铁屑柱处理低浓度含铬废水的实验及应用

介绍一种处理低浓度含铬地下水的方法——铁屑柱法,就该法对去除六价铬的运行时间的影响因素铁屑填充高度、反冲洗药剂、反冲洗次数以及完全失效时间与出水浓度的关系进行了实验,得到了较佳的反应工艺参数,并成功应用于工程实例。结果表明:用铁柱法处理低浓度含铬废水,出水达到国家地下水排放标准。实践证明该工艺投资少,处理成本低,运行简单,效果好。

TEST OF THE TREATMENT OF LOW CONCENTRATION CHROMIUM-CONTAINING WASTEWATER BY IRON FILING-FILLED COLUMN AND ITS APPLICATION

A new method for treating low concentration chromium-containing wastewater by iron filing-filled column is introduced.Aiming at the influential factor of this method on the runtime of removal of Cr(Ⅵ),tests are given to the iron filling height,backwash elixir choice,the number of backwash and the relationship of complete failure time and concentration.Technological parameters of the reactions have been obtained,which were applied to actual projects successfully.The results show that the low concentration chromium-containing wastewater treated by column filling with iron filing can meet the national discharge standard.Practice has proved that the process has less investment,low cost,simple operation and good results.