摘要
本文通过实验表明，在无紊流条件，ＦｅＳＯ４去除直接黄棕Ｄ３Ｇ的混凝反应符合异向凝聚动力学特征，反应速率常数Ｋ与Ｔ／μ成正比，并随ｐＨ值的变化而变化，异向凝聚过程中有效碰撞系数η值为０．１５４，表明染料颗粒在ＦｅＳＯ４的作用下脱稳已比较完全。
The flocculating process is dominated by perikeinetic flocculation in the system without turbulent fluctuation. Experimental results showed that the reaction constant K is proportional to T/μ, which agrees with the perikinetic flocculation theory perfectly. The decrease of solution pH increases the aggregating degree of dye molecules in aqueous solution, which decreases k. On the other hand, it weakens the surface charge of dye molecules, which facilitates the coagulation reaction and increases K. The two factors lead to an optimum pH for coagulation, which is 3.35 according to this paper. At pH 3.47 and room temperature, the effective collision coefficient η is 0.154, which indicates the dye particles are well estabilished by FeSO_4 in aqueous solution.
出处
《水处理技术》
CAS
CSCD
1998年第2期104-108,共5页
Technology of Water Treatment
关键词
异向凝聚
硫酸铁
混凝法
印染废水
废水处理
perikinetic flocculation, twoorder reaction, reaction constant, effective collision coefficient
