E Escalator™ Perforated stainless steel screen panels are carried on heavy-duty chains and incorporate holes of 6 mm (1/4'') or 3 mm (1/8'') diameter giving fine screening in any direction. Screening and Separation 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 R ROTOPAC™ The Rotopac™ is a simple device for dewatering and compacting the screenings collected on bar screens and fine screens. Screening and Separation