Lake - Blankensee
The application of Phoslock to the Blankensee was undertaken by the Phoslock licensee for Germany, Bentophos GmbH, in December 2009. The project, which involved the application of 66 tonnes of Phoslock to the lake, was jointly funded by the Federal State of Schleswig Holstein and the City of Lübeck
The Blankensee is a shallow lake located immediately to the south of Lübeck Airport in Northern Germany with a maximum depth of 2.7m and a surface area of 22.5 hectares. Water quality in the lake had deteriorated over many years as a result of high nutrient inputs from surrounding agricultural land, waste water and the neighbouring airport. Although these inputs have now been controlled, internal phosphorus loadings in the lake remained high and the lake has frequently suffered from poor water quality.
The application of Phoslock was designed to bind approximately 600 kg of phosphorus from both the water column and sediments.