含锌镉铝铁废水中金属的资源化分离回收工艺

贺斐,程爽,高贺敏,章亚东

Resource separation and recycling process of metal in Zn, Cd, Al and Fe wastewater

Fei HE,Shuang CHENG,Hemin GAO,Yadong ZHANG

表2 平衡pH下Zn2+、Cd2+的分配比和分离系数

Table 2 Distribution ratio and separation coefficient of Zn2+ and Cd2+ under equilibrium pH

平衡pH DZn DCd SZn/Cd 1 0.355 0 ∞ 1.49 1.639 0.018 92.965 1.8 2.095 0.023 91.458 2.0 3.414 0.043 79.422 2.15 4.056 0.080 50.554 3.02 58.172 0.097 599.878 3.98 999 1.514 659.642 5.04 999 45.729 21.846