Contaminants of emerging concern removal from real wastewater by UV/free chlorine process: A comparison with solar/free chlorine and UV/H2O2 at pilot scale

Cerreta, Giusy; Roccamante, Melina; Oller, Isabel; Malato, Sixto; Rizzo, Luigi

doi:10.1016/j.chemosphere.2019.124354

Cited by 46 publications

(15 citation statements)

References 48 publications

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“…Most of the investigations using UV/Oxidant processes have focused on the removal of target compounds spiked in synthetic matrices at laboratory and pilot scales with a good degree of degradation of between 80-90% of the CECs. It was also found that generally, UV/H 2 O 2 processes were less effective in the degradation of CECs as compared to other oxidative species [67,87,88]. Certain CECs are also more resilient to UV/H 2 O 2 processes.…”

Section: Uv/oxidantmentioning

confidence: 94%

Emerging Contaminants: An Overview of Recent Trends for Their Treatment and Management Using Light-Driven Processes

Lee

Lim

Loh

et al. 2021

Water

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The management of contaminants of emerging concern (CECs) in water bodies is particularly challenging due to the difficulty in detection and their recalcitrant degradation by conventional means. In this review, CECs are characterized to give insights into the potential degradation performance of similar compounds. A two-pronged approach was then proposed for the overall management of CECs. Light-driven oxidation processes, namely photo/Fenton, photocatalysis, photolysis, UV/Ozone were discussed. Advances to overcome current limitations in these light-driven processes were proposed, focusing on recent trends and innovations. Light-based detection methodology was also discussed for the management of CECs. Lastly, a cost–benefit analysis on various light-based processes was conducted to access the suitability for CECs degradation. It was found that the UV/Ozone process might not be suitable due to the complication with pH adjustments and limited light wavelength. It was found that EEO values were in this sequence: UV only > UV/combination > photocatalyst > UV/O3 > UV/Fenton > solar/Fenton. The solar/Fenton process has the least computed EEO < 5 kWh m−3 and great potential for further development. Newer innovations such as solar/catalyst can also be explored with potentially lower EEO values.

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Section: Uv/oxidantmentioning

confidence: 94%

Emerging Contaminants: An Overview of Recent Trends for Their Treatment and Management Using Light-Driven Processes

Lee

Lim

Loh

et al. 2021

Water

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“…Consequently, the secondary wastewater effluents of conventional activated sludge treatment still contain numerous MPs. In order to abate the presence of these compounds, advanced oxidation processes such as (i) UV/H 2 O 2 [220], UV/chlorine [221] and/or ozonebased applications (O 3 /H 2 O 2 and O 3 /UV) [222], and (ii) photo Fenton processes [223] and various electro-catalytic processes [224] are applied (or tested at pilot scale). Hence, the AOPs are found to fill the gap between the conventional physico-chemical and biological treatments and the limits set by environmental regulations (i.e., the degree of contamination of the treated wastewater determined by its end/use or site of discharge) [225].…”

Section: In-and Outputsmentioning

confidence: 99%

Nature-Based Units as Building Blocks for Resource Recovery Systems in Cities

Hullebusch

Bani

Carvalho³

et al. 2021

Water

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Cities are producers of high quantities of secondary liquid and solid streams that are still poorly utilized within urban systems. In order to tackle this issue, there has been an ever-growing push for more efficient resource management and waste prevention in urban areas, following the concept of a circular economy. This review paper provides a characterization of urban solid and liquid resource flows (including water, nutrients, metals, potential energy, and organics), which pass through selected nature-based solutions (NBS) and supporting units (SU), expanding on that characterization through the study of existing cases. In particular, this paper presents the currently implemented NBS units for resource recovery, the applicable solid and liquid urban waste streams and the SU dedicated to increasing the quality and minimizing hazards of specific streams at the source level (e.g., concentrated fertilizers, disinfected recovered products). The recovery efficiency of systems, where NBS and SU are combined, operated at a micro- or meso-scale and applied at technology readiness levels higher than 5, is reviewed. The importance of collection and transport infrastructure, treatment and recovery technology, and (urban) agricultural or urban green reuse on the quantity and quality of input and output materials are discussed, also regarding the current main circularity and application challenges.

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“…In order to eliminate contaminants of emerging concern (CECs), Cerreta, Roccamante, Oller, Malato, and Rizzo (2019) applied homogeneous AOP UV‐C/free chlorine (UV‐C/FC) for urban wastewater treatment plants (UWTPs) at a pilot scale. In natural waters, there was a 90% decrease of CECs after 15 min by UV‐C/FC and 30 min by UV‐C/H 2 O 2 .…”

Section: Chemical Processesmentioning

confidence: 99%

Physico‐chemical processes

Yu¹,

Yao²,

Pan³

et al. 2020

Water Environment Research

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By summarizing 187 relevant research articles published in 2019, the review is focused on the research progress of physicochemical processes for wastewater treatment. This review divides into two sections, physical processes and chemical processes. The physical processes section includes three subsections , that is, adsorption, granular filtration, and dissolved air flotation, whereas the chemical processes section has five subsections , that is, coagulation/flocculation, advanced oxidation processes, electrochemical, capacitive deionization, and ion exchange.

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Contaminants of emerging concern removal from real wastewater by UV/free chlorine process: A comparison with solar/free chlorine and UV/H2O2 at pilot scale

Cited by 46 publications

References 48 publications

Emerging Contaminants: An Overview of Recent Trends for Their Treatment and Management Using Light-Driven Processes

Emerging Contaminants: An Overview of Recent Trends for Their Treatment and Management Using Light-Driven Processes

Nature-Based Units as Building Blocks for Resource Recovery Systems in Cities

Physico‐chemical processes

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