Device and method for removing high-concentration heavy metals in wastewater through electrolysis and wetland combination

The invention discloses a device and a method for removing high-concentration heavy metals in wastewater through electrolysis and wetland combination. The device comprises an electrolysis assembly and a wetland purification assembly, the electrolysis assembly comprises an electrolytic tank and a battery, a plurality of groups of electrodes connected in parallel are arranged in the electrolytic tank, the electrodes comprise anodes and cathodes, the anodes are connected with the positive electrode of the battery, the cathodes are connected with the negative electrode of the battery, the cathodes of each group of electrodes and the anodes of the adjacent group of electrodes form a group of electrodes again, and the anodes and the cathodes of the adjacent group of electrodes form a group of electrodes. An electrolyte inlet is formed in one side wall of the electrolytic bath, and the other side wall of the electrolytic bath is connected with the wetland purification assembly through a pipeline. On one hand, the co