Abstract
The purification efficiency of biological removal of iron and manganese was probed by pilot tests. In this experiment, the raw water were iron concentration of 0.96~5.56 mg/L, manganese concentration of 0.87~2.38 mg/L, dissolved oxygen of 2~4 mg/L, pH value neutral. In the condition of filter speed of 6 m/h, the average removal rate of iron and manganese reached 97.6% and 90.9% respectively, the effluent concentration of Fe2+ and Mn2+ were keep in below 0.1 mg/L.
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