聚硅酸硫酸铁絮凝剂的研制  

Preparation of Polyiron Silicate Sulfate Flocculants

作　　者：孙小花[1] 王维钬[1] 郑晓虹[1] 陈震[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《临沂师范学院学报》2003年第6期45-48,共4页Journal of Linyi Teachers' College

摘　　要：用硫铁矿渣和硫酸铝渣制备了聚硅酸硫酸铁.研究了影响硅酸聚合的条件和nFe nSi对聚硅酸硫酸铁稳定性的影响.用研制的聚硅酸硫酸铁絮凝剂处理模拟浊水,当nFe nSi比为0 5时絮凝效果为最佳,用量达0 5ml L后除浊率便可达90%以上;用nFe nSi比为1 5的聚硅酸硫酸铁处理垃圾填埋场渗沥液,CODCr的去除率达60%.聚硅酸硫酸铁的特点是形成矾花的速度快,矾花实,沉降迅速.The polyiron silicate sulfate flocculants (PFSS) were made from pyrite cinder and bauxite sledge. The conditions of polymerization of silicate acid and the effect of n_(Fe)/n_(Si) on the stability of PFSS were studied. The prepared PFSS was applied to treat simulating turbid water, the results of treatment showed: the PFSS of n_(Fe)/n_(Si)=0.5 had a better turbidity reducing than that of other n_(Fe)/n_(Si) values, the removal rate of turbidity was above 90% in the addition of 0.5ml/L of n_(Fe)/n_(Si)=0.5 PFSS. The treatment of fillland leachates showed that the COD_(Cr) of fillland leachates lowered 60% using PFSS of n_(Fe)/n_(Si)=1.5. The characters of PFSS were that the vitriol flowers grew rapidly, became big and sturdy, then settled out fast.

关 键 词：聚硅酸硫酸铁 硫酸铝渣 黄铁矿烧渣 垃圾填埋场渗沥液 

分 类 号：O613.7[理学—无机化学]