Department Environmental Chemistry

Contaminants in wastewater treatment

Micropollutants from urban sources (e.g. pharmaceuticals, personal care products, industrial chemicals) enter the aquatic environment via municipal wastewater. We are investigating their mass fluxes from the usage, their behavior during wastewater treatment and their environmental fate in the water cycle. We are mainly interested in the wastewater treatment processes and in strategies, how to remove these organic micropollutants in conventional and advanced treatment with ozone and activated carbon.

Scientific assistant and technician

Andreas MaccagnanTechnicianTel. +41 58 765 5978Send Mail
Christelle OltramareScientific AssistantTel. +41 58 765 5761Send Mail
Baptiste ClercScientific AssistantTel. +41 58 765 6764Send Mail
Elia CeppiMaster studentTel. +41 58 765 6470Send Mail
Yves EberhardMaster studentTel. +41 58 765 6759Send Mail


Dr. Christa McArdellSenior scientist / group leaderTel. +41 58 765 5483Send Mail


Dr. Jennifer ScholleePostdoctoral scientistTel. +41 58 765 5512Send Mail
Dr. Tarek ManasfiPostdoctoral ScientistTel. +41 58 765 6437Send Mail

Current publications

Hagemann, N.; Schmidt, H.-P.; Kägi, R.; Böhler, M.; Sigmund, G.; Maccagnan, A.; McArdell, C. S.; Bucheli, T. D. (2020) Wood-based activated biochar to eliminate organic micropollutants from biologically treated wastewater, Science of the Total Environment, 730, 138417 (11 pp.), doi:10.1016/j.scitotenv.2020.138417, Institutional Repository
Köpping, I.; McArdell, C. S.; Borowska, E.; Böhler, M. A.; Udert, K. M. (2020) Removal of pharmaceuticals from nitrified urine by adsorption on granular activated carbon, Water Research X, 9, 100057 (10 pp.), doi:10.1016/j.wroa.2020.100057, Institutional Repository
Böhler, M.; Joss, A.; McArdell, C.; Meier, A. (2020) Hinweise zur Planung und Auslegung von diskontinuierlich gespülten GAK-Filtern zur Elimination organischer Spurenstoffe aus kommunalem Abwasser. Konsenspapier zum Ergebnis des Workshops vom 9.12.2019 an der Eawag, 5 p, Institutional Repository
Bourgin, M.; Borowska, E.; Helbing, J.; Hollender, J.; Kaiser, H.-P.; Kienle, C.; McArdell, C. S.; Simon, E.; von Gunten, U. (2017) Effect of operational and water quality parameters on conventional ozonation and the advanced oxidation process O3/H2O2: kinetics of micropollutant abatement, transformation product and bromate formation in a surface water, Water Research, 122, 234-245, doi:10.1016/j.watres.2017.05.018, Institutional Repository
Schollée, J. E.; Bourgin, M.; von Gunten, U.; McArdell, C. S.; Hollender, J. (2018) Non-target screening to trace ozonation transformation products in a wastewater treatment train including different post-treatments, Water Research, 142, 267-278, doi:10.1016/j.watres.2018.05.045, Institutional Repository
Bourgin, M.; Beck, B.; Boehler, M.; Borowska, E.; Fleiner, J.; Salhi, E.; Teichler, R.; von Gunten, U.; Siegrist, H.; McArdell, C. S. (2018) Evaluation of a full-scale wastewater treatment plant upgraded with ozonation and biological post-treatments: abatement of micropollutants, formation of transformation products and oxidation by-products, Water Research, 129, 486-498, doi:10.1016/j.watres.2017.10.036, Institutional Repository

Current projects

Ozonation is one of the treatments used in wastewater treatment plants (WWTPs) to remove MPs, reducing their discharge to the aquatic environment...
Formation and fate of transformation products in water treatment with ozone and biological post-treatment
Characterization of wastewater treatment with suspect und non-target screening for the evaluation of ozonation and activated carbon treatment
Pilot scale advanced treatment of wastewater with granular activated carbon (GAC) and combined with ozonation (O3/GAC) at WWTP Glarnerland

Terminated projects

  • Ozonation and different biological post-treatments at WWTP Neugut (DEMEAU, ReTREAT)
  • Ozonation and GAK treatment at WWTP Bülach
  • Decentralized wastewater treatment at hospitals - hospital wastewater project
  • Fate of antibiotics and antibiotic resistance in wastewater treatment - ResistFlow
  • Treatment of urine for the production of fertilizer -  VUNA project
  • Infiltration of treated wastewater into groundwater - RECLAIM Water