Method for treating pyridine derivative wastewater

The invention discloses a method for treating pyridine derivative wastewater. The pyridine derivative wastewater is pretreated through a flocculating agent; a treating solution is adsorbed through a composite adsorption column after filtration, pyridine derivatives in the wastewater are adsorbed by the composite adsorption column, and flowing colorless water is biochemically treated and discharged after reaching the standard or evaporated and recycled after salt is removed; a pyridine derivative alcoholic solution obtained after desorption of the composite adsorption column is distilled under the negative pressure, alcohol is obtained after gas-phase condensation and then is recycled, a pyridine derivative solution remaining in a kettle is purified and refined, and a finished product of the pyridine derivatives is obtained; the composite adsorption column is regenerated by hydrochloric acid or an alkaline solution or directly by water, a flowing water solution is subjected to biochemical treatment and discharged after reaching the standard, and the composite adsorption column is regenerated for standby application. By means of the method, the pyridine derivatives in the wastewater are recovered, the product yield is improved, and the content of the pyridine derivatives in the treated colorless water is smaller than or equal to 1 mg/L; the problems of difficulty in treatment of the pyridine derivative wastewater, high equipment investment, high treatment cost and the like are solved, the pyridine derivatives are recovered, and environmental pollution is reduced.