沸石渗滤床在城市初期雨水径流污染控制的应用研究

根据城市初期雨水径流的污染负荷初始冲刷效应以及主要污染物COD和N/P与SS成线性相关性的污染特点,对初期雨水的主要污染物COD和N/P开展了控制技术研究。以示范工程为基础,研究城市初期雨水径流污染控制的强化处理技术即沸石渗滤床技术,运行结果表明,对NH3-N、TP、COD都有较好的去除效果,其中对NH3-N的去除效果较为明显,进水氨氮浓度在2～5 mg/L,出水都能达到地表IV类水标准(NH3-N≤0.5 mg/L)。

Study on the control technology of urban runoff pollution by zeolite infiltration

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).