%0 Journal Article
%T 一种无机复合絮凝剂的制备及其对染料废水的处理<br>Preparation of an inorganic composite flocculant and its effect on dye wastewater treatment
%A 孙树青
%A 孙丰凯
%A 梁爽
%A 徐晓丽&lt
%A br&gt
%A SUN Shuqing
%A SUN Fengkai
%A LIANG Shuang
%A XU Xiaoli
%J 山东大学学报（工学版）
%D 2018
%R 10.6040/j.issn.1672-3961.0.2018.002
%X 摘要： 以FeCl3·6H2O,ZnSO4·7H2O,MgCl2·6H2O和Na2SiO3·9H2O为主要原料,制备了聚合硅酸铁锌镁絮凝剂,通过对刚果红染料废水进行脱色实验,得出了制备过程中铁锌镁硅的最佳物质的量比,初始pH和絮凝剂用量对脱色率及污泥体积的影响。实验结果表明,制备聚合硅酸锌铁镁过程中,铁锌镁硅的最佳物质的量比为1∶4∶1∶2。聚合硅酸铁锌镁在pH为9.0~13.0变化过程中脱色率均在90%以上,特别是pH为10.0和11.0时脱色率达到了99%。一定pH条件下,聚合硅酸铁锌镁对刚果红溶液的脱色效果随着用量先增大再降低。实验过程中产生的污泥体积随着pH和絮凝剂用量的增大而增大,特别是当pH从11.0变化到12.0时,污泥体积增加了近3倍。相对于传统镁盐絮凝剂,聚合硅酸铁锌镁在处理染料废水时具有pH适用范围更宽且产生污泥体积更小的优势。<br>Abstract: With FeCl3·6H2O, ZnSO4·7H2O, MgCl2·6H2O and Na2SiO3·9H2O as main materials, the flocculant poly-silicate ferric zinc magnesium was prepared. The optimal molar ratio of iron, zinc, magnesium and silicon and the impact of initial pH and flocculant dosage on the decolorization rate and sludge volume were investigated through the decolorization experiment of Congo red wastewater. The results showed that the optimal molar ratio of Fe, Zn, Mg and Si was 1∶4∶1∶2. The decolorization rate was higher than 90% during the range of pH 9.0~13.0. Especially at pH=10.0 and 11.0, the decolorization rate reached 99%. Under a certain pH condition, the decolorization performance of the flocculant on the Congo red solution increased and then decreased with the addition of dosage. Sludge volume increased with the increase of pH and flocculant dosage. Especially when pH changed from 11.0 to 12.0, the sludge volume increased nearly 3 times. Compared with the traditional magnesium salt flocculant, poly-silicate ferric zinc magnesium had the advantages of wider pH application range and smaller sludge volume when treating dye wastewater
%K 刚果红
%K 染料废水
%K 聚合硅酸铁锌镁
%K 脱色率
%K 絮凝
%K 污泥体积
%K &lt
%K br&gt
%K decolorization rate
%K poly-silicate ferric zinc magnesium
%K sludge volume
%K flocculation
%K Congo red
%K dye wastewater
%U http://gxbwk.njournal.sdu.edu.cn/CN/10.6040/j.issn.1672-3961.0.2018.002