| 摘要 |
<p>A process for cleaning a cleaning object, having the following steps: placing water and organic substances, with or without previous blending, in a cleaning vessel, the organic substances having a specific gravity higher than that of water and being capable of exhibiting phase separation to water; allowing water and the organic substances to be in the state of phase separation in which the concentration of the organic substances in a lower layer is higher than that in an upper layer; and cleaning the cleaning object in the lower layer.</p> |
