A skimmer had to extract organic waste and substances like lipides, uric acid, peptides and amino acid in the closed water system by a physical way.

The intention of the skimmer is, to create very small microbubbles.

The smaller the bubbles the bigger is the surface between air and water and the bigger is the area where organic compound could attach. Until now for this often so-called needle wheels were used quite successfully, which smashed the sucked in air/water mixture with your 2-3mm thick pins.