两种不同填料的BAF工艺处理微污染河水的效果研究

随着经济的发展，人民生活水平的提高，城市河道水体污染加剧，为环境带来压力，因此研究微污染水体的治理及恢复有着重要的意义。本实验以校园内河水为水源，选取2种合适的填料作为BAF工艺滤柱的填料来研究在自然条件下COD浓度为50～100mg／L，NH＋4-N浓度为6～10mg,／L微污染的校园河水的去除效果。结果表明，利用沸石作为填料去除COD、总氮和NH＋4-N的效果较陶粒相对更好；此外，本研究作为去除微污染研究的一部分，挂膜的顺利进行与另外一些外界因素有关系，如温度等。

Research on Treatment of Slightly Polluted River Water by BAF Process with Two Different Fillings

With rapid economic development and improvement of living standards, the pollution of urban river water has be- come more severe, bringing more pressures on the environment. Therefore, the research on treatment and recovery of slightly pol- luted water has great significance. Taking campus river as water source, two kinds of fillings were selected for the filtration column of BAF to research the removal result of slightly polluted water with COD 50 - 100 mg/L and NH＋4 - N 6 - 10 mg/L. The results show that zeolite has better removal rate than ceramsite on COD, total nitrogen and NH＋4 - N. In addition, biofilm formation has a relationship with some external factors, such as temperature.