摘要
采用“电絮凝．流态化微电解耦合法”技术处理铅锌冶炼废水，主要考察了pH、水力停留时间、铁炭投加量、电压、铁炭粒度等反应条件对废水中铅、氟离子去除率的影响，并对比了不同电极材料、不同电极数量和极板间距下的处理效果。研究结果表明，铝电极对铅锌冶炼废水具有更好的处理效果；在最佳工艺条件（考虑能耗成本），即采用四块铝电极、pH4．0、水力停留时间30min、铁炭投加量45g、电压5v、铁炭粒度20～27目时，电絮凝一流态化微电解耦合法对废水中各离子的去除效果最佳；处理实际铅锌冶炼废水时，铅去除率达到了99．9％，氟去除率达到了82．7％，各种离子残留浓度均低于污水综合排放标准（GB8978—1996）一级标准值。
The combined process of ＂electrocoagulation, fluidized bed and micro-electrolysis （EC/FB/ME）＂ was used to treat lead and zinc smelting wastewater. The influence of the experimental conditions, which includes initial pH, hydraulic retention time, mass of Fe/C, applied voltage, and particle diameter of Fe/C, on the removal rate of Pb2＋ and F- ions in the wastewater have been investigated. The removal rates of different materials and number of electrodes have been also considered. The results show that the optimal conditions of the EC/FB/ME process are initial pH 4.0, reaction time 30 min, mass of Fe/C 45 g, applied voltage 4 V, particle diameter of Fe/C 20-27 mesh. Under these conditions, the removal rate of Pb2＋ and F- are 99.9% and 82.7%, respectively. All the heavy metal irons concentrations in the outlet wastewater meet the primary standards of the ＂Integrated Wastewater Discharge Standard＂ （GB8978-1996） in China.
出处
《水处理技术》
CAS
CSCD
北大核心
2016年第11期89-92,共4页
Technology of Water Treatment
基金
昆明理工大学分析测试基金资助项目(20150489)
关键词
电絮凝
微电解
流态化
铅
氟
铝电极
electrocoagulation
micro-electrolysis
fluidized bed
Cd2＋
F-
aluminum electrodes
作者简介
孙晗（1990-），男，硕士研究生，研究方向为水污染控制；电子邮件：sh0323@126．com
联系作者：徐晓军，教授；电子邮件：xuxiaojlln1988@qq．com
