Recovery method for waste water of 1, 4-dihydroxyanthraquinone production
The invention discloses a recovery method for waste water of 1,4-dihydroxyanthraquinone productionwhich consists of subjecting 1,4-dihydroxyanthraquinone processing waste water to condensation till sulfuric acid concentration is 20%-80%, cooling to 30-0 deg. C for crystallization, proceeding solid-l...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention discloses a recovery method for waste water of 1,4-dihydroxyanthraquinone productionwhich consists of subjecting 1,4-dihydroxyanthraquinone processing waste water to condensation till sulfuric acid concentration is 20%-80%, cooling to 30-0 deg. C for crystallization, proceeding solid-liquid separation, the filtered body is 20-80% of sulfuric acid, finally drying the filter cakes. |
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