沸石渗滤床在城市初期雨水径流污染控制的应用研究
Study on the control technology of urban runoff pollution by zeolite infiltration
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摘要: 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）。Abstract: 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).
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Key words:
- earlier runoff /
- pollution characteristics /
- control technology /
- demonstration project
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