摘要
以贵溪冶炼厂废水处理工艺为例,研究了铁离子对外排水指标的影响,并结合生产实际,用硫化滤液对废铁进行溶解,提升废酸铁离子浓度。实施后,石膏滤液Fe^(2+)由44mg/L上升到200mg/L,外排水含砷由0.07mg/L降低至0.02mg/L,年节约生产成本54.6万元,取得了良好的效果。
In this paper, taking Guixi smelter wastewater treatment process as an example, studied on the influence of iron ion external drainage index, and combined with the actual production; the iron sulfide was dissolved by filtrate, improved the waste acid concentration of iron ion. After implemented operation, the Fe^2 ＋ contained in gypsum filtrate was raised from 44mg/L to 200mg/L, and the arsenic contained in drainage wastewater removal ratio was reduced from 0.07mg/L to 0.02mg/L.The annual production cost was saved by 546,000 RMB, and good results were achieved.
出处
《铜业工程》
CAS
2017年第4期82-84,共3页
Copper Engineering
关键词
FE^2+
除砷
废铁
硫化滤液
外排水
Fe^2＋
arsenic removal
scrap iron
sulfide filtrate
external drainage
