Abstract：Activated carbon modified by Metal salts has broad application prospects in water purification.The modified activated carbons from five salts (Al3+, H+, Zn2+, Cu2+, Mn7+) were respectively prepared using the impregnation method, and the adsorption performance of phenol solution by a filtration process was investigated with different modified activated carbon.The results showed that the adsorption performance on modified activated carbons by these different salts gradually decreased in the direction: Al3+>H+>Zn2+>CK>Cu2+>Mn7+.The filter bed of modified activated carbons had a stronger resistance impact on phenol solution.In a lower filtration rate, the purification capacity of modified activated carbon by aluminum salts achieved more than 99% in dealing with low concentrations of phenol solution, and the effluent concentration was lower than 1mg/L.Overall.The effect of this kind activated carbon was superior to the other kind by hydrochloric acids.Therefore, in the depth of water treatment, aluminum salts can be used as one of the main direction of the activated carbon modified.

Keyword：modified activated carbon;adsorption;filtration;phenol;aluminum salts;