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Effect of full-scale ozonation and pilot-scale granular activated carbon on the removal of biocides, antimycotics and antibiotics in a sewage treatment plant
Umea Univ, Dept Chem, SE-90187 Umea, Sweden..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Industrial Biotechnology.
Umea Univ, Dept Chem, SE-90187 Umea, Sweden..
Umea Univ, Dept Chem, SE-90187 Umea, Sweden..
2019 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 649, p. 1117-1123Article in journal (Refereed) Published
Abstract [en]

Several micropollutants show low removal efficiencies in conventional sewage treatment plants, and therefore enter the aquatic environment. To reduce the levels of micropollutants in sewage effluent, and thereby the effects on biota, a number of extra treatment steps are currently being evaluated. Two such techniques are ozonation and adsorption onto activated carbon. In this study, we investigated the efficiency of Sweden's first full-scale ozonation treatment plant at removing a number of antibiotics, antimycotics and biocides. The effect of adding granular activated carbon (GAC) on a pilot scale and pilot-scale ozonation were also evaluated. The conventional treatment (13,000 PE) with the add-on of full-scale ozonation (0.55 g O-3/g Total organic carbon (TOC)) was able to remove most of the studied compounds (>90%), except for benzotriazoles and fluconazole (<50%). Adsorption on GAC on a pilot scale showed a higher removal efficiency than ozonation (>80% for all studied compounds). Three types of GAC were evaluated and shown to have different removal efficiencies. In particular, the GAC with the smallest particle sizes exhibited the highest removal efficiency. The results demonstrate that it is important to select an appropriate type of carbon to achieve the removal goal for specific target compounds.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 649, p. 1117-1123
Keywords [en]
Biocides, Antibiotics, Ozonation, GAC, Removal efficiency, Wastewater
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-237079DOI: 10.1016/j.scitotenv.2018.08.382ISI: 000446076500106PubMedID: 30308883Scopus ID: 2-s2.0-85052640940OAI: oai:DiVA.org:kth-237079DiVA, id: diva2:1258181
Funder
Mistra - The Swedish Foundation for Strategic Environmental ResearchSwedish Research Council FormasSwedish Energy Agency
Note

QC 20181024

Available from: 2018-10-24 Created: 2018-10-24 Last updated: 2018-10-24Bibliographically approved

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