铅锌冶炼重金属废水生物制剂深度处理及协同脱铊工业实践  

Removal of heavy metals and Tl in the wastewater from Pb-Zn smelting by biologicals

作　　者：焦晓斌 于建忠 匡乐意 李文臣 席利丽[1] 王德海 JIAO Xiao-bin;YU Jian-zhong;KUANG Le-yi;LI Wen-chen;XI Li-li;WANG De-hai(Baiyin Non-Ferrous Metals Co.Ltd.,Baiyin 730900,China;Baiyin Honglu Resources Comprehensive Utilization Technology Co.Ltd.,Baiyin 730900,China;Science Environmental Protection Co.Ltd.,Changsha 410000,China)

机构地区：[1]白银有色集团股份有限公司,甘肃白银730900 [2]白银有色红鹭资源综合利用科技有限公司,甘肃白银730900 [3]赛恩斯环保股份有限公司,湖南长沙410000

出　　处：《中国有色冶金》2022年第1期79-82,101,共5页China Nonferrous Metallurgy

摘　　要：某铅锌冶炼厂采用的冶炼原料杂质含量逐渐增加,原有的"石灰-铁盐"工艺处理重金属废水已不能满足回用要求,尤其铊含量超标严重。因此,公司对现有废水处理工艺进行了升级改造,引入重金属废水生物制剂深度处理及协同脱铊工艺。该工艺处理铅锌冶炼废水的较佳工艺条件为一段系统稳定剂0.7 mL/L、生物制剂0.7 mL/L,二段处理系统稳定剂0.3 mL/L、生物制剂0.3 mL/L,在此条件下,处理后的出水重金属及铊含量均稳定达标。该工艺已稳定运行两年,年节省废水处理费用520万元,实现了重金属废水的循环利用及减量化排放,降低了环境风险,为生态环境治理提供了技术保障,具有较大的应用价值。The impurity content of smelting raw material in a Pb-Zn smelter gradually increased, the former “lime-iron salt” process to treat heavy metal wastewater no longer meets the reuse requirements, especially with the thallium content going far beyond the limit. Therefore, the existing wastewater treatment process was upgraded and reconstructed, the process of heavy metal wastewater biologicals for advanced treatment and coordinated thallium removal were introduced into the plant. When using this process to treat Pb-Zn wastewater, the better process conditions are stabilizer 0.7 mL/L and biologicals 0.7 mL/L for the primary treatment system, and stabilizer 0.3 mL/L and biologicals 0.3 mL/L for the secondary treatment system;after treatment under these conditions, the content ofheavy metals and thallium in the effluent is all stable and in compliance with the discharge standards. This process has been stably operated for two years, saving wastewater treatment cost by 5.2 million CNY each year, the goal of resource utilization and reduced discharge has been reached;it has also reduced the environmental risks and provided technical support for bio-environmental governance, and has larger application value.

关 键 词：重金属废水 石灰-铁盐工艺 生物制剂 稳定剂 铊 深度处理 资源利用 减量排放 

分 类 号：TF813[冶金工程—有色金属冶金] X758[环境科学与工程—环境工程]