| 摘要 |
PURPOSE:To reconcile the effective utilization of a detergent and the facilitation of waste water treatment of rinsings. CONSTITUTION:An object is cleaned with a detergent having a solubility of 0.1 to 20wt.% in a rinse, and then put into the rinse to exfoliate the detergent attached to the surface thereof. The exfoliated detergent is separated from the rinse by virtue of a difference therebetween in specific gravity to decrease the detergent content of the rinsings to thereby facilitate the waste water treatment of the rinsings. The separated detergent is fed again to the cleaning step to promote the effective utilization thereof. |
