The effects of contamination removal were researched to treat municipal wastewater by biodegradation enhanced with adding spherical fillings in integrated vertical-flow infiltration systemIVIS.

• 球形填料通过提高系统的硝化活性,增加对氨氮的降解转化效率,同时生物量的大小,也是影响氨氮的降解转化效率的重要因素。