Water Technology




Water Technology focuses on sustainable treatment of water for domestic, industrial as well as agricultural use dealing with processes and technologies across the continuum from raw water, to potable water, to wastewater, to storm water. Recovery of resource from used water as well as reuse of water are considered. Both computational and experimental studies are conducted and research is done at the lab, pilot, and full scale, and in collaboration with other research institutes, stake holders, or end users.

Scientific topics in focus:

  • Physico-chemical processes

  • Biotechnological processes
  • Microbial ecology


Henrik Rasmus Andersen
Professor MSO
DTU Miljø
45 25 15 83




Understanding membrane processes for water treatment including the use of hydraulic, osmotic or electro-chemical gradients across semipermeable membranes. Particular focus is on new membrane designs, materials  and operations.

Water treatment from a chemical approach

Selection and optimization of treatment for chemical impurities from industrial pure water to wastewater and municipal drinking water to sewage. Dependence of matrix for process selection, efficiency and products and by-products.

Managing the engineered N cycle

Combining biogeochemical, molecular and mathematical modeling skills, the controls of biogenic N2O emission, new N pathways, and innovative solutions for low-cost N removal are investigated, at lab- and full-scale.

Wastewater systems modeling


Development of bioprocess models to describe the fate of trace organic chemicals; the conversion of nitrogen, growth and nutrient uptake by alga; interpreted computational fluid dynamics; risk assessment, sewage epidemiology.

Removal, recovery & reuse of wastewater resources

Enhanced biological phosphorus recovery and removal, photo-bioreactors for algal nutrient recovery and fertigation, nitritation/anammox based N removal, LCA-aided technology development

Greenhouse gas emission and mitigation

Measurement of N2O and CH4 emissions from wastewater treatment plant units using liquid, off-gas, and plume-based methods, experimental verification of mitigation scenarios, CO2 footprint calculations.

Biofilms and bioaggregates in aqueous systems

Innovative biofilm reactor technology, agent-based and continuum biofilm modelling, advanced analytical techniques including CSLM and microelectrode inspection to assess and control biofilm architectures.

Gene flow in microbial communities

Horizontal transfer of ARGs in mixed microbial communities, effect of environmental stress, high-throughput identification of bacteria involved in transfer and mobilization of MGEs.

Characterization of microbial communities

Understanding the structure and function of engineered microbial communities using a combination of physiological studies, molecular tools and ‘omics approaches to improve management of engineered microbial communities.

Barth Smets, Water

New challenges and opportunities in treatment of used water

Targeted Membrane Technologies

By Claus Hélix-Nielsen, Associate Professor, DTU Environment
17 AUGUST 2019