Experimental Study on Using the Process of Modified Fly Ash and K_2FeO_4 to Treat Papermaking Wastewater

Potassium ferrate (K2FeO4)was used to treat papermaking wastewater that had pretreated by modified fly ash,which formed the new water treatment process of modified fly ash and K2FeO4. The dosage of modified fly ash was 35g/100L and the doping dosage of K2FeO4 was 25mg/L,under which the treatment effect of papermaking wastewater was optimal. The supernatant liquid was treated by the 10mg/L amount of K2FeO4,which is the best procedure.The effluent quality reached water standard of paper industry.