中国锑工业污染现状及其控制技术研究

Research on Pollution Situation and Control Techniques of Antimony Industry in China

  • 摘要: 对我国锑工业各生产过程产排污及其治理现状进行了系统调查,并重点分析了水污染水平及控制技术的现状与问题。研究表明,锑工业采矿过程废水处理水平低,水量、水质波动大;选矿过程产生废水未经预处理直接排放,排入尾砂坝废水的锑浓度高达11.92 mg/L;冶炼过程产生废水主要为小企业冲渣废水与冷却水、生活污水的混排,此外,冶炼过程中还存在鼓风炉外排烟气SO2不达标、烟气重金属未有效处理和砷碱渣露天堆存等问题。建议加强清洁生产审核,强化各类废水管理,提高水的循环利用率及砷碱渣和废矿石的综合利用。

     

    Abstract: The current situation of pollutant generation and emission as well as its treatment of antimony industry in China was systematically investigated. The level of water pollution and the status existing problems of control techniques were analyzed. The research showed that the treatment level of the mining wastewater of antimony industry was low and the fluctuation of the wastewater flow and quality was vast. When the wastewater was not pre-treated, the concentration of the emission into the tailing dam was as high as 11.92 mg/L. The wastewater from smelting process was mainly smelt slag wastewater mixed with cooling water and domestic sewage in small factory. In the smelting process, there were other problems, e.g. sulfur dioxide emission from blast furnaces not reaching national standard, heavy metals in the flue gas having not effectively treated, and arsenic and alkali slag being stockpiled in open-air mode, etc. It was suggested that the cleaner production audits should be strengthened and management on the various wastewaters be enforced to improve the water recycling rate and the comprehensive use of arsenic residue and waste ore.

     

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