Influence of operational conditions and wastewater properties on the removal of organic micropollutants through ozonation

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:286

Article

Ekblad, M.^1,2  Juarez, R.^1,2  Falas, P.¹  Bester, K.³  Hagman, M.¹  Cimbritz, M.¹ 

[1] Lund Univ, Dept Chem Engn, POB 124, SE-22100 Lund, Sweden

[2] Sweden Water Res AB, Ideon Sci Pk,Scheelevagen 15, Lund, Sweden

[3] Aarhus Univ, Dept Environm Sci, Frederiksborgsvej 399, DK-4000 Roskilde, Denmark

关键词: Contaminants of emerging concern;    Ozone oxidation;    Pharmaceuticals;   

DOI  :  10.1016/j.jenvman.2021.112205

来源: Elsevier

【 摘 要 】

The objective of this study was to evaluate the influence of operational conditions and wastewater properties on the removal of pharmaceuticals, contrast media and antibiotics through ozonation, in order to facilitate the optimization of treatment and its implementation on a full scale. Pilot-scale ozone oxidation trials were performed on treated wastewater, before and after post-precipitation, over a seven-month period, including summer and winter months. Hydraulic retention times as short as 7 min were found to be sufficient for organic micropollutant removal. A short hydraulic retention time reduces both investment costs and land use. Neither the choice of ozone dispersion method, a static mixer or a Venturi injector, nor the wastewater temperature had any significant effect on the removal efficiency of organic micropollutants, however, higher removal was achieved after on-site post-precipitation with aluminum chloride.

【 授权许可】

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