| 从国家危险废物标准角度思考硫酸厂酸性废水处理技术 |
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| 引用本文： | 易求实,李敦顺.从国家危险废物标准角度思考硫酸厂酸性废水处理技术[J].硫酸工业,2009(2):39-44. |
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| 作者姓名： | 易求实 李敦顺 |
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| 作者单位： | 1. 武汉清流科技有限公司,环境技术研究所,湖北,武汉,430064
2. 大冶有色金属公司,湖北,黄石,435005 |
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| 基金项目： | 武汉市科技局科技攻关计划 |
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| 摘 要： | 介绍了硫酸厂含砷、镉危险固体废物的可能来源，并详细分析了石灰法、石灰-铁盐法、硫化法加石灰-铁盐法等酸性废水处理技术的特点和存在问题。从国家危险废物标准角度提出改进硫化法加石灰-铁盐法设计，采用间歇式反应器替代连续式反应器进行硫化反应。处理后废水中ρ（As）平均2．25mg／L、除砷效率99．96％到接近100％，ρ（Cd）平均7．77mg／L、除镉效率93．63％-99．36％；产生的硫化物渣中的砷、镉可回收利用，含铁盐石膏渣中砷、镉等有害物质含量低于GB5085．6—2007标准规定限值，可直接用作建筑材料。
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| 关 键 词： | 硫酸生产 酸性废水 砷 镉 危险废物 |
Consideration on treatment technology of acidic wastewater in sulphuric acid plant from the national emission standards for hazardous waste |
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| Yi Qiushi,Li Dunshun.Consideration on treatment technology of acidic wastewater in sulphuric acid plant from the national emission standards for hazardous waste[J].Sulphuric Acid Industry,2009(2):39-44. |
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| Authors: | Yi Qiushi Li Dunshun |
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| Affiliation: | 1.Research Institute of environmental technology;Wuhan Qingliu Technology Co.;Ltd.;Wuhan;Hubei;430064;China;2.Daye Nonferrous Metal Co.;Huangshi;435005;China |
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| Abstract: | The possible source of arsenic-and cadmium-containing hazardous solid waste in sulphuric acid plant are discussed and the features and existing problems of some acidic wastewater treatment processes such as lime method,lime-ferric salt method and sulphidation method with lime-ferric salt method are analyzed in detail.The improved design of sulphidation method with lime-ferric salt method is proposed from the national emission standards for hazardous waste hazardous.When sulphidation reaction is carried out ... |
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| Keywords: | sulphuric acid production acidic wastewater arsenic cadmium hazardous waste |
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