Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2019 Jun 15;372:94-102.
doi: 10.1016/j.jhazmat.2018.04.044. Epub 2018 Apr 21.

Intensification of UV-C Tertiary Treatment: Disinfection and Removal of Micropollutants by Sulfate Radical Based Advanced Oxidation Processes

Affiliations

Intensification of UV-C Tertiary Treatment: Disinfection and Removal of Micropollutants by Sulfate Radical Based Advanced Oxidation Processes

J Rodríguez-Chueca et al. J Hazard Mater. .

Abstract

This study explores the enhancement of UV-C tertiary treatment by sulfate radical based Advanced Oxidation Processes (SR-AOPs), including photolytic activation of peroxymonosulfate (PMS) and persulfate (PS) and their photocatalytic activation using Fe(II). Their efficiency was assessed both for the inactivation of microorganisms and the removal or micropollutants (MPs) in real wastewater treatment plant effluents. Under the studied experimental range (UV-C dose 5.7-57 J/L; UV-C contact time 3 to 28 s), the photolysis of PMS and PS (0.01 mM) increased up to 25% the bacterial removal regarding to UV-C system. The photolytic activation of PMS led to the total inactivation of bacteria (≈ 5.70 log) with the highest UV-C dose (57 J/L). However, these conditions were insufficient to remove the MPs, being required oxidant's dosages of 5 mM to remove above 90% of carbamazepine, diclofenac, atenolol and triclosan. The best efficiencies were achieved by the combination of PMS or PS with Fe(II), leading to the total removal of the MPs using a low UV-C dosage (19 J/L), UV-C contact time (9 s) and reagent's dosages (0.5 mM). Finally, high mineralization was reached (>50%) with photocatalytic activation of PMS and PS even with low reagent's dosages.

Keywords: Disinfection; Micropollutants; Real wastewater; SR-AOPs; UV-C.

Similar articles

See all similar articles

Cited by 2 articles

Publication types

LinkOut - more resources

Feedback