Development of methods for characterization of wastewater (Contact: Ann Marie Eilersen and Ahmed S. Ucisik)
A thorough characterization of the organic material in wastewater is a prerequisite for evaluating the options for treatment and reuse. It is also the basis for an assessment of the efficiency of a given treatment. The methods for characterization have to be relevant and sensitive for the processes in the treatment plant, i.e. removal of organic matter and nutrients. The methods also have to be simple and inexpensive. In wastewater, a range of chemicals are present, chemical analysis may be insufficient and expensive as a control instrument. Instead, physical and direct toxicity measurements are preferable to capture the complexity of the wastewater.
Biological removal of N and P from wastewater (Contact: Mogens Henze and Ahmed S. Ucisik)
Wastewater treatment research involves both experimental work and modeling to identify governing processes in systems in the laboratory, pilot plant and full-scale municipal treatment plant. Focus has mostly been on removal of nitrogen, phosphorus and organic matter in activated sludge and biofilm systems.
Innovative wastewater treatment methods (Contact: Ahmed S. Ucisik, Mogens Henze and Barth F. Smets)
The aim is to develop a new generation of treatment plants especially for domestic wastewater with low sludge production, low energy consumption and nutrients removal/regeneration. Processes like high-flow reactor systems for anaerobic treatment of the wastewater, biological hydrolysis and acidification of the produced sludge, annamox-based processes for removal of N, are some of the processes included in the new concept.
Water treatment and water quality in recirculation aquaculture systems (Contact: Erik Arvin, Henrik Andersen, Barth F. Smets)
Recirculation aquaculture systems (RAS) have a high potential as the open-ocean fish catching is continuously decreasing. RAS can help reduce the environmental load from aquacultures while at the same time deliver high and stable fish production levels. Water treatment in RAS has to provide reliable and cost effective removal of organic matter, nitrogen, pathogens and organic and inorganic chemical ingredients (disinfection agents, antioxidants, antibiotic compounds), taste and odor compounds, etc. Present projects focus on the fate of chemical disinfectants and antioxidants and process modelling in RAS.