Resourceful treatment method of 1, 2, 3, 6-tetrahydrophthalimide production wastewater
The invention discloses a resourceful treatment method of 1, 2, 3, 6-tetrahydrophthalimide production wastewater, which comprises the following steps: adding acid into 1, 2, 3, 6-tetrahydrophthalimide crystallization mother liquor for acidification, mixing the acidified crystallization mother liquor...
Gespeichert in:
Hauptverfasser: | , , , , , , , , |
---|---|
Format: | Patent |
Sprache: | chi ; eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The invention discloses a resourceful treatment method of 1, 2, 3, 6-tetrahydrophthalimide production wastewater, which comprises the following steps: adding acid into 1, 2, 3, 6-tetrahydrophthalimide crystallization mother liquor for acidification, mixing the acidified crystallization mother liquor with an extraction agent, extracting, separating liquid, adding water into a water phase for alkalization, enabling the alkalized water phase to pass through a resin column, and carrying out resourceful treatment on the 1, 2, 3, 6-tetrahydrophthalimide production wastewater to obtain the 1, 2, 3, 6-tetrahydrophthalimide production wastewater. 2, 3, 4, 6-tetrahydrophthalimide is added for enrichment; and eluting the resin column with an acid, adjusting the pH value of the obtained desorption solution to be alkaline, crystallizing, and filtering to obtain the 1, 2, 3, 6-tetrahydrophthalimide. The existing form of the 1, 2, 3, 6-tetrahydrophthalimide in the wastewater is changed through acid-base adjustment, purifica |
---|