| 电位调控-硫化沉淀联合技术沉淀锌的实验研究 |
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| 引用本文： | 陈明,蔡忠萍,熊琳媛,蔡青云,徐慧.电位调控-硫化沉淀联合技术沉淀锌的实验研究[J].江西有色金属,2014(3):81-85,106. |
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| 作者姓名： | 陈明 蔡忠萍 熊琳媛 蔡青云 徐慧 |
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| 作者单位： | 江西理工大学 江西省矿冶环境污染控制重点实验室,江西赣州341000 |
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| 基金项目： | 江西省对外科技合作计划项目（20133BDH80027）;江西省教育厅青年科学基金（GJJ10154）;江西省博士后科研择优资助项目 |
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| 摘 要： | 采用电位调控-硫化沉淀法对含Zn2+100 mg/L的矿山酸性废水进行深度处理.结果表明,采用10%石灰乳液为中和药剂预先除铁,其用量为7.5~14 mL/L,沉铁时间为30 min,铁的去除率可以达到80%以上;除铁后的溶液采用硫化法沉淀锌,以NaHS为硫化剂,pH值为3.4,PAM用量为1 mL/L,氧化还原电位控制在6~76 mV时,矿山酸性废水中的Zn2+的去除率达到96.85%以上.
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| 关 键 词： | 矿山酸性废水 锌回收 电位调控-硫化沉淀 |
Experimental study on zinc precipitation by potential regulation-sulfide precipitation |
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| CHEN Ming,CAI Zhongping,XIONG Linyuan,CAI Qingyun,XU Hui.Experimental study on zinc precipitation by potential regulation-sulfide precipitation[J].Jiangxi Nonferrous Metals,2014(3):81-85,106. |
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| Authors: | CHEN Ming CAI Zhongping XIONG Linyuan CAI Qingyun XU Hui |
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| Affiliation: | (Jiangxi Key Laboratory of Mining and Metallurgy Enviromental Pollution Control, Jiangxi University of Science and Technology,Ganzhou 341000, China) |
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| Abstract: | Potential regulation-sulfide precipitation are used to treat zinc-containing mine acid drainage with the concentration of 100mg/L deeply. When 10 % CaO is selected as a neutralizing agent to remove iron, （the amount of 10 % CaO 7.5-14 ml/L, precipitation time of iron 30 min）, the removal rate of iron could reach above 80 %. Vulcanization is performed on the de-ironed solution to precipitate zinc using NaHS as the vulcanizing agent, （with the sulfide precipitation zinc pH value of 3.4, the dosing quantity of PAM flocculant of 1mL/L, and ORP of at 6-76 mV）, the removal rate of zinc ions in acid drainage can be over 96.85 %. |
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| Keywords: | mine acid drainage zinc recovery potential regulation-sulfide precipitation |
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