| 摘要 |
<p>A process for continuously controlling the pH value of an industrial process liquid comprising the steps of: (a) removing from the process liquid coming from an industrial process the impurities and controlling its pH value. (b), adding an aqueous solution having an acid or basic character depending on the employed process liquid if the pH value of the purified process liquid differs from its nominal value until its pH value reaches its nominal value. (c) feeding the purified process liquid having the desired acid or basic pH value to the intended industrial process. (d) maintaining the character of the aqueous solution to be added to the process liquid constantly acid or basic by ion exchange resins. (e) repeating the steps (a) (b) (c) and (d). Also claimed is a system for carrying out the process.</p> |
