高铁酸盐对焦化废水中COD、NH_3-N的处理效果的研究

Study on the Effect of the Ferrate Concentrations in the Removal of NH_3-N and COD

高铁酸盐加入量对COD和NH3-N去除效果的实验结果表明:在常温下,当高铁酸盐的加入量为14mg/L时,焦化废水中COD的质量浓度由320mg/L下降到88mg/L,去除率达72.5%;NH3-N质量浓度由68mg/L下降到14.9mg/L,去除率达78.1%。

The study examined the effect of the ferrate concentrations in the removal of NH3-N and COD.The results indicated that the NH3-N content in the coking wastewater after second-stage treatment were reduced from 68 mg/L to 14.9 mg/L when the ferrate concentration was 14 mg/L at pH of 7 and reactive temperature pf 25 ℃.The COD concentration was decreased from 320 mg/L to 88 mg/L and removal rate reached to 72.5%.