作　　者： ; ; ; ; (赵德骏）; (袁秀丽）; (谢葆红）;

机构地区： 广东工业大学土木与交通工程学院

出　　处： 《环境科学与技术》 2012年第12期104-107,113,共5页

摘　　要： 实验研究亚铁盐对来自于供水水库的含藻原水二氧化氯杀藻过程中产生的无机副产物亚氯酸盐去除的效果及亚铁盐的投加量,同时考察亚铁盐在去除亚氯酸盐的过程中的除浊作用。实验结果表明,FeSO4能完全去除二氧化氯杀藻的无机副产物亚氯酸盐。FeSO4在去除亚氯酸盐的同时也与二氧化氯反应而使二氧化氯的浓度降低。FeSO4的用量是亚氯酸盐和二氧化氯与FeSO4反应的理论用量的总和。在二氧化氯预氧化杀藻与投加FeSO4的时间间隔较短的情况下,FeSO4的投加量按照初始投加量70%的二氧化氯与FeSO4反应的化学计量关系计算确定,此时亚氯酸盐能完全被去除。FeSO4在去除亚氯酸盐的同时具有除浊作用,在饮用水的净化中可以减少常规混凝剂的用量,当浊度为23.3 NTU或24.3 NTU时,不需再投加常规混凝剂。FeSO4的絮凝作用对除藻有协同作用。 An experimental study is conducted relating to the drinking water treatment process with raw water abstracted from a reservoir, during which ClO2, a sort of algaecide, has been used and as a result the byproduct, i.e. chlorite produced. The study focuses on removing chlorite, the by-product, by using FeSO4 that remove chlorite at the same time reacts with ClO2. In the case of the time interval between addition of ClO2 and FeSO4 being relatively short, the dosage of FeSO4 is determined according to the stoichiometfic relation of the dosage reacting with 70% of the initial dosage of ClO2, thus chlorite in the water can be totally removed. Being able to enhance turbidity-removing, FeSO4, when added, reduces amount of the coagulant conventionally applied in water treatment; it has been proved that no more conventional coagulant is needed when turbidity is 23.3NTU or 24.3 NTU. In fact, FeSO4 is characterized with a synergetic effect of removing algae and turbidity.

关 键 词： 亚氯酸盐 硫酸亚铁 二氧化氯 藻

领　　域： [环境科学与工程]