粉煤灰絮凝剂处理高浓度印钞废水的研究  

Study on High Concentration Paper Money Printing Wastewater Treatment with Fly Ash Flocculants

作　　者：赵亚娟[1] 赵西成[2] 韩彤[1] 江元汝[1] 刘转年[3] 

机构地区：[1]西安建筑科技大学理学院,西安710055 [2]西安建筑科技大学冶金工程学院,西安710055 [3]西安科技大学地质与环境工程系,西安710054

出　　处：《材料导报》2008年第10期118-120,共3页Materials Reports

基　　金：陕西省教育厅产业化培育项目(06JC11);陕西省工业攻关项目(2006k07-G19);西安市科技局工业攻关项目(GG06074)

摘　　要：以粉煤灰为原料制备无机絮凝剂,采用酸浸法提取出粉煤灰中的铝及少量铁,再用碱浸出粉煤灰中的硅,然后利用上述提取出的产品制备无机絮凝剂(聚硅酸铝及聚硅酸铝铁),主要研究絮凝剂对印钞废水的浊度和COD的去除情况。结果表明:絮凝剂在介质条件为在中性范围、絮凝时间2天以上、温度为35℃时絮凝效果最佳,去浊度可高达100%,COD去除率可达到80%,达到国家2级排放标准。In this paper, a method is studied to produce aluminum and iron salt by acid leaching and to produce silicon salt by alkali leaching using fly ash as main raw materials. Then the flocculants （polymeric ferric aluminum silicate sulfate） are prepared with the products of the two steps above. The removal rates of turbidity and COD of the floe- culants treating paper money printing wastewater are studied mainly. The results show that the flocculating effect of flocculation is the best at pH value in the neutral area and the temperature at 35℃ and after two days. The removal rates of turbidity and COD can reach 100% and 80%respectively, reaching national grade-2 emission standards.

关 键 词：粉煤灰 絮凝剂 废水处理 聚硅酸铝铁 印钞废水 COD 浊度 

分 类 号：X796[环境科学与工程—环境工程] TU991.22[建筑科学—市政工程]