UV-Fenton体系预处理四氢呋喃废水实验研究

Study on pre-treatment of tetrahydrofuran wastewater by UV-Fenton system

采用UV-Fenton体系预处理四氢呋喃废水,实验结果表明,pH值、反应时间、Fe2+和H2O2投加量等因素对处理效果有较大的影响。实验确定的最佳反应条件为:原水pH=5,Fe2+投加量2.5 mmol/L,H2O2投加量12 mmol/L,反应时间90 min,连续曝气,在此条件下,COD去除率可达85%左右。经UV-Fenton体系处理后,废水的B/C值由0.16增至0.47,可生化性提高,可满足后续生化处理的要求。

UV/Fenton process was used as a pretreatment method to treat tetrahydrofuran wastewater.Experimental results showed that the influencing factors for the reaction mainly included pH,reaction time,the dosage of Fe2＋ and H2O2.Under the conditions of continuous aeration,the optimum reaction conditions of pH,dosage of Fe2＋,dosage of H2O2,reaction time were 5,2.5 mmol/L,12 mmol/L and 90 min,respectively.Under the optimum conditions,the removal rate of COD could be up to 85%.After treatment,the B/C value of the wastewater increased from 0.16 to 0.47,and the biodegradability was improved greatly,and the effluent could satisfy the requirements of follow-up biochemical treatment process compeletely.