摘要
针对高浓度含砷酸性废水经石灰—铁盐法处理后仍未达标的情况,本文探索了石灰铁盐法处理后液加入聚合硫酸铁（PFS）＋聚丙烯酰胺（PAM）混凝沉降除砷的工艺研究,以及在石灰铁盐法处理高浓度酸性废水过程中加入漂白粉、高锰酸钾等氧化剂氧化除砷的工艺研究,结果表明,PFS＋PAM混凝沉降除砷工艺、漂白粉或高锰酸钾氧化除砷工艺均可实现达标排放,但PFS＋PAM混凝沉降除砷工艺具有絮凝沉降速度快,操作简单、处理成本更低的优点,其新增药剂成本比漂白粉、高锰酸钾分别节省约6元/m3、50元/m^3。
The paper research on treatment technology of acidic wastewater with high concentration arsenic,Only by lime ferric salt process,it has not yet reached the national emission standards. Addition of bleaching powder or potassium Permanganate oxidation of arsenic removal process can achieve the standard discharge. By using polymeric ferric sulfate and polyacrylamide coagulation sedimentation process, it is also can achieve standard discharge with the advantages of fast settling velocity, simple operation and lower cost, Its new reagent cost saved about 6 yuan（RMB）、50 yuan（RMB） per cubic wastewater, than adding bleaching powder,potassium permanganate.
出处
《世界有色金属》
2016年第10期19-23,共5页
World Nonferrous Metals
关键词
酸性废水
砷
聚合硫酸铁
聚丙烯酰胺
混凝
acid waste water
arsenic
polymeric ferric sulfate
polyacrylamide
coagulation
