【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.更多还原

【Abstract】 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.更多还原