通过电极的选择,催化活性炭粒子电极的制备,应用电催化氧化技术对某炼油厂含苯酚丙酮的生产废水进行预处理研究.通过对5种金属催化剂进行比较,最终选择锰离子作为活性炭粒子的催化剂,提高了粒子电极的催化活性.通过研究4种影响因素:槽电压、pH值、曝气量、水力停留时间,对CODCr去除效果的影响,得到最佳反应条件为:槽电压取值为15V,进水pH值为5.5～6.5,水力停留时间为90min,曝气量为6m3/(m2·h).在最优条件下,废水CODCr去除率可达到80％,可生化性BOD/COD值从0.07上升到0.43,很大程度上提高了废水的可生化性.在优化的试验条件下,生产废水中的酚类、芳香烃和醛类、酮类物质浓度都能降解到10mg/L以下,作为苯酚丙酮废水预处理效果显著,为后续生化处理提供了有利条件.%The application of electro-catalytic oxidation technology for the pretreatment of a certain refinery's wastewater containing phenol acetone was studied.After selection and preparation,five different metal-loaded activated carbon particle electrodes and their catalytic activities were determined.Manganese ion was finally chosen as the activated carbon particle catalyst,improving the catalytic activity of the particle electrode.Factors like voltage,pH value,aeration rate and hydraulic retention time which influence the catalytic activity were studied.Optimum reaction conditions for the system were as follows:slot voltage value of 15V,water pH value of 5.5～6.5,hydraulic retention time of 90minutes,and aeration rate of 6m3/(m2·h).Under the condition,80％ CODCr removal was achieved and the biodegradability BOD/COD value could be largely increased from 0.07 to 0.43.Under optimum experimental conditions,the concentration of phenols,aromatic hydrocarbons,aldehydes,and ketones in phenol acetone wastewater could be degraded to below 10mg/L.After pretreatment,favorable conditions were provided for subsequent biochemical treatment of phenol acetone wastewater.
展开▼
