Study on the control technology of urban runoff pollution by zeolite infiltration
沸石渗滤床在城市初期雨水径流污染控制的应用研究

Urban runoff pollution is serious especially for earlier runoff which features high load and impulse attack exert great impact on the urban water environment and its major pollutants COD and N/P are linearly correlated with SS,based on which the paper focused on the control technology of major pollutants COD and N/P of first flush.A demonstration project of artificial zeolite infiltration system was developed to enhance the control and treatment of urban rain runoff.The results indicated that the system efficiently removed NH3-N,TP and COD,among which the removal of NH3-N showed the best performance,the influent concentration of 2~5 mg/L,the effluent concentration is less than the one that is stipulated by the class IV of national surface water environmental quality standards(NH3-N≤0.5 mg/L).