Modeling and optimization of the transport processes in porous systems of nature based solutions for wastewater reuse

Our project focuses on decentralized roof systems based on the principle of shallow-root treatment combined with other elements that produce biologically treated wastewater, mainly for irrigating urban greenery. We will test the use of circular materials (sorted recycled demolition waste and biochar from pyrolyzed sewage sludge) for the construction of root treatment plants and associated green roof layers.

The main experiments will take place on a pilot installation of a so-called hybrid green roof, which combines a horizontal root treatment unit and a semi-intensive vegetation layer. In addition to full-scale tests, we will conduct laboratory experiments on two smaller models and develop mathematical models of water flow and transport processes. Numerical models for simulating variably-saturated movement of water, energy and solute transport, will be calibrated using direct experimental data. Cooperation with international partners will allow us to compare the results with other similar systems and contribute to the optimization of their design and operation. In the long term, the results of the project will lead to more efficient decentralized wastewater treatment and reuse.

The project Modeling and optimization of transport processes in porous systems – nature-based solutions for wastewater treatment and reuse is supported by the Ministry of Education, Youth and Sports within the INTER-EXCELLENCE II program, subprogram INTER-COST – LUC25.