Engineering Experts

Nadja Hvala

Department of Systems and Control
Jozef Stefan Institute


Dr. Nadja Hvala is currently working as a Researhcer in the Department of Department of Systems and Control, Jozef Stefan Institute , Slovenia. He/she is serving as an editorial member and reviewer of several international reputed journals. He/ She has successfully completed his Administrative responsibilities.

Research Interest

"modelling, simulation and control design for chemical and bio-chemical processes modelling, simulation and control of wastewater systems"  


  • Vrečko D, Hvala N, Stare A, Burica O, Stražar M, Levstek M, Cerar P, PodbevÅ¡ek S. Improvement of ammonia removal in activated sludge process with feedforward-feedback aeration controllers. Water Science and Technology. 2006 Feb 1;53(4-5):125-32.

  • Vrečko D, Hvala N, Carlsson B. Feedforward-feedback control of an activated sludge process: a simulation study. Water Science and Technology. 2003 Jun 1;47(12):19-26.

  • Stare A, Vrečko D, Hvala N, Strmčnik S. Comparison of control strategies for nitrogen removal in an activated sludge process in terms of operating costs: a simulation study. Water research. 2007 May 31;41(9):2004-14.

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