Willow has often been used in various types of root zoning systems. It is vital that high-performing varieties are chosen, whose rapid growth and dense foliage ensure extensive water absorption and transpiration. The Danish Centre for Recycling recommends cuttings from Nordic Biomass, and you can read more about the principle of willow wastewater treatment plants
on the homepage. The Danish EPA has carried out a study on these types of plants, which you can read about here. |
