含铜铁酸性废水处理硫化氢研究  

Study on Absorption of Hydrogen Sulfide by Acidic Wastewater Containing Copper and Iron

作　　者：熊明瑜 XIONG Mingyu(Zijin Mining Group Co.,Ltd.;State Key Laboratory of Comprehensive Utilization of Low Grade Refratory Gold Ores)

机构地区：[1]紫金矿业集团股份有限公司,福建省龙岩市364200 [2]低品位难处理黄金资源综合利用国家重点实验室

出　　处：《现代矿业》2021年第9期12-15,共4页Modern Mining

摘　　要：为了达到以废治废及节约成本的目的,针对硫化沉淀工艺回收酸性废水中的铜不可避免地产生硫化氢气体的问题,进行了含铜铁酸性废水吸收硫化氢气体试验研究。研究结果表明:采用含铜铁酸性废水吸收硫化沉淀系统产生的硫化氢气体,无论在技术上,还是经济上都切实可行;含铜铁酸性废水吸收硫化氢的过程中,Fe^(3+)发挥着主要作用,可有效氧化硫化氢;建议用三级串联含铜铁酸性废水新水吸收硫化氢气体,之后末端增加一级10%氢氧化钠溶液吸收,可保证尾气中的硫化氢全部被吸收完毕。It was inevitable to produce hydrogen sulfide in the recovery of copper from acidic wastewater by sulfide precipitation process.In order to achieve the purpose of treating waste with waste and saving cost,the test of using copper-iron acidic wastewater to absorb hydrogen sulfide was carried out.The results show that it was technically and economically feasible for copper-iron acidic wastewater to absorb hydrogen sulfide produced by the sulfide precipitation system.Fe3+played a major role in the process of hydrogen sulfide absorption by copper-iron acidic wastewater,which can effectively oxidize hydrogen sulfide.Hydrogen sulfide can be absorbed by"three-stage series copper-iron acidic wastewater+first-stage 10%sodium hydroxide solution"process,which can ensure the concentration of hydrogen sulfide tail gas meet the standard.

关 键 词：硫化氢 含铜铁酸性废水 硫化沉淀 还原反应 

分 类 号：X703[环境科学与工程—环境工程]