Case Study: Biological Filtration For Iron And Manganese RemovalSource: Degremont Technologies
By Pierre Mouchet, Manager of Technical Assistance and Information
In an earlier paper, the author reviewed the physical and chemical processes conventionally used to remove iron and manganese from groundwater, and explained how the process most commonly used in France (aeration plus filtration) led to the discovery of coincident biological phenomena. These were subsequently applied to enhance the performance of certain existing units and, especially, to serve as a basis for a new generation of biological treatment plants offering sharply improved performance levels.
These general considerations will be illustrated by a number of examples, selected from among nearly 200 existing facilities.