Wastewater disinfection by ozone: main parameters for process design

Xu, Pei; Janex, Marie-Laure; Savoye, P.; Cockx, Arnaud; Лазарова, Валентина

doi:10.1016/s0043-1354(01)00298-6

Cited by 252 publications

(150 citation statements)

References 17 publications

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“…To provide a set of comparative scaling-up parameters for the disinfection technologies proposed in this work, a figure-of-merit proposed by the Photochemistry Commission of the International Union of Pure and Applied Chemistry (IUPAC) was used [22]. This figure-of-merit is the electric energy per order (E EO ) defined as the electric energy (kW-h) required to degrade a contaminant by one order of magnitude in a unit volume of contaminated water.…”

Section: Estimation Of Scaling-up Parametersmentioning

confidence: 99%

Disinfection of Primary Municipal Wastewater Effluents Using Continuous UV and Ozone Treatment

Bustos¹,

Vaca²,

López³

et al. 2014

JWARP

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UV radiation and ozonation were investigated as disinfection alternatives for the wastewater treatment plant. The inactivation of total and fecal coliforms using ozone and ultraviolet radiation as separate treatments was evaluated. Different ozone concentrations (3 to 40 mg O 3 /L) were applied and UV fluencies ranging from 8.5 to 12 mJ/cm 2 at different pH values (from 5 to 9) were tested. Best results were obtained for ozone doses near 20 mg/min with removals of 72% and 78% of fecal and total coliforms, respectively. The ozone also was capable of oxidizing organic matter in the effluent measured as COD (the highest removal obtained was 36% for 20 mg O 3 /min). Maximum bacterial resistance was observed at pH 7 in both cases. The UV light offered a high bacterial inactivation (over 80%) and the lowest bacterial inactivation was observed at pH 7. Finally, we obtained the electric energy per order (E EO , kWh/m 3 /order), defined as the electric energy (kW-h) required to degrade a contaminant by one order of magnitude in a unit volume of contaminated water, being noteworthy that E EO values for the UV process resulted were lower than those determined for the process with ozone in all the water flow tested.

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Section: Estimation Of Scaling-up Parametersmentioning

confidence: 99%

Disinfection of Primary Municipal Wastewater Effluents Using Continuous UV and Ozone Treatment

Bustos¹,

Vaca²,

López³

et al. 2014

JWARP

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“…Ozonation also provides a significant reduction of UV absorbance and color, which can be an advantage for some reuse applications [19]. Furthermore ozonation is a promising technology for enhanced wastewater treatment to eliminate various organic micropollutants [20].…”

Section: Action Mechanismsmentioning

confidence: 99%

Overview of the Main Disinfection Processes for Wastewater and Drinking Water Treatment Plants

et al. 2017

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Abstract:The use of water disinfection as a public health measure reduces the spread of diseases. Various disinfection technologies can be used to meet the pathogen inactivation demand in water. This work is an overview of the main disinfection technologies of wastewater and drinking water that reports for the conventional processes the action mechanism, the possible formation of by-products, the operative conditions, the advantages and disadvantages. For advanced and natural processes the action mechanisms are reported. Advanced technologies are interesting but are still in the research state, while conventional technologies are the most used. There is a tendency, especially in Italy, to use chlorine-based disinfectant, despite in some forms could lead to production of disinfection by-products.

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“…Embora o ozônio seja um desinfetante bastante utilizado para águas de abastecimento, ele não é muito aplicado para desinfecção de águas residuárias em função da alta exigência, em quantidade de ozônio (ROBSON & RICE, 1991;XU et al, 2002;GEHR et al, 2003).…”

Section: Parâmetrounclassified

Desinfecção de efluente anaeróbio com o uso de ozônio/cloro

Silva

Daniel

2015

Eng. Sanit. Ambient.

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RESUMOO principal objetivo desta pesquisa foi estudar o processo de oxidação, a eficiência da inativação de coliformes e a formação de subprodutos da ozonização, associado com a desinfecção de efluente sanitário anaeróbio proveniente de um reator UASB. Tal evento foi realizado por meio da aplicação das dosagens de ozônio de 5,0 mg.O 3 .L -1 + 10 mg.Cl 2 .L -1 (ensaio 1); ABSTRACTThe main purpose of this research was to study the oxidation process, the coliform inactivation effectiveness, and the formation of ozone disinfection byproducts, which were associated with disinfection of the anaerobic sanitary wastewater effluent from a UASB reactor. Nos últimos anos, em função da maior atenção dada às saúdes ambiental e pública, houve um aumento da preocupação com a possível toxicidade dos agentes desinfetantes e dos respectivos subprodutos da desinfecção.

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Wastewater disinfection by ozone: main parameters for process design

Cited by 252 publications

References 17 publications

Disinfection of Primary Municipal Wastewater Effluents Using Continuous UV and Ozone Treatment

Disinfection of Primary Municipal Wastewater Effluents Using Continuous UV and Ozone Treatment

Overview of the Main Disinfection Processes for Wastewater and Drinking Water Treatment Plants

Desinfecção de efluente anaeróbio com o uso de ozônio/cloro

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