VIDEO A denitrification filter system at river Lethe (Germany)

07 December 2021 - Published by Charlotte Boeckaert
The high nitrate concentrations in the river Lethe (Lower Saxony, Germany) threatens the biodiversity in the Ahlhorner Fischteichte nature area. OOWV, the local drinking water supplier, set up a field test to denitrify the water and stop the nitrate problems in this natural area.

The pilot filter system is a combination of a reed bed and a so-called moving bed bioreactor filter.