Techno-economic evaluation and comparison of PAC-MBR and ozonation-UV revamping for organic micro-pollutants removal from urban reclaimed wastewater

Echevarría, C.; Valderrama, César; Cortina, José Luis; Martín, I. San; Arnaldos, Marina; Bernat, Xavier; Cal, Agustina de la; Boleda, Ma Rosa; Vega, A.; Teuler, A.; Castellví, E.

doi:10.1016/j.scitotenv.2019.03.365

Cited by 47 publications

(10 citation statements)

References 51 publications

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“…The change in water quality can most intuitively reflect the effects of functional microorganisms [20]. In this experiment, functional denitrification microorganisms were first added to the reactor.…”

Section: Discussionmentioning

confidence: 99%

Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal

Zhang

Fang

et al. 2021

Water

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The efficient removal of carbon (COD) and nitrogen (NH3-N) is vital to improving tailwater from municipal wastewater treatment plants. In this study, denitrification and decarburization bacteria with stable removal efficiencies were introduced into a membrane bioreactor (MBR) for 45 days of field experiments in a QJ Wastewater Treatment Plant (Hangzhou, China) to enhance carbon and nitrogen removal. After adding the decarbonization microorganisms into the denitrification reactor, COD removal increased from 31.2% to 80.2%, while compared to the same MBR with only denitrification microorganisms, the removal efficiency of NH3-N was greatly increased from 76.8% to 98.6%. The results of microbial analysis showed that the cooccurrence of Proteobacteria and Bacillus with high abundance and diverse bacteria, such as Chloroflexi, with autotrophic decarburization functions might account for the synchronous high removal efficiency for NH3-N and COD. This technology could provide a reference for industrial-scale wastewater treatment with the goal of simultaneous nitrogen and carbon removal.

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Section: Discussionmentioning

confidence: 99%

Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal

Zhang

Fang

et al. 2021

Water

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“…Currently, many different methods for the treatment of wastewater from healthcare facilities are being researched, which often combine chemical and biological degradation procedures in different ways [ 63 , 64 , 65 ]. A combination of ozonation with active sorbent (e.g., activated carbon), UV-C and H 2 O 2 , MBR (membrane bioreactor), and AOPs (advanced oxidation processes) dominates [ 52 , 66 , 67 , 68 , 69 ]. The historically used methods for disinfection of these types of waters are chlorination and UV-C radiation [ 69 , 70 ].…”

Section: Innovative Processes Efficient In the Treatment Of Wastewater From Healthcare Facilitiesmentioning

confidence: 99%

Hospital Wastewater—Source of Specific Micropollutants, Antibiotic-Resistant Microorganisms, Viruses, and Their Elimination

et al. 2021

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Municipal wastewaters can generally provide real-time information on drug consumption, the incidence of specific diseases, or establish exposure to certain agents and determine some lifestyle consequences. From this point of view, wastewater-based epidemiology represents a modern diagnostic tool for describing the health status of a certain part of the population in a specific region. Hospital wastewater is a complex mixture of pharmaceuticals, illegal drugs, and their metabolites as well as different susceptible and antibiotic-resistant microorganisms, including viruses. Many studies pointed out that wastewater from healthcare facilities (including hospital wastewater), significantly contributes to higher loads of micropollutants, including bacteria and viruses, in municipal wastewater. In addition, such a mixture can increase the selective pressure on bacteria, thus contributing to the development and dissemination of antimicrobial resistance. Because many pharmaceuticals, drugs, and microorganisms can pass through wastewater treatment plants without any significant change in their structure and toxicity and enter surface waters, treatment technologies need to be improved. This short review summarizes the recent knowledge from studies on micropollutants, pathogens, antibiotic-resistant bacteria, and viruses (including SARS-CoV-2) in wastewater from healthcare facilities. It also proposes several possibilities for improving the wastewater treatment process in terms of efficiency as well as economy.

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“…A life cycle assessment (LCA) of the ECUVal process showed a significant reduction in environmental impacts from the textile industry. Echevarría et al (2019) investigated the removal of wastewater-borne organic micropollutants in reclaimed water used for irrigation and found it increased to over 85 ± 2% when the conventional activated sludge-basic water reclamation process was upgraded by adding an ozonation-UV step as post-treatment. The removal was over 75 ± 5% when a powdered activated carbon adsorbent was added as a pretreatment step for UF in a hybrid water reclamation scheme based on MBR processes.…”

Section: Integrated Processesmentioning

confidence: 99%

Water reclamation and reuse

Zhang

Sun

Liu

2020

Water Environment Research

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Literature published in 2019 pertinent to water reclamation and reuse has been classified into five sections: safe reuse, treatment technologies, management, assessment, and case studies. Membranes have been widely applied in integrated processes to polish secondary effluent and achieve high-quality reclaimed water. Increased efforts have also been made to facilitate feasible and safe water reuse.

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Techno-economic evaluation and comparison of PAC-MBR and ozonation-UV revamping for organic micro-pollutants removal from urban reclaimed wastewater

Cited by 47 publications

References 51 publications

Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal

Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal

Hospital Wastewater—Source of Specific Micropollutants, Antibiotic-Resistant Microorganisms, Viruses, and Their Elimination

Water reclamation and reuse

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