锌冶炼污酸二相硫化-反渗透-电渗析深度处理技术的研究与应用
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摘要
云锡文山锌铟冶炼有限公司污酸深度处理采用国内独有的二相硫化-中和-反渗透-电渗析工艺,设计污酸处理量700 m~3/d,系统投产后运行平稳,危废渣量由初步设计传统工艺的10万t/a减至2万t/a,配套渣库规模由50万m~3缩减至14.5万m~3,节约渣库建设费用1.8亿元,每年运行成本节约100万元。全系统处理后废水实现全部回用,节省新水用量,实现了湿法炼锌的零排放。
The Yunxi Wenshan Zinc and Indium Smelting Co.,Ltd.adopts the unique domestic two-phase sulfurization-neutralization-reverse osmosis-electrodialysis process to treat waste acid.The designed treatment capacity of waste acid is 700 m~3/d,and the system runs smoothly after commissioning.The amount of hazardous waste slag has been reduced from 100 000 t/a to 20 000 t/a.The scale of auxiliary slag stockyard has been reduced from 500 000 m~3 to 145 000 m~3.The construction cost of slag stockyard is saved by 180 million yuan,and the operation cost is saved by 1 million yuan every year.In the whole system,the treated wastewater can be reused completely,the amount of fresh water can be saved,and the zero discharge of zinc hydrometallurgy can be realized.
The Yunxi Wenshan Zinc and Indium Smelting Co.,Ltd.adopts the unique domestic two-phase sulfurization-neutralization-reverse osmosis-electrodialysis process to treat waste acid.The designed treatment capacity of waste acid is 700 m~3/d,and the system runs smoothly after commissioning.The amount of hazardous waste slag has been reduced from 100 000 t/a to 20 000 t/a.The scale of auxiliary slag stockyard has been reduced from 500 000 m~3 to 145 000 m~3.The construction cost of slag stockyard is saved by 180 million yuan,and the operation cost is saved by 1 million yuan every year.In the whole system,the treated wastewater can be reused completely,the amount of fresh water can be saved,and the zero discharge of zinc hydrometallurgy can be realized.
引文
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[2]应国民,李庆超,阴树标,等.铜冶炼污酸处理技术现状及发展趋势[J].矿冶,2016,25(4):68-72.
[3]陈雄.冶炼烟气制酸污酸处理技术研究[J].科技创新,2015(7):25-26.
[4]魏扬城,周志红,何志强,等.反渗透水处理设备在污水处理中的应用[J].中国卫生工程学,2005,4(4):246-248.
[5]刘双进.污水处理新技术(反渗透和超滤)[M].北京:海洋出版社,1985.
[6]范工业,史昌明.电渗析水处理工艺的技术改进[J].工业用水与废水,2006(4):54-56.