Electrolysis system for producing hydrogen from wastewater

The invention provides a waste water hydrogen production electrolysis system, and relates to the technical field of waste water hydrogen production, the waste water hydrogen production electrolysis system comprises a waste water electrolysis part and a heat recovery part, the waste water electrolysis part comprises a waste water pool, an electrolytic bath, a gas purifier, a flow guide pipe, a gas separator and a draft tube; a water outlet of the wastewater pool is communicated with the electrolytic bath so as to convey wastewater into the electrolytic bath, the electrolytic bath is used for electrolyzing the wastewater to produce hydrogen, a gas-liquid mixture outlet of the electrolytic bath is communicated with an inlet of the gas purifier, and an outlet of the gas purifier is communicated with an inlet of the gas separator through a flow guide pipe; a wastewater outlet of the electrolytic bath is communicated with a draft tube so as to discharge electrolyzed wastewater; and the heat recovery part comprises