电絮凝-三维电极技术处理含镍电镀废水

发布时间：2018-05-15 10:52

本文选题：电镀废水 + 镍　；参考：《电镀与涂饰》2017年03期

【摘要】：分别研究了电絮凝技术和三维电极技术对含镍电镀废水的去除效果。在初始pH为3、初始镍浓度为120.7 mg/L、电流密度为6 mA/cm~2、反应25 min的条件下,电絮凝技术的镍去除率在90%以上。考察了影响三维电极处理的因素,包括活性炭吸附、搅拌、电压和进水镍浓度。在操作电压为6 V、反应120 min的条件下,三维电极技术可将初始镍浓度为10 mg/L和20 mg/L的电镀废水分别降低至0.1 mg/L和0.2 mg/L以下。利用电絮凝-三维电极联合技术处理含镍电镀废水,运行7个周期内出水总镍浓度均低于0.15 mg/L。
[Abstract]:The removal effect of electroflocculation and three-dimensional electrode on nickel-containing electroplating wastewater was studied. When the initial pH is 3, the initial nickel concentration is 120.7 mg / L, the current density is 6 Ma / cm ~ (-2) and the reaction is 25 min, the removal rate of nickel by electroflocculation is over 90%. The factors affecting three dimensional electrode treatment, including activated carbon adsorption, agitation, voltage and influent nickel concentration, were investigated. Under the condition of operating voltage of 6 V and reaction of 120 min, the electroplating wastewater with initial nickel concentration of 10 mg/L and 20 mg/L can be reduced to 0. 1 mg/L and 0. 2 mg/L, respectively. The electroflocculation-three dimensional electrode technique was used to treat nickel electroplating wastewater. The total nickel concentration in effluent was lower than 0.15 mg / L during 7 cycles.
【作者单位】：环境保护部华南环境科学研究所;广州华科环保工程有限公司;
【基金】：国家科技重大专项项目(2014ZX07204-008)子课题:电镀废水中毒害污染物全过程控制技术研究与工程示范(2014ZX07204-008-002)
【分类号】：X781.1

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