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针对油田回注水中Fe2+影响悬浮固体含量的问题，本文采用活性材料催化氧化并辅以截留分离的方法，除去水中的Fe2+。考察了活化时间、材料厚度及过滤速度等因素对除铁效果的影响。实验结果表明：活性材料在活化时间6天、活性材料厚度0.8 m、过滤速度0.1 L/min条件下，能够有效去除水中Fe2+，其含量由10 mg/L降低至0.1 mg/L以内。在油田现场回注水处理时，可将水中的Fe2+含量由0.6 mg/L降低至0.05 mg/L，有利于降低水中悬浮固体含量。
In view of the Fe2+ in the reinjection water affected the content of suspend solid, the writer used the reactive material to oxidize and catalyze the Fe2+, and researched the influential factors of iron removal, such as reactive time, the thickness and the current velocity. The results showed that the reactive material removed the Fe2+ and was reduced to 0.1 mg/L from 10 mg/L when its reactive time was 6 days, the thickness was 0.8 m and the current velocity was 0.1 L/min, which was good for reducing the content of suspend solid.