System and method for recycling acid liquor of lead-acid battery

The invention provides a lead-acid battery acid liquor recycling system and method, and belongs to the technical field of lead-acid storage batteries, the lead-acid battery acid liquor recycling system comprises a first acid storage tank used for being communicated with a liquid level adjusting machine, a transfer acid preparation container and a second acid storage tank used for being communicated with a secondary acid filling machine, and the first acid storage tank, the transfer acid preparation container and the second acid storage tank are communicated in sequence; the transfer acid preparation container is further communicated with an adjusting acid storage tank, a high-concentration sulfuric acid electrolyte with the concentration larger than the concentration needed by secondary acid filling is stored in the adjusting acid storage tank, and the adjusting acid storage tank is used for adjusting the concentration of the sulfuric acid electrolyte flowing into the transfer acid preparation container throu