作　　者： ; ; ; ;

机构地区： 福州大学化学化工学院

出　　处： 《环境工程》 2013年第6期41-44,共4页

摘　　要： 以某电镀工业园的重污染废水经常规处理后的出水为对象,研究进一步去除废水中有机物的方法。结果表明:1)废水直接曝气可使COD降低15.70%,加酸曝气则降低31.32%,酸化曝气法适合作为Fenton或电解法的前处理以减少处理成本。2)Fenton氧化法的最佳工艺条件为:H2O2(质量分数为30%)为0.48 mL/L、FeSO4·7H2O为0.52 g/L,pH=4,该条件下可使废水ρ(COD)由147.41 mg/L降至38.74 mg/L,药剂成本为2~3元/m3,技术及经济上均可行。3)采用析氯电解法,在以钌铱板为阳极、电流10 A、电压6 V条件下电解30 min可使废水的ρ(COD)降至69.72 mg/L,实现有机物的达标。 The heavily polluted electroplating wastewater treated by conventional method of a plating industrial zone was taken as the object to find out the organic removal method. The results showed that： 1 ） The COD removal efficiency could reach 15.70% through aeration process and 31.32% through the same method in acid condition, and this method could be used as the pretreatment for Fenton or electrolysis process. 2） The optimal parameters of Fenton oxidation were H2 02 （30% of mass fraction）0.48 mL/L and FeSQ .7H^O 0. 52 g/L and pH =4. Under these condition, the COD value could drop from 147.41 mg/L to 38.74 mg/L, the reagent cost was 2 - 3 yuan/m3 , and it was feasible in both economy and technology. 3） Under the condition that RuO2-IrO2 board was used as anode electrode, current was 10 A and voltage was 6 V, the COD could drop to 69.72 mg/L after electrolyzing for 30 min, whose organism could be up to the standard.

关 键 词： 电镀废水 有机污染物 析氯电解法 氧化法 曝气法

领　　域： [环境科学与工程]