高铁酸钠合成及对污水处理的研究

Study on Synthesis of Sodium Ferrate and Its Application in Sewage Treatment

采用次氯酸钠和硫酸铁为原料，在强碱性条件下制备高铁酸钠溶液。实验结果表明，以次氯酸钠40mL计，高铁酸钠制备溶液制备的优化条件为：硫酸铁2．8g，氢氧化钠17．5g，反应时间60min，反应温度40～45℃。污水处理曝气池出口水样经实验条件下合成的高铁酸钠溶液处理后，其COD和SS值分别降低了48．5％和91．7％，效果显著。

Sodium ferrate was synthesized from sodium hypochlorite and ferric sulfate under strong base condition. The experiment results show that the optimum conditions are as follows： sodium hypoehlorite 40 mL, ferric sulfate 2.8 g, sodium hydroxide 17.5 g, reaction time 60 min, reaction temperature 45 ℃. The water sample from sewage treatment aeration tank outlet was treated by sodium ferrate synthesized under the optimum conditions, COD and SS were decreased by 48.5% and 91.7% respectively.