System for supplementing electrolytic washing liquid into electrolysis after impurity removal

The electrolysis system comprises an electrolytic tank lower liquid storage tank and an electrolytic tank, the electrolytic tank is installed at the top end of the electrolytic tank lower liquid storage tank, a small acid pump is installed on the side wall of one end of the electrolytic tank, a first water suction pipe is installed at the input end of the small acid pump, and the first water suction pipe communicates with the electrolytic tank lower liquid storage tank; a first drainage pipe is installed at the output end of the small acid pump and communicates with the electrolytic tank, a sludge suction pipe penetrating through the side wall of one end of the electrolytic tank is arranged at the bottom end in the electrolytic tank, a connecting pipe is installed at the end, away from the electrolytic tank, of the sludge suction pipe, and a second water suction pipe is installed at the end, away from the sludge suction pipe, of the connecting pipe. Independent circulation and independent electrolysis are car