Pilot tests as basis for the design, implementation and operation of a future full-scale oxidation plant completing the existing sewage treatment in Linköping, Sweden, were performed. Using an ozonation step between bio-sedimentation and post-denitrification processes, the primary goal was the removal of the highest priority substances to effluent water levels that will not cause adverse effects in the recipient considering the natural dilution. The study included initial emission screenings, dose control trials, treatment performance studies and eco-toxicity studies. At an ozone dose of 5 mg O3/L, most substances could be removed. Ecotoxicological tests showed no negative effect for the tested ozone doses. High levels of oxygen into the denitrification could be rapidly reduced in the biology. The number of bacteria in the treated water could be significantly reduced even at relatively low ozone doses. Based on these results, the planning for the full-scale implementation of the treatment system was initiated in 2015.
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Research Article|
January 27 2016
Removal of pharmaceutical residues using ozonation as intermediate process step at Linköping WWTP, Sweden Available to Purchase
Christian Baresel;
1IVL Swedish Environmental Research Institute, Valhallavägen 81, 10031 Stockholm, Sweden
E-mail: [email protected]
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Jonas Malmborg;
Jonas Malmborg
2Tekniska verken i Linköping AB, Box 1500, 58115 Linköping, Sweden
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Mats Ek;
Mats Ek
1IVL Swedish Environmental Research Institute, Valhallavägen 81, 10031 Stockholm, Sweden
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Robert Sehlén
Robert Sehlén
2Tekniska verken i Linköping AB, Box 1500, 58115 Linköping, Sweden
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Water Sci Technol (2016) 73 (8): 2017–2024.
Article history
Received:
October 20 2015
Accepted:
January 12 2016
Citation
Christian Baresel, Jonas Malmborg, Mats Ek, Robert Sehlén; Removal of pharmaceutical residues using ozonation as intermediate process step at Linköping WWTP, Sweden. Water Sci Technol 27 April 2016; 73 (8): 2017–2024. doi: https://doi.org/10.2166/wst.2016.045
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