M Mectan™ The Mectan™ vortex grit system is a circular chamber that takes full advantage of the tangential inflow velocity along the peripheral wall of the chamber to assist in the grit removal process. Screening and Separation METCLEAN™ A patented process capable of removing heavy metals (arsenic, cadmium, lead, zinc, nickel, iron, manganese, arsenic, uranium etc.) from different types of water, including industrial wastewaters. Adsorption S SAM™ Type GDS The SAM™ grit dewatering screw is designed to provide easy and efficient separation of the grit from the liquid matrix, using an air or cyclone separator. Screening and Separation