摘要
将高硫煤矸石与铁粉混合在一起加热改性,改性样品按照设定的条件处理含镍废水。实验结果表明:改性高硫煤矸石中的FeS与Ni2+发生沉淀转化反应,生成更难溶的NiS,使得含镍废水得以被处理;高硫煤矸石改性配比、加热时间以及废水的pH值、粒度、反应时间等均对Ni2+的去除率有重要影响。最佳反应条件为:pH值为7,改性配比100∶10,粒度小于0.08mm,加热时间10min,加入量0.2000g,此时Ni2+的去除率接近100%。由于反应后废水的pH值为7,因此,处理后的尾液可以直接排放。
High-sulfur gangue mixed with Fe powder was heated. The modified samples were used to treat waste water containing Ni^2＋, Results showed that Ni^2＋ within waste water was removed when NiS which is harder soluble than FeS formed because percipitation transformation.The removal rate of Ni^2＋ is effected by pH value of waste water, ratio of high-sulfur gangue and Fe powder, grain size, reaction time and heating time. The best condition is that pH value is 7, ratio of high-sulfur gangue and Fe powder 100 ： 10, heating time 10min, 0.2000g gangue, and grain size smaller than 0.08mm. Under such conditions, the Ni^2＋ removal rate approaches to 100%. The solution＇s pH value is about 7, so the waste water can be directly discharged.
出处
《非金属矿》
CAS
CSCD
北大核心
2008年第2期34-36,共3页
Non-Metallic Mines
基金
洛阳市重点资助项目(0602023A-1)
河南省教育厅资助项目(2006430024)
关键词
高硫煤矸石
改性
含镍废水
去除率
high-sulfur gangue
modification
containing Ni^2＋
waste water
removal ratio
