Based on the characteristic and limitation of rapid infiltration system, and in view of this situation of RI system land using, this paper puts forward a new method that will reduce the land use of RI system by using artificially filling, promoting hydraulic loading,and accelerating percolation rate of wastewater in the system. The problems such as quality change of effluent, medium clog and investment increase, which are caused by promoting of hydraulic loading,are analyzed. The test in Zhuozhou shows that...