Keywords
Aquaculture, RAS, water quality, microbial activity, biofiltration, nitrification kinetics, biofilm, disinfection, formalin, hydrogen peroxide, peracetic acid
Senior researcher with a focus on water quality aspects in aquaculture. Since 2002, the research has included applied research and extensive collaboration with commercial fish farms and RAS in Denmark. The work includes e.g.:
- Testing of water quality, development of methods to monitor water quality and strategies to improve or control water quality
- Optimizing chemical disinfection and implementing peracetic acid and hydrogen peroxide as alternative agents to formalin
- Biofiltration, assessment of nitrification performance and kinetics and documentation
- Assessment of factors affecting nitrification performance (type of media, effects of disinfectants, salinity, temperature, start-up and backwashing etc.
- Test, develop and implement innovative techniques to control the microbial carrying capacity in RAS (foam fractionation in FW, sponge biomedia, ozonation)
- Development of new and innovative simple methods to monitor microbial water quality and assess biofilm activity.
Collaboration with Ultra Aqua, Mycometer, ElectroCell, CM Aqua, Water ApS, Oxyguard, Billund Aquaculture, AkvaGroup, KSK Aqua, Levapor, PK Plast, Biomar, AquaPri and several commercial fish farms and RAS companies.
Research collaboration with Danish RAS companies and suppliers, the Danish Aquaculture Organization, the Danish Environmental Protection Agency, fish farmers and veterinarians. Research collaboration with the University of Aalborg, Copenhagen University, DTU Environment, and international research collaboration with colleagues from the US (TCFFI, VW & USDA, AR), Germany (IGB, Berlin) Norway (NTNU, Trondheim; NMBU, Ås, UiT, Tromsø; Nord Uni., Bodø; NIVA, Nofima) and Tanzania.