摘要
以两种途径研究了混凝沉淀法对湖南某多金属矿选矿废水COD去除的可行性。用聚合硫酸铁(PFS)、七水硫酸亚铁为水处理剂,分别在总尾矿矿浆和尾矿库出水中考察初始pH值,混凝剂种类及药剂用量等因素对选矿废水COD去除的影响。结果表明,在总尾矿矿浆中加入聚合硫酸铁1 g/L,COD由186降至121 mg/L,或在尾矿库出水中控制初始pH值为7～9,加入七水硫酸亚铁500 mg/L,COD由135降至88 mg/L。以第一种方案进行工业试验,取得了良好指标,排水pH值为6～9,COD <100 mg/L,达到污水综合排放标准(GB8978-1996)一级标准的要求。
Two schemes were used to study the feasibility of coagulation and sedimentation method for COD removal from a mineral processing wastewater from a multi-metal mine in Hunan Province. Polyferric sulfate( PFS)and ferrous sulfate heptahydrate were used as water treatment agents in the total tailings. The effects of initial pH,coagulant types and dosage of pharmaceuticals on COD removal of mineral processing wastewater were investigated.The results showed that the addition of polyferric sulfate was 1 g/L,the COD decreased from 186 mg/L to 121 mg/L. Or the initial pH in the tailings reservoir was 7 ~ 9,adding ferrous sulfate heptahydrate 500 mg/L,COD decreased from 135 mg/L to 88 mg/L. The author uses the first program to carry out the industrial test,and achieved good indicators. The drainage pH was 6 ~ 9,COD below 100 mg/L. To achieve comprehensive wastewater discharge the first standard requirements.
作者
曹学锋
吴江求
孟祥松
孙伟
CAO Xuefeng;WU Jiangqiu;MENG Xiangsong;SUN Wei(School of Minerals Processing & Bioengineering,China University of Central South, Changsha 410083,China)
出处
《有色金属（选矿部分）》
CAS
北大核心
2019年第1期67-72,共6页
Nonferrous Metals（Mineral Processing Section）
关键词
选矿废水
COD
石灰
聚合硫酸铁
七水硫酸亚铁
mineral processing wastewater
COD
lime
polyferric sulfate
ferrous sulfate heptahydrate
