Oxidation of Mixed Active Pharmaceutical Ingredients in Biologically Treated Wastewater by ClO2

Gerly Moradas, Jerker Fick, Anna Ledin, Jes la Cour Jansen, Henrik Rasmus Andersen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

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Abstract

Biologically treated wastewater containing a mixture of 53 active pharmaceutical ingredients (APIs)was treated with 0-20 mg/l chlorine dioxide (ClO2) solution. Wastewater effluents were taken from two wastewater treatment plants in Sweden, one with (low COD) and one without (high COD) extended nitrogen removal. The removal of the APIs varied from no significant removal at the highest dose of ClO2 (20 mg/l) to 90% removal at a dose of 0.5 mg/l of the oxidant. From the low COD effluent, only 4 APIs were removed by more than 90% at the lowest oxidant dose of 0.5 mg/l whereas most of the APIs were removed at 5 mg/l ClO2 dose. Removal of the same APIs from the high COD effluent was observed when the ClO2 dose was increased to 1.25 mg/l and an increase in API removal only after treatment with 8 mg/l ClO2. This illustrates that treatment of wastewater effluents with chlorine dioxide has potential to remove pharmaceuticals traces from wastewater treatment plant effluents.
Original languageEnglish
Title of host publicationIOA IUVA World Congress & Exhibition
Publication date2011
Publication statusPublished - 2011
Event2nd joint IOA and IUVA World Congress & Exhibition - Paris, France
Duration: 23 May 201127 May 2011
Conference number: 2
http://ioa-ea3g.org/congress/

Conference

Conference2nd joint IOA and IUVA World Congress & Exhibition
Number2
CountryFrance
CityParis
Period23/05/201127/05/2011
Internet address

Keywords

  • Chlorine dioxide
  • Wastewater effluent
  • Pharmaceuticals

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