Optimal Model of Hydrogen Production Coupled Sewage Treatment from Renewable Energy for Hydrogen and Oxygen Utilization

To avoid the waste of oxygen, a byproduct of hydrogen production from electricity, this article proposes a new utilization scenario that combines renewable energy hydrogen production with sewage treatment, and supplies pure oxygen from hydrogen production to the aerobic aeration tank for sewage treatment. This scenario involves combining pure oxygen with air, achieving the optimal pure oxygen ratio through adjustment, and then being aerated by an aerator into an aerobic bioreactor. While achieving comprehensive utilization of hydrogen and oxygen, it greatly enhances the economy of renewable energy hydrogen production. A new application scenario for renewable energy hydrogen production is provided, and simulation results show that its daily operating cost is reduced by 67.5%. The energy consumption of the aerator is reduced by 28.5%, and the light rejection rate is reduced by 30%.