Aluminium hydroxide sludge used as flocculant
The company COMERCIAL E INDUSTRIAL DEL ALUMINIO, SA (COMINAL) is dedicated to the anodizing and electro-coloring of aluminium profiles for the construction industry. The pieces that enter their facilities go through processes of mechanical glazing, chemical degreasing, chemical satin, anodizing, electrocoloring and sealing.
After each of these processes, a water wash is carried out, which generates a large amount of wastewater that must be treated in a physical-chemical treatment plant. The resulting sludge from the process has a composition basically of aluminium hydroxide (20-30%) and water