Efficiency of sequential ozone and UV-based treatments for the treatment of secondary effluent

Puspita, P; Roddick, Felicity; Porter, Nichola A.

doi:10.1016/j.cej.2015.01.077

Cited by 25 publications

(4 citation statements)

References 38 publications

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“…Para que las nuevas alternativas sean aceptadas por la sociedad, es necesario asegurar que todos los posibles riesgos ambientales se reduzcan a niveles aceptables. En este caso, los tratamientos avanzados de aguas residuales deben estudiarse e investigarse mejor (Zhang et al 2014, Puspita et al 2015, Wu et al 2015, Bai et al 2017.…”

Section: Introductionunclassified

Influencia De Los Catalizadores en La Ozonización De Agua Residual Sintética

Mendonça

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Aguiar

et al. 2021

RICA

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Se evalúa la influencia de catalizadores de carbón activado (Fe3+ y Mn2+) en la capacidad oxidativa del ozono en agua residual sintética con concentraciones iniciales de 8.9 ± 2.2 mg Pt Co/L para color verdadero, 2.9 ± 0.5 unidades de turbidez nefelométricas (NTU, por sus siglas en inglés) para turbiedad y 322.3 ± 40.0 mg/L para demanda química de oxígeno (DQO). La dosis de ozono varió de 2.07 a 7.15 gO3/h, en tanto que el tiempo de contacto de las burbujas de ozono con el efluente sintético fue de hasta 60 min. La constante cinética de la remoción de los contaminantes tiene una tendencia de primer orden y aumenta con la dosis de ozono. En comparación con la ozonización convencional, la ozonización aplicada de 7.15 gO3/h catalizada con carbón activado tuvo un porcentaje adicional de remoción para color verdadero, turbiedad y DQO de 9.1, 33.7 y 21.9 %, respectivamente, en el pH básico; 0, 6.5 y 47.7 %, respectivamente, en el pH ácido, y 0, 17.0 y 37.3 %, respectivamente, en el pH no corregido. Esto se debe a la capacidad del carbón activado para acelerar la descomposición del ozono en especies más reactivas y en compuestos orgánicos solubles. La presencia de Fe3+ en el pH ácido ocasionó un porcentaje adicional de remoción para DQO de 21.7 %. Y la presencia de Mn2+ en el pH ácido provocó un porcentaje adicional de remoción para color verdadero y DQO de 3.3 y 14.0 %, respectivamente, también en comparación con la ozonización convencional. En las configuraciones experimentales estudiadas, se recomiendan los catalizadores en el incremento de depuración de aguas residuales domésticas e industriales con alta carga orgánica biodegradable.

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Section: Introductionunclassified

Influencia De Los Catalizadores en La Ozonización De Agua Residual Sintética

Mendonça

Salla

Aguiar

et al. 2021

RICA

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“…The sequential reactions combine the advantages of different AOPs for improving treatment performance and promoting energy efficiency. 17,18 As no additional equipment is required for UEO, the O 3 -UEO selfsequential treatment, which combines the degradation ability of ozonation and the mineralization ability of UEO, has been proposed for process optimization. The environment friendliness and cost-effectiveness of the O 3 -UEO self-sequential treatment are determined by the time point of ultrasound irradiation, which has barely been reported.…”

Section: Introductionmentioning

confidence: 99%

Enhanced energy efficiency for the complete mineralization of diclofenac by self-sequential ultrasound enhanced ozonation

et al. 2020

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“…This is because wastewater represents a suitable water source that can be used after appropriate treatment to reduce the fresh water demand and to lower the environmental impact of wastewater discharge [3]. Consequently, effluent from municipal wastewater treatment plants (MWWTPs) is a potential source of recycled water; however, to ensure its approval by the target population, microbial, physical, and chemical pollutants need to be removed using appropriate treatment technologies [4,5].…”

Section: Introductionmentioning

confidence: 99%

Applications of Reverse and Forward Osmosis Processes in Wastewater Treatment: Evaluation of Membrane Fouling

Mecha¹

2018

Osmotically Driven Membrane Processes - Approach, Development and Current Status

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Although reverse osmosis (RO) process is widely used for wastewater reclamation, it requires high amount of energy that has a major effect on the economic effectiveness of the process. Furthermore, RO membranes are susceptible to fouling, which further limits their effectiveness and increases the costs due to the need for frequent cleaning.Consequently, the use of osmotically driven membrane separation processes such as forward osmosis (FO) has gained increasing consideration, although its uptake in wastewater remediation is still low. This is because the FO process, unlike the RO process, is operated by the osmotic gradient between the feed and draw solutions; therefore, it requires minimal or no hydraulic pressure. Hence, it has unique advantages, such as possibility of low fouling, and high water recovery. Nonetheless, the long-standing problem of membrane fouling still remains a major challenge even in the performance of FO processes especially when treating raw wastewaters, which have various contaminants. Furthermore, the mechanism of fouling in FO process has been found to be different from an RO process, and there is need for further studies to elucidate the differences of FO and RO fouling. These aspects are evaluated in this review.

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Efficiency of sequential ozone and UV-based treatments for the treatment of secondary effluent

Cited by 25 publications

References 38 publications

Influencia De Los Catalizadores en La Ozonización De Agua Residual Sintética

Influencia De Los Catalizadores en La Ozonización De Agua Residual Sintética

Enhanced energy efficiency for the complete mineralization of diclofenac by self-sequential ultrasound enhanced ozonation

Applications of Reverse and Forward Osmosis Processes in Wastewater Treatment: Evaluation of Membrane Fouling

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