Additional information

The WETWINE treatment system consists of two treatment lines, one for water and another for sludge and it follows three steps. The process starts in a HUSB anaerobic digester with two functions: retention of the solids and the hydrolysis of compounds that are difficult to biodegrade into simpler ones. The outcomes of this step are wastewater and sludge.



The resulting water then circulates through a series of vertical and horizontal wetlands planted with reeds. Here the wastewater is treated through various biological processes to obtain an effluent suitable for discharge or even for irrigation.



The wetlands proposed for this step are subsurface flow wetlands, where water circulates underground through layers of sand, gravel and stone, and in contact with the roots of the plants that decontaminate the water.



In parallel, the solids retained in the HUSB reactor are treated in sludge wetlands where, by means of physical (drying) and biological (mineralization) processes, the sludge volume reduces significantly and possible pathogenic organisms are eliminated, obtaining a product that will be used as fertilizer in the vineyard.