| 摘要 |
PURPOSE:To reproduce the processed water in a sterilized state at a reusable level for rinse shower in the title water recovery method from thin drain produced by the cleaning step of soldered printed substrate. CONSTITUTION:Within the title water recovery method from the thin drain containing respective removal steps such as the fine particle removing step using microfilms 2 and/or 9; the organic matter removing step using an active carbon adsorption tower 3; and the metallic ion content and organic acid content removing step using an ion-exchange resin towers 4 and 5 or a mixed bed tower 10, the other step ultraviolet sterilizing the processed water by said organic matter removing step and metallic ion content, organic acid content removing step using UV sterilizer 7 is further added to the title water recovery method. |
