential of four disinfectant agents (chlorine, ozone, peracetic acid and UV radiation), used in the disinfection of urban wastewater, was evaluated with respect to four aquatic organisms. Disinfection assays were carried out with wastewater from the city of Araraquara (São Paulo State, Brazil), and subsequently, toxicity bioassays were applied in order to verify possible adverse effects to the cladocerans (Ceriodaphnia silvestrii and Daphnia similis), midge larvae Chironomus xanthus and fish (Danio rerio). Under the experimental conditions tested, all the disinfectants were capable of producing harmful effects on the test organisms, except for C. xanthus. The toxicity of the effluent to C. silvestrii was observed to increase significantly as a result of disinfection using 2.5 mg L(-1) chlorine and 29.9 mg L(-1) ozone. Ozonation and chlorination significantly affected the survival of D. similis and D. rerio, causing mortality of 60 to 100 % in comparison to the non-disinfected effluent. In experiments with effluent treated with peracetic acid (PAA) and UV radiation, a statistically significant decrease in survival was only detected for D. rerio. This investigation suggested that the study of the ideal concentrations of disinfectants is a research need for ecologically safe options for the treatment of wastewater.

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Section: Methodsmentioning

confidence: 99%

Section: Disinfection Assaysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Toxicity on aquatic organisms exposed to secondary effluent disinfected with chlorine, peracetic acid, ozone and UV radiation

et al. 2014

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“…It degrades rapidly in biodegradable and harmless substances such as acetic acid and active oxygen, which pose no risk of toxicity and does not affect the taste and odor of food. Do not have mutagenic or carcinogenic effects (COSTA, 2007). However peroxyacetic acid has low stability during storage and handling must be done carefully.…”

Section: Sanitizers As a Control Measurementioning

confidence: 99%

Occurrence of Salmonella in Minimally Processed Vegetables

Srebernich¹,

Silveira²,

Gonçalves³

2012

Salmonella - A Dangerous Foodborne Pathogen

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“…A propriedade oxidante do APA torna-o um promissor substituinte, apresentando eficiência de inativação de E. coli, uma bactéria indicadora de contaminação, superior ao ozônio e a radiação ultravioleta (COSTA, 2007).…”

Section: Introductionunclassified

Utilização do ácido peracético na desinfecção de esgoto sanitário: uma revisão

et al. 2012

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ResumoA utilização do Ácido Peracético (APA) na desinfecção de esgoto sanitário vem sendo pesquisada por diversos autores, principalmente em países europeus, onde os padrões microbiológicos para lançamento de efluentes em corpos hídricos são mais rigorosos e a moderação no uso do cloro, devido à formação dos trihalometanos, é recomendada. Nesta perspectiva, este trabalho apresenta uma compilação de pesquisas aplicadas diretamente ao saneamento ambiental, como também de pesquisas relacionadas às características químicas do APA e seus mecanismos de reação. A combinação destas informações fornece uma visão teórica e prática da utilização deste oxidante, a qual contribui para a continuidade de pesquisas nesta área, visando benefícios ambientais, econômicos e de saúde pública. Palavras-chave: Ácido peracético. Desinfecção de esgoto sanitário. Características químicas do APA. AbstractThe use of peracetic acid (PAA) to disinfect the wastewater has been researched for diverse authors, mainly in European countries, where the microbiological standards to release the effluents in water bodies are more severe and the moderation to use chlorine, due to the raising of trihalometanos is recommended. In this perspective, this work presents a compilation of researches applied directly to environmental sanitation, as well as the researches related to chemical characteristics of PAA and its reaction mechanisms. The combination of this information gives a theoretical and practical view of the use of this oxidant, which contributes to continue the researches in this area, aiming to benefit the environment, economy and public health system.

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Avaliação ecotoxicológica de efluente de tratamento secundário de esgoto sanitário após desinfecção com ácido peracético, cloro, ozônio e radiação ultravioleta

Cited by 9 publications

References 30 publications

Toxicity on aquatic organisms exposed to secondary effluent disinfected with chlorine, peracetic acid, ozone and UV radiation

Toxicity on aquatic organisms exposed to secondary effluent disinfected with chlorine, peracetic acid, ozone and UV radiation

Occurrence of Salmonella in Minimally Processed Vegetables

Utilização do ácido peracético na desinfecção de esgoto sanitário: uma revisão

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