【摘要】 采用电絮凝气浮法处理分散艳蓝E-4R染料废水,考察了电解时间、废水初始浓度、pH值及外加电解质氯化钠和絮凝剂等不同反应条件对废水处理效果的影响。结果表明,染料废水脱色率随着电解时间的加大而逐渐增大并随初始浓度的增大而慢慢降低;pH值在2.5~10范围内电解均可获得较高的脱色率。初始浓度为400 mg/L的染料废水,电解20 min后脱色率即达87.39%,但TOC去除率只有10.49%。投加50 mg/L氯化钠后,脱色率和TOC去除率分别达到93.61%和73.49%,TOC去除率提高60%以上。在电解的条件下投加不同絮凝剂能提高染料废水的处理效果,其处理效果从大到小依次为:硫酸铝>三氯化铝>硫酸亚铁,它们的适宜用量分别为50,100,100 mg/L。更多还原

【Abstract】 The treatment of 400 mg/L disperse blue E-4R wastewater was studied by electro-flocculation-floatation method.The effects of reaction time,initial concentration,pH and adding sodium chloride(NaCl) and coagulant agents on the degradation of dye wastewater were investigated.The results showed that the color removal was enhanced as the reaction time increased and was decreased with the increase in dye concentration.pH in 2.5 to 10 ranges has relatively little effect on treatment efficiency.When the initial concentration was 400 mg/L,the color and TOC removal was 87.39% and 10.49% after reaction 20 min,respectively.Adding sodium chloride and coagulant agents enhanced the efficiency of treatment.When adding 50 mg/L sodium chloride,the color and TOC removal was up to 93.61% and 73.49%.The TOC removal was enhanced more than 60%.The treatment ability of three coagulant agents were that: aluminium sulfate[Al2(SO4)3·18H2O](aluminum chloride) ferrous sulfate,and the optimal amount of aluminium sulfate,aluminm chloride ferrous sulfate is 50,100 and 100 mg/L.更多还原