聚硅酸铁高分子絮凝剂的制备及其在废水处理中的应用  

Preparation of Polysilicate Iron Polymer Flocculant and its Application in Wastewater Treatment

作　　者：纪发达 景翔宇 王敬伟 张庭瑞 JI Fada;JING Xiangyu;WANG Jingwei;ZHANG Tingrui(Shandong Longgang Silicon Technology Co.,Ltd.,Weifang 261300,China;South Ural State University,Chelyabinsk 454080,Russia)

机构地区：[1]山东龙港硅业科技有限公司,山东潍坊261300 [2]南乌拉尔国立大学,车里雅宾斯克454080

出　　处：《皮革科学与工程》2024年第2期67-72,共6页Leather Science and Engineering

基　　金：山东省技术创新引导计划项目(2019CXJJA2030004)。

摘　　要：随着环境保护要求的提高和节约水资源的迫切性,行业对工业废水深度处理用絮凝剂的处理效率和综合成本提出了更高的要求。文章以硅酸钠为原料,制备了一种低成本、高效能的无机高分子絮凝剂聚硅酸铁,并研究了絮凝剂制备过程中的影响因素,找到了最佳的制备条件;在处理废水时,考虑反应条件的影响,优化反应条件以达到最佳效果。主要研究内容及结果如下:最佳制备条件为Fe与SiO_(2)的质量比为1∶2,pH值为2.5,反应温度45℃,在反应器中熟化30 min;最佳反应条件为污水pH值为7,絮凝剂添加量为1.0 g/L,絮凝时间为20 min,此时除浊率可达98.8%、COD去除率84.5%、脱色率97.5%。处理后水质符合国家规定的印染废水一级出水标准。With the improvement of environmental protection requirements and the urgency of saving water resources,higher requirements have been put forward for the treatment efficiency and comprehensive cost of flocculants used in advanced treatment of industrial wastewater.This article adopted sodium silicate as the raw material to prepare a low-cost and efficient inorganic polymer flocculant(i.e.,polysilicate iron),and studied the influencing factors of the flocculant during the preparation process for the optimal preparation.The obtained optimal preparation conditions are as follows:the ratio of Fe to SiO_(2)is fixed at 1∶2 and the reaction is conducted at pH 2.5 and 45℃for 30 min.The optimal reaction conditions are as follows:the amount of flocculant added is 1.0 g/L at pH 7.0,and the flocculation time is 20 min.At this time,the turbidity removal rate,COD removal rate,and decolorization rate could reach 98.8%,84.5%,and 97.5%,respectively.The quality of treated water met the national standard for the first level effluent of printing and dyeing wastewater.

关 键 词：聚硅酸铁 絮凝剂 废水 絮凝性能 

分 类 号：X703[环境科学与工程—环境工程]