新型多元微电解填料对染料废水的降解性能研究

Study on degradation performance of novel multi-component micro-electrolysis filler to dye wastewater

在传统铁碳微电解填料的基础上同时加入铝和铜,制备得到了新型多元微电解填料。利用新型多元微电解填料对刚果红模拟废水进行降解性能研究,探究废水初始p H、填料投加量、曝气量、反应时间对降解效果的影响,确定最佳处理条件,并在此基础上进行静态循环实验、UV-Vis分析,初步推断多元微电解体系的降解机理并对使用前后填料形态进行SEM表征。结果表明,当废水初始p H为3、填料投加质量浓度为200 g/L、曝气量为200 m L/min、室温、反应时间为180 min时,对100 mg/L刚果红废水的降解率高达96.25%。通过10次静态循环实验,连续运行30 h,刚果红降解率始终保持在95%以上;絮凝后,刚果红降解率始终保持在96%以上。

A novel multi-component micro-electrolysis filler is prepared through adding aluminum and copper simultaneously into traditional iron-carbon micro-electrolysis filler,and used to degrade simulated Congo red wastewater to explore the effects of the initial p H value of wastewater,filler dosage,aeration,reaction time on the degradation effect and determine the best treatment conditions.On this basis,a static cycle experiment and UV-Vis analysis are carried out to preliminarily infer the degradation mechanism of the multi-component micro-electrolysis system.The morphology of filler before and after use is characterized by means of SEM.Experimental results show that the degradation rate of 100mg·L^(-1) Congo red wastewater by the filler reaches as high as 96.25%when the initial p H of wastewater is 3,the filler dosage is 200 g·L^(-1),the aeration rate is 200 m L·min^(-1),and the reaction has performed for 180 min at room temperature.Through 10 static cycle tests and continuous operation for 30 h,the degradation rate of Congo red has always remained above 95%.If degradation is performed after flocculation,the degradation rate of Congo red has always remained above96%,even reaching 100%.