Micropollutant degradation, bacterial inactivation and regrowth risk in wastewater effluents: Influence of the secondary (pre)treatment on the efficiency of Advanced Oxidation Processes

2016 ◽  
Vol 102 ◽  
pp. 505-515 ◽  
Author(s):  
Stefanos Giannakis ◽  
Margaux Voumard ◽  
Dominique Grandjean ◽  
Anoys Magnet ◽  
Luiz Felippe De Alencastro ◽  
...  
Keyword(s):  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Bacterial Inactivation ◽  
Oxidation Processes ◽  
Pre Treatment ◽  
Wastewater Effluents

scholarly journals Simultaneous Disinfection and Organic Microcontaminant Removal by UVC-LED-Driven Advanced Oxidation Processes

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1507
Author(s):  
Sara Miralles-Cuevas ◽  
Irene De la Obra ◽  
Elizabeth Gualda-Alonso ◽  
Paula Soriano-Molina ◽  
José L. Casas López ◽  
...  
Keyword(s):  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Scaling Up ◽  
Bactericidal Effect ◽  
Secondary Effluent ◽  
Bacterial Inactivation ◽  
Bacterial Regrowth ◽  
Oxidation Processes ◽  
Bacteria Inactivation ◽  
Simulated Wastewater

This work presents the comparison of four advanced oxidation processes driven by UVC-LED radiation (278 nm—2 W/m2) for simultaneous bacteria inactivation (Escherichia coli—106 CFU/mL) and microcontaminant removal (imidacloprid—50 µg/L) in simulated wastewater secondary effluent. To this end, the activation of H2O2 and S2O82− as precursors of HO• and SO4•−, respectively, by UVC-LED and UVC-LED/Fe3+–NTA (ferric nitrilotriacetate at 0.1 mM) has been studied at different oxidant concentrations. For the purpose of comparison, conventional chlorination was used as the baseline along with bacterial regrowth 24 h after treatment. Disinfection was achieved within the first 30 min in all of the processes, mainly due to the bactericidal effect of UVC-LED radiation. UVC-LED/H2O2 did not substantially affect imidacloprid removal due to the low HO• generation by UVC irradiation at 278 nm, while more than 80% imidacloprid removal was achieved by the UVC-LED/S2O82−, UVC-LED/Fe3+–NTA/S2O82−, and UVC-LED/Fe3+–NTA/H2O2 processes. The most efficient concentration of both oxidants for the simultaneous disinfection and microcontaminant removal was 1.47 mM. Chlorination was the most effective treatment for bacterial inactivation without imidacloprid removal. These findings are relevant for scaling up UVC-LED photoreactors for tertiary wastewater treatment aimed at removing bacteria and microcontaminants.

Effect of advanced oxidation processes on the toxicity of municipal landfill leachates

2004 ◽  
Vol 49 (4) ◽  
pp. 273-277 ◽  
Author(s):  
B. Slomczynska ◽  
J. Wasowski ◽  
T. Slomczynski
Keyword(s):  
Organic Compounds ◽  
Advanced Oxidation Processes ◽  
Vibrio Fischeri ◽  
Advanced Oxidation ◽  
Optimal Conditions ◽  
Toxicity Evaluation ◽  
Landfill Leachates ◽  
Oxidation Processes ◽  
Municipal Landfill ◽  
Pre Treatment

The aim of the present study was to assess the effect of advanced oxidation processes (AOPs) (oxidation ozone and peroxide/ozone) on the toxicity of leachates from municipal landfill for Warsaw, Poland, using a battery of tests. AOPs used to pre-treat leachates were carried out in laboratory conditions after their coagulation with the use of FeCl3. The effects of the pre-treatment of leachates using the method of coagulation with FeCl3 depended on the concentration of organic compounds and with optimal conditions of the process ranged from 40 to 70%. Further pre-treatment of the leachates after coagulation, involving the use of oxidation with O3 and H2O2/O3, did not cause significant decrease of leachate toxicity. The data of this study demonstrated the usefulness of the battery of tests using Daphnia magna, Artemia franciscana, Scenedesmus quadricauda and Vibrio fischeri for the toxicity evaluation of raw and pre-treated leachates.

Sonochemical Advanced Oxidation Processes for the Removal of Pharmaceuticals in Wastewater Effluents

2020 ◽  
Author(s):  
Efraím A. Serna-Galvis ◽  
Judy Lee ◽  
Félix Hernández ◽  
Ana María Botero-Coy ◽  
Ricardo A. Torres-Palma
Keyword(s):  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Oxidation Processes ◽  
Wastewater Effluents

Is the combination of nanofiltration membranes and AOPs for removing microcontaminants cost effective in real municipal wastewater effluents?

2016 ◽  
Vol 2 (3) ◽  
pp. 511-520 ◽  
Author(s):  
S. Miralles-Cuevas ◽  
I. Oller ◽  
A. Agüera ◽  
J. A. Sánchez Pérez ◽  
Ricardo Sánchez-Moreno ◽  
...  
Keyword(s):  
Advanced Oxidation Processes ◽  
Municipal Wastewater ◽  
Advanced Oxidation ◽  
Cost Effective ◽  
Economic Assessment ◽  
Nanofiltration Membranes ◽  
Oxidation Processes ◽  
Wastewater Effluents

Economic assessment of treatment of municipal wastewater plant effluent containing microcontaminants based on the combination of nanofiltration and advanced oxidation processes (EDDS-assisted solar photo-Fenton or ozonation).

Advanced Oxidation Processes for Water and Wastewater Treatment

2019 ◽  
pp. 46-69 ◽  
Author(s):  
Ahmed Hisham Hilles ◽  
Salem S. Abu Amr ◽  
Hamidi Abdul Aziz ◽  
Mohammed J. K. Bashir
Keyword(s):  
Hydrogen Peroxide ◽  
Wastewater Treatment ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Fenton Oxidation ◽  
Water And Wastewater Treatment ◽  
Oxidation Processes ◽  
Water And Wastewater ◽  
Persulfate Activation ◽  
Pre Treatment

Advanced oxidation processes (AOPs) have recently received attraction for treatment of different wastewaters. AOPs have an ability to oxidize a high quantity of refractory organic matters, traceable organic, or to increase wastewater biodegradability as a pre-treatment prior to an ensuing biological treatment. In this chapter, the fundamental mechanisms of different AOPs such as ozonation, hydrogen peroxide, UV, persulfate, and Fenton oxidation are summarized. The combination of different oxidation processes such as O3/H2O2, O3/UV, O3/Fenton+, O3/persulfate are evaluated. Several persulfate activation techniques are also summarized.

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