![](/sites/default/files/reference_icons/US%20EPA%202000a%20Wastewater%20Technology%20Fact%20Sheet%20Trickling%20Filters.jpg)
Short Factsheet on the applicability and design criteria of trickling filters including a lot of information on operation and maintenance (form the United States Environment Protection Agency (EPA).
U.S. EPA (2000): Trickling Filters. (= Wastewater Technology Fact Sheet, EPA 832-F , 14 ). United States Environment Protection Agency URL [Accessed: 03.06.2019]