Study on the Treatment of 2,3-Dichloropyridine Wastewater
Two-frequency ultrasonic catalytic oxidation and photo catalytic oxidation were used to treat 2,3-dichloropyri-dine distillation wastewater.The effluent COD value can be reduced to less than 500 mg/L,and the COD removal rate is greater than 90％.At the same time,COD online monitor is used to ensure that qualified wastewater is treated into the stor-age tank and then into the biochemical system for treatment.The unqualified wastewater is returned to the catalytic oxida-tion system for further oxidation until the effluent COD is less than 500 mg/L.
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