【摘要】 采用臭氧(O3)氧化法处理含高浓度黄连素和COD的制药废水,探讨了废水初始pH、O3投加量及初始黄连素浓度等因素对O3氧化过程的影响,确定了O3氧化技术处理黄连素制药废水的最佳操作条件。结果表明,O3能够有效分解废水中的黄连素,降低其COD浓度;黄连素浓度为700 mg/L、COD为3 500 mg/L、pH为0.88的废水,进气O3浓度为14.05 mg/(L.min),处理时间为180 min(即投加量为2 529 mg/L)时,黄连素和COD的降解率分别可达77.46%和41.28%,BOD5/COD比(B/C比)从0.06提高到0.34,增加了4.7倍;随着废水中初始黄连素浓度的升高,废水COD降解率逐渐降低。O3氧化法是一种有效的黄连素制药废水预处理技术,可以大大提高废水的可生化性。更多还原

【Abstract】 O3 oxidation process was used to treat berberine pharmaceutical wastewater with highly concentrated berberine and COD.The effects of initial wastewater pH,O3 dosage and initial berberine concentration on the O3 oxidation process efficiencies were investigated to determine the optimal operation parameters.It showed that the berberine in wastewater could be effectively decomposed by O3,and its COD concentration was reduced.For the wastewater with berberine of 700 mg/L,COD of 3 500 mg/L and pH of 0.88,when the ozone concentration was 14.05 mg/(L·min) and the treatment time was 180 min(the ozone dosage was 2 529 mg/L),the berberine and COD removal efficiencies reached 77.46% and 41.28%,respectively;the BOD5/COD ratio(B/C ratio) increased from 0.06 to 0.34.As the initial concentration of berberine wastewater increased,the berberine and COD removal efficiencies decreased gradually.It was verified that O3 oxidation process was an effective pretreatment technology that could greatly improve the biodegradability of berberine pharmaceutical wastewater,with a B/C ratio increase by 4.7 times.更多还原