In natural water and wastewater,Fe is normally bonded with humus. Therefore,the removal of iron from a humus complex system is difficult using conventional treatment technologies,such as alkaline precipitation. In this article,Al Cl3 was employed as flocculant to remove water-soluble iron from landfill leachate and fulvic acid complex iron( FA-Fe) simulated wastewater. The FA-Fe removal mechanism by Al Cl3 was also investigated. The results showed three things. With Al Cl3 dosage of 1 g·L~(-1),reaction pH o...