Photocatalytic ozonation in an immersion rotary body reactor for the removal of micro-pollutants from the effluent of wastewater treatment plants
- Carrier-bound titanium dioxide catalysts were used in a photocatalytic ozonation reactor for the degradation of micro-pollutants in real wastewater. A photocatalytic immersion rotary body reactor with a 36-cm disk diameter was used, and was irradiated using UV-A light-emitting diodes. The rotating disks were covered with catalysts based on stainless steel grids coated with titanium dioxide. TheCarrier-bound titanium dioxide catalysts were used in a photocatalytic ozonation reactor for the degradation of micro-pollutants in real wastewater. A photocatalytic immersion rotary body reactor with a 36-cm disk diameter was used, and was irradiated using UV-A light-emitting diodes. The rotating disks were covered with catalysts based on stainless steel grids coated with titanium dioxide. The dosing of ozone was carried out through the liquid phase via an external enrichment and a supply system transverse to the flow direction. The influence of irradiation power and ozone dose on the degradation rate for photocatalytic ozonation was investigated. In addition, the performance of the individual processes photocatalysis and ozonation were studied. The degradation kinetics of the parent compounds were determined using liquid chromatography tandem mass spectrometry. First-order kinetics were determined for photocatalysis and photocatalytic ozonation. A maximum reaction rate of the reactor was determined, which could be achieved by both photocatalysis and photocatalytic ozonation. At a dosage of 0.4 mg /mg DOC, the maximum reaction rate could be achieved using 75% of the irradiation power used for sole photocatalysis, allowing increases in the energetic efficiency of photocatalytic wastewater treatment processes. The process of photocatalytic ozonation is suitable to remove a wide spectrum of micro-pollutants from wastewater.…
Dokumentart: | Artikel (Wissenschaftlicher) |
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Verfasserangaben: | Simon MehlingORCiD, Tobias SchnabelORCiDGND, Prof. Dr.-Ing. Jörg LondongORCiDGND |
DOI (Zitierlink): | https://doi.org/10.2166/wst.2021.617Zitierlink |
URN (Zitierlink): | https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20220209-45865Zitierlink |
URL: | https://iwaponline.com/wst/article/85/1/535/85800/Photocatalytic-ozonation-in-an-immersion-rotary |
Titel des übergeordneten Werkes (Englisch): | Water Science & Technology |
Verlag: | IWA Publishing |
Verlagsort: | London |
Sprache: | Englisch |
Datum der Veröffentlichung (online): | 08.02.2022 |
Datum der Erstveröffentlichung: | 10.12.2021 |
Datum der Freischaltung: | 09.02.2022 |
Veröffentlichende Institution: | Bauhaus-Universität Weimar |
Institute und Partnereinrichtugen: | Fakultät Bauingenieurwesen / Professur Siedlungswasserwirtschaft |
Jahrgang: | 2022 |
Ausgabe / Heft: | volume 85, issue 1 |
Seitenzahl: | 14 |
Erste Seite: | 535 |
Letzte Seite: | 548 |
Freies Schlagwort / Tag: | anthropogenic micro-pollutants; photocatalysis; photocatalytic ozonation; titan dioxide; wastewater treatment |
GND-Schlagwort: | Abwasserreinigung; Fotokatalyse; Mikroverunreinigungen |
DDC-Klassifikation: | 600 Technik, Medizin, angewandte Wissenschaften / 620 Ingenieurwissenschaften / 628 Sanitär- und Kommunaltechnik; Umwelttechnik |
BKL-Klassifikation: | 56 Bauwesen / 56.35 Siedlungswasserwirtschaft, industrielle Wasserwirtschaft |
58 Chemische Technik, Umwelttechnik, verschiedene Techno- / 58.51 Abwassertechnik, Wasseraufbereitung | |
Lizenz (Deutsch): | Creative Commons 4.0 - Namensnennung (CC BY 4.0) |