新疆某选厂选矿废水处理及回用试验研究  

Study on Treating and Recycling of Dressing Wastewater from a Plant of Xinjiang

作　　者：吴斌[1] 王军[1] 刘成龙 WU Bin;WANG Jun;LIU Chenglong(Northwest Institute of Mining and Metallurgy,Baiyin Gansu 730900, China;School of Chemistry and Chemical Engineering, Ningxia Normal University,Guyuan Ningxia 756000,China)

机构地区：[1]西北矿冶研究院,甘肃白银730900 [2]宁夏师范学院化学化工学院,宁夏固原756000

出　　处：《有色金属（选矿部分）》2019年第4期16-21,共6页Nonferrous Metals（Mineral Processing Section）

基　　金：宁夏重点研发计划一般科技项目(2018BEE03021)

摘　　要：研究了新疆某选厂选矿废水的处理方法,并对处理后的废水进行了选矿验证试验。确定采用“化学氧化还原法+中和沉淀法+活性炭吸附法”联合处理选矿废水。结果表明,当初始废水pH值在2左右,FeSO 4·7H 2O投加量为理论值,石灰乳调节溶液pH值于7~8,活性炭的投加量为0.3 g/L时,废水中重金属以及COD的去除率最高。处理后的选矿废水中Cr、Cu、Pb以及COD的含量均低于国家污水排放标准,选矿验证试验结果表明,处理后的废水可循环利用。This article makes a study of method to treat waste water from a mineral processing plant of Xinjiang and makes a test to reuse treated waste water for ore dressing. The “chemical oxidation reduction, neutralization precipitation, and activated carbon adsorption” methods are used for the treatment of the wastewater. The results show that when the initial pH value of wastewater is about 2, and FeSO 4·7H 2O dosage is the theoretical value. The pH value was adjusted from 7 to 8 with lime milk, and the activated carbon dosage is 0.3 g/L, when the removal rates of heavy metals and COD are the highest . The contents of Cr, Cu, Pb and COD levels in are all lower than the national sewage discharge standard. The validation test of mineral processing indicats that the treated wastewater can be recycled.

关 键 词：选矿废水 硫酸亚铁 氧化还原反应 中和沉淀 活性炭吸附 

分 类 号：TD926.5[矿业工程—选矿]