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Landscape filters

The CEO of the Danish Agricultural Agency Jette Petersen cut the green ribbon at the inauguration of the newly established bioreactor with wood chips full scale test facility at Hofmansgave on 26 October 2018. Photo: Janne Hansen
An entry basin and three basins filled with wood chips rinse a large portion of the nitrogen and phosphorous content in drainwater from 120 ha farmland before the water is led into Odense Fjord. Photo: Janne Hansen

2018.10.29 |

Six research bioreactors with wood chips are now in place

Six test facilities have been established in various geo-regions and thereby with various soil and weather conditions, and the research project is now entering a new phase: data gathering.

The guests at the inauguration of the new mini-wetland with biofilter at Gyldenholm Manor were interested in seeing where the water ran in and out, the various measuring units, and the basins containing wood chips. Photo: Janne Hansen

2018.06.21 |

North Europe’s largest biofilter test facility inaugurated

A large constructed wetland with biofilters was inaugurated at Gyldenholm Manor on the island of Zealand.

Nature is good at filtering nutrients from the soil before they proceed further into the aquatic environment. Photo: Janne Hansen

2017.06.02 |

Agriculture must use help from Mother Nature

Nature can give a helping hand to avoid nitrogen loss from agriculture to the aquatic environment. This was one of several important points at an international workshop regarding landscape filters organized by Aarhus University. 

The sod will soon be turned for the establishment of a new full scale mini-wetland with biofilter. Photo: Colourbox

2017.06.02 |

Development of mini-wetlands with biofilters enters new phase

New mini-wetlands with biofilters will be established in the course of the summer and autumn of 2017 with the aim of generating more knowledge and experience regarding this particular measure against nitrogen loss to the aquatic environment.

Several factors must be taken into consideration when calculating which landscape filter system has the best cost efficiency. Photo: Colourbox

2017.06.02 |

What does it cost to remove nitrogen from farmers’ fields?

Nitrogen from farmers’ fields must not end up in the aquatic environment but what is the most cost efficient offsite solution? This question was discussed at an international workshop organised by Aarhus University. 

It is important to include local stakeholders to ensure motivation for implementation of landscape scale measures. Photo: Janne Hansen

2017.05.31 |

Information is not enough – motivation is also necessary

Insight into farmer behavior, information about local conditions, research-based knowledge and appropriate policies must come together for successful implementation of conservation drainage and other landscape scale measures to reduce nutrient losses.

The aquatic environment can be protected from nitrogen leaching with the aid of measures such as biofilters. Photo: Janne Hansen

2017.03.31 |

Biofilters and mini-wetlands can reduce nitrogen leaching

New research results indicate that constructed wetlands with biofilters can be effective measures to reduce nitrogen emissions from field drains to the aquatic environment. The Ministry of Environment and Food of Denmark is supporting further research in the area.