This paper describes a simulated study on the sewage treatment.A constructed rapid infiltration system was made in this laboratory.The results show that COD_(Cr),TN,TP of this set of laboratory have good removal eff ciency.The removal of the surface soil of the maximum COD_(Cr)for 93.7%,TN for 69.2%,TP for 83.4%;the removal of zeolite of the maximum COD_(Cr)for 86.4%, TN for 45.1%,TP for 55.3%;the removal of ceramsite of the maximum COD_(Cr)for 74.4%,TN for 37.9%,TP for 38.4%.According to the experimental r...