COOLANT REGENERATING DEVICE AND COOLANT REGENERATING METHOD

摘要

This coolant regenerating device (1) is provided with: a first tank unit (11A) at which a subject liquid containing a sludge (S2) is retained and at which a region having more sludge (S2) and a region having less sludge (S2) are formed in the subject liquid; a second tank unit (11B) into which the subject liquid of the region having less sludge (S2) in the first tank unit (11A) flows; and a membrane separation unit (13) that separates a membrane filtrate from the subject liquid flowing in from the second tank unit (11B).