Intensification of UV-C tertiary treatment: Disinfection and removal of micropollutants by sulfate radical based Advanced Oxidation Processes
| Autor: | Javier Marugán, R.-J. Lepistö, Jorge Rodríguez-Chueca, C. García-Cañibano, Angel Encinas, Jukka Pellinen |
|---|---|
| Přispěvatelé: | University Management, Environmental Sciences |
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
WATER TREATMENT PLANTS PHARMACEUTICALS Health Toxicology and Mutagenesis 0211 other engineering and technologies HYDROXYL RADICALS 02 engineering and technology 010501 environmental sciences 01 natural sciences Mineralization (biology) URBAN WASTE-WATER ACTIVATION chemistry.chemical_compound Environmental Chemistry UV-C Waste Management and Disposal Effluent 1172 Environmental sciences 0105 earth and related environmental sciences PHOTOCATALYTIC DISINFECTION 021110 strategic defence & security studies Sulfate radical PHOTO-FENTON SR-AOPs DEGRADATION SOLAR DISINFECTION Persulfate Pollution 6. Clean water Triclosan Disinfection Real wastewater chemistry ESCHERICHIA-COLI Reagent Photocatalysis Micropollutants Sewage treatment Nuclear chemistry |
| Zdroj: | Journal of Hazardous Materials. 372:94-102 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2018.04.044 |
| Popis: | 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 (approximate to 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. |
| Databáze: | OpenAIRE |
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