PURPOSE: To efficiently regenerate a seasoning liquid for pickling without causing the degradation of the seasoning and the deterioration of the delicious taste component of vegetables in the pickling seasoning liquid by roughly filtering the used seasoning liquid for pickling and subjecting the liquid to fine- filtration to eliminate bacteria.

CONSTITUTION: Used seasoning liquid for pickling is roughly filtered with a coarse filter 11, filtered with a preparatory filter 21 for the bacteria elimination and finely filtered with a bacteria elimination apparatus 31 composed of a fine filter 33 having a pore size of ≤0.2μm to effect the elimination of bacteria and regenerate the pickling seasoning liquid.