Interfaces in sewer systems
- © TUB, IGB
- Common aim: Our aim is a more fundamental understanding of the processes at the interfaces between building material, wastewater and gas space using experiments (lab, pilot plant) and modelling. Specifically, reactions in biofilms lead to the formation of H2S (anerobic) and sulfuric acid (aerobic). This should lead to predicting the durability of concrete in sewage systems and to investigate countermeasures to reduce odour problems.
- Key processes: sulphur and nitrogen cycles in sewers, H2S formation, odour, corrosion, interaction of biofilm / wastewater and biofilm / building material interfaces and their effect on odour and corrosion.
- Common approaches: transfer of laboratory tests for concrete corrosion to processes in sewer systems; laboratory performance tests for concrete under acid attack, measurement of odour and concrete corrosion in pilot plant, development of tools for estimating durability of materials used for sewer systems; experimental data for model validation, countermeasures for H2S production in sewer; multi-dimensional flow and reactive transport in water and air phase, mass transfer (e.g. degassing), near surface turbulence.
- Collaboration: BWB: operation of sewer pilot plant; Prof. Matthias Barjenbruch (expert in urban water management, odour and corrosion in sewer systems, CoPI S1, S2); Dr. Adrian Augstyniak (expert in biofilms on building materials): associated postdoc working on biofilms together with Prof. Ulrich Szewzyk / Dr. Burga Braun (H2); Prof. Mark Gessner (F4): GHG emissions; H2: OpenFOAM modelling; Prof. Eva Paton (W2): first flush pollution simulations.
Common Topics Day Presentation March 2020