Treatment tank for electrochemical treatment of heavy metal wastewater

The utility model belongs to the technical field of wastewater treatment, provides a treatment tank for electrochemical treatment of heavy metal wastewater, and aims to solve the problems of low wastewater treatment efficiency and difficulty in maintenance in a heavy metal wastewater treatment device in the prior art. The treatment tank comprises a tank body with an inner cavity, the heavy metal wastewater in the adjusting tank overflows into the electrochemical reaction tank through the first partition plate, the heavy metal wastewater in the electrochemical reaction tank overflows into the oxidation tank through the second partition plate, and the heavy metal wastewater in the oxidation tank overflows into the callback tank through the third partition plate; wastewater in the callback tank overflows into the sedimentation tank through the fourth partition plate, and an overflow plate is arranged in the callback tank. The wastewater does not need to be supplied into a next-stage treatment device through a wa