Marco Hartl (PhD and MSc. in Ecological Engineering) has been working and conducting research in the field of Constructed Wetlands (CWs) for wastewater treatment since more than 7 years. After his master thesis about a vertical flow CW with an innovative two-stage design in the alpine region of Austria at BOKU University, Vienna, he explored the opposite climatic extreme by working for BAUER Nimr LLC in the Sultanate of Oman for 15 months. There he coordinated a research project at the world’s largest industrial CW, which is situated in the middle of the Omani desert and treats highly polluted wastewater from the oil industry. In the following years he conducted and finalized his PhD research on the use of CWs operated as bioelectrochemical systems at UPC BarcelonaTech, Spain and Ghent University, Belgium. He speaks fluent English and German, as well as basic Spanish. Now he is part of several projects in alchemia-nova.