System and method for producing hydrogen by directly electrolyzing urea-containing wastewater with renewable energy

The invention discloses a system and method for producing hydrogen by directly electrolyzing urea-containing wastewater with renewable energy. The system comprises a renewable energy generation module, a power conditioning module, a urea-containing wastewater pretreatment module, an alkaline urea electrolytic hydrogen production module, a gas / liquid separation, drying and purifying module, an alkaline liquor circulating pump, a hydrogen storage tank and an anode product storage module, wherein an output end of the renewable energy generation module is connected with an input end of the power conditioning module, and an output end of the power conditioning module is connected with the alkaline urea electrolytic hydrogen production module. By means of the system, nearby in-time consumption of renewable energy power is facilitated, the hydrogen production cost is r educed, the tolerance of the hydrogen production system to the volatility and intermittence of a power supply is improved, a hydrogen production technology is combined with a water treatment technology, and while the hydrogen production energy consumption is reduced, environmental pollution is avoided; the applicability of the system is wide, the stability is high, the hydrogen produced by the system is high in purity, the process is simple, and industrial production is facilitated.