电石渣处理高浓度含氟酸性废水新工艺研究  

Study on a new technology of the treatment of high-concentration fluorine-containing acidic wastewater with carbide slag

作　　者：邓新云[1] 颜鑫[1] 

机构地区：[1]湖南化工职业技术学院化工系,湖南株洲412004

出　　处：《工业水处理》2013年第11期43-45,共3页Industrial Water Treatment

基　　金：湖南省科技计划支撑项目(2013FJ3069)

摘　　要：根据干法氟化铝生产过程产生的含氟废水水质和电石渣的特点，提出了电石渣处理而浓度笛氟酸性发水的工艺流程。当控制含氟废水pH为8-9，PAM质量分数为0．1％，加入量为0．02％时，就可以确保清液中氟质量浓度达到少于10mg，L的国家排放标准。工艺中80％的中水可循环回收，20％的中水可达标排放，其滤渣主要成分为CaF2，经干燥后可循环回收，使原料利用率提高约2．4％，从而实现以废治废、循环经济的目的，具有显著的经济效益和环境效益。According to the characteristics of fluorine-containing wastewater from the dry process of AIF3 production and carbide slag,the process flow for treating high-concentration fluorine-containing wastewater with carbide slag has been put forward. When pH is controlled at 8-9, PAM concentration is 0.1%, PAM dosage is 0.02%, the F-con- tent in clear liquid keeping at less than 10 mg/L as prescribed in the national discharge standard can be assured. In the new process, 80% of reclaimed water can be circulated and reused, and 20% of reclaimed water should be dis- charged, reaching the standard. The main ingredient of filter residue is CaF2, which can be circulated and recovered after drying. As a result, the materials utilization rate has an increase by about 2.4%, so as to realize the goal of treating waste with waste, and recvclin economy, having remarkable economic and social benefits.

关 键 词：电石渣 含氟酸性废水 中水回用 

分 类 号：X703[环境科学与工程—环境工程]