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Suman Kharel

Ph.d.-studerende, Videnskabelig assistent

Suman Kharel


PhD project: Removal, Degradation, Transformation of Organic Micropollutants in Advanced Wastewater Treatment (RDTOMA)

University: Aarhus University
Department: Department of Environmental Science

Section: MITO

Research group:
Supervisor(s):  Prof. Kai Bester, Department of Environmental Science, Aarhus University
Project term: 01.03.2018 – 28.02.2021
Master’s degree:  MSc in Water Science, specialization in Water Chemistry, University of Duisburg-Essen, Germany



Globally, a huge amount of pharmaceuticals are distributed and consumed per year. Even after passing through the treatment plant, a proximate water body is continuously supplied with trace amount of pharmaceutical and illicit drugs due to privation in precise sewage treatment. Its concentration may vary from few ngL-1 to several µgL-1 in eminent water bodies thus echoes the deteriorating quality of water.

Unlike conventional treatment methods, advanced oxidation processes (AOPs) e.g. Ozonation are recognized tools degrade these organic pharmaceuticals


This study focus on advance oxidation technology as a viable option for the removal of active pharmaceuticals ingredients; evaluating and optimizing process for a full-scale ozonation system at the wastewater treatment plant. Furthermore, the fate of transformation products will be studied as a function of specific ozone dose.



The outcome of this study will be useful on gaining knowledge on different process parameter used for full-scale operation of ozonation plant. It will also provide new insight on the fate transformation products formed during ozonation.


  • Kalundborg Utility, Denmark
  • The Berlin Centre of Competence for Water (KWB), Germany
  • The Tekniska Verken i Linköping AB in Sweden
  • Lund University, Sweden
  • Vienna University of Technology, Austria
  • University of Castilla–La Mancha, Spain

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