人工快速渗滤系统中人工快渗池对污染物的去除效果研究

Study on the contaminant removal efficiency of rapid infiltration pond in constructed rapid infiltration system

为了阐明人工快速渗滤系统中人工快渗池对污染物的去除效果,对深圳市某污水处理厂的人工快渗池进、出水各项水质指标进行了全面研究。结果表明,该人工快渗池进水水质波动不大,出水水质稳定且良好,对COD和BOD5均有良好的去除效果;NH3-N去除率在97%以上,硝化作用很强,NH3-N在硝化菌的作用下几乎全部被氧化成硝态氮;SS去除率在90%以上,TP去除率在40%～70%。研究结果有助于系统地了解人工快渗池在整个人工快速渗滤系统中所发挥的作用,为提高人工快速渗滤系统的除污能力提供了理论依据。

In order to demonstrate contaminant removal efficiency of rapid infiltration pond in constructed rapid infiltration （CRI） system, influent and effluent water quality in rapid infiltration pond in a sewage treatment plant （Shenzhen, China） was comprehensively studied. The results illustrated that the parameter of water quality in influ- ent showed less fluctuation, and quality of effluent could match the standard demands and relatively steady. The CRI pond could achieved perfect COD and BoD~ removal efficiency. The removal efficiency of NH3-N was more than 97%. Nitrification of CRI pond was very strong; almost all ammonia nitrogen was oxidized to nitrate under the action of nitrobacteria. The removal efficiency of SS was more than 90%, and that of TP was ranged 40%-70$. This study contributed to a comprehensive understanding of the function of rapid infiltration pond in CRI system, and provided a theoretical basis to improve the contamination removal capacity of CRI system.