钢铁行业六价铬元素流向分析

来源 :科技成果管理与研究 | 被引量 : 0次 | 上传用户:zimuogu
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根据全国污染普查数据和环境统计数据,结合钢铁行业生产流程和现状,分析了钢铁生产过程中六价铬元素的流向情况。结合钢铁生产环节铬形态与浓度演变分析进行研究,针对六价铬流向的废渣、废水、废气三个领域,完整呈现六价铬元素流向和路径。结果表明,在钢铁生产过程中含六价铬废气来自于以铬渣为烧结原料产生的粉尘和轧钢工序产生的铬酸雾;含六价铬废水来自采选矿废水、以铬渣为烧结原料的水封拉链污水池内、轧钢钝化和电镀过程、不锈钢酸洗废水;含六价铬固废主要来自炼钢和轧钢钢渣、不锈钢渣泥中。其中目前钢铁工业六价铬最主要的产生点为钢铁生产过程中的表面处理工序,包括钝化、不锈钢酸洗,后续治理首先应集中在这两个环节上。
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