水处理氧化还原过程的电动化学特性  

ELECTROKINETIC CHEMISTRY CHARACTERISTICS OF OXIDATION AND REDUCTION PROCESS IN WATER TREATMENT

作　　者：曲久辉[1] 

机构地区：[1]环境水化学国家重点实验室

出　　处：《环境化学》1997年第2期178-184,共7页Environmental Chemistry

摘　　要：以流动电流为参数,研究了水处理条件下氧化还原过程的电动化学特性.考察了水中KMnO_4及其与Mn^(2+),Fe^(2+)之间氧化还原作用的流动电流(SC)规律,探讨了氧化还原的初始条件、水处理环境、原水水质、氧化剂与还原剂的投加方式等对流动电流的影响.结果表明,水中约0.5mg·l^(-1)的KMnO_4可产生SC的峰值,而且当它与Mn^(2+)和Fe^(2+)经不同条件进行氧化还原作用时,可通过SC值的变化表现出更为明显的电动化学特性.Taking streaming current (SO as the essential parameter, this paper focuses on the electrokinetic chemistry characteristics of oxidation and reduction process in water treatment condition. The study includes the relationship between the concentration of potassium permanganate (KMnO4) and SC values, the law of streaming current while KMnO4 reacts with Mn2+or Fe2+ in water,the effect of some important factors,such as the initial condition of oxidation and reduction,environment of water treatment,raw water quality, the dosing method of reagent, on SC value. The results show that, the maximum SC value can be observed when the dosage of KMnO4 reached to 0.5mg·l-1, and the more strong electrokinetic chemistry characteristics can be performed in the process for KMnO4 oxidizing Mn2+ and Fe2+ by the increase of streaming current.

关 键 词：水处理 氧化还原 流动电流 电动化学特性 

分 类 号：TQ085.4[化学工程]