| 摘要 |
<p>An improved apparatus and method for the purification of waste wash water (20) derived from the production of aromatic acids. Lost aromatic acid product and the heavy metal oxidation catalyst is recovered and purified water is recycled to the process. The process includes the steps of filtration (10) to recover the insoluble aromatic acid (21), ion exchange (11) to recover and purify the heavy metal oxidation catalyst (12), and a reverse osmosis system (13) for recovering the water (14) for reuse.</p> |
