M MACRO POROUS POLYMER EXTRACTION (MPPE) Veolia Water Technologies MPP Systems has developed a one step process that will remove both dissolved and dispersed hydrocarbons from water. Adsorption 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