Self-made laboratory simulation constructed rapid infiltration system for school water stations in wastewater treatment was studied.Results showed that the system ran satisfactory in removing COD,TN and TP,with the maximum removal efficiency of COD as 91.5% ,TN 66.0% and TP 73.3% in three cycles of surface soil.The best conditions for introduction of surface soil as a filter was determined,with filter height of 50cm,water distribution for two days flooded and four days drying.In addition,the effect of compl...