Municipal Wastewater Reclamation: Reclaimed Water for Hydrogen Production by Electrolysis - A Case Study

This paper presents an analysis of a treatment system selection for municipal wastewater stream based on the DuPont Water Solutions WAVE software. The results obtained based on an analysis of 7 different processing cases studies (ultrafiltration and reverse osmosis) confirmed that the application of 2-pass membrane systems enables the reclamation of water from municipal wastewater that fulfills the requirements concerning the quality of water intended as electrolyzer feedstock, as the obtained water exhibited a conductivity of < 5 µS/cm. Depending on the analyzed case study, the attainable level of water reclamation ranged from 68.8 to 84.1 % at an energy consumption of 606.1 – 2 694 kWh/d. The results of this work not only confirm that the selected pro cessing solutions make it possible to reclaim water from municipal wastewater, but also confirm the necessity of using software to simulate the membrane system operation to select the most economic and cost-effective solution.