摘要
采用化学沉淀剂和有机高分子絮凝剂构成的复合絮凝剂处理含有铁、钴、锰和银4种元素的模拟核电废水,pH调节为8.0~9.0,PAM与PAAS的配比为2∶1。试验结果表明:复合絮凝剂组合NaOH+PAM+PAAS组成稳定、均质,对铁、钴、锰3种元素的去除效果达到90%,对银的去除率也可达到80%。复合絮凝剂对元素的总体去除效果与移动电流有一定的相关性,当移动电流在-9.9^-33.3区间变化时,铁、钴、锰、银4核素总去污因子>100。
The simulated radioactive wastewater is treated by a series of composite coagulants,which is composed of chemical compounds and organic polymer flocculants. The results indicate that,when pH value is adjusted at 8. 0- 9. 0 and the ratio of PAM to PAAS is 2∶ 1,the elements of Fe,Co,Mn and Ag can be removed effectively by NaOH ＋ PAM ＋ PAAS. The removal efficiencies of Fe,Co,Mn reach 90%,which is much higher than that of Ag（ 80%）. On other hand, the total removal efficiency of pollutants is higher than 100,when the streaming current value of simulated wastewater is between- 9. 9 to- 33. 3.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第5期82-84,86,共4页
Modern Chemical Industry
关键词
复合絮凝剂
模拟核电废水
流动电流
composite coagulants
simulated radioactive wastewater
streaming current
