电絮凝-流态化微电解耦合法处理铅锌冶炼废水中铅氟

发布时间：2018-04-13 14:01

本文选题：电絮凝 + 微电解　；参考：《水处理技术》2016年11期

【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、pH 4.0、水力停留时间30 min、铁炭投加量45 g、电压5 V、铁炭粒度20~27目时,电絮凝-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(GB 8978-1996)一级标准值。
[Abstract]:The electroflocculation-fluidized micro-electrolysis method was used to treat lead-zinc smelting wastewater. The effects of pH, hydraulic retention time, iron and carbon dosage, voltage, iron and carbon particle size on the removal rate of lead and fluorine ions in the wastewater were investigated.The effects of different electrode materials, different electrode number and plate spacing were compared.The results show that aluminum electrode has better treatment effect on lead-zinc smelting wastewater.Under the optimum technological conditions (considering the cost of energy consumption, such as pH 4.0, HRT 30 min, iron and carbon dosage 45 g, voltage 5 V, iron and carbon particle size 20 ~ 27 mesh), four aluminum electrodes are used.The electroflocculation-fluidized micro-electrolysis coupling method has the best effect on the removal of the ions in the wastewater, and in the treatment of the actual lead-zinc smelting wastewater,The removal rate of lead and fluorine reached 99.9 and 82.7 respectively. The residual concentrations of various ions were lower than the first grade standard of wastewater discharge standard GB8978-1996.
【作者单位】：昆明理工大学环境科学与工程学院;绥和工业大学化学工程学院;
【基金】：昆明理工大学分析测试基金资助项目(20150489)
【分类号】：X758

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