The activity of REMA TIP TOP in this environmental protection area is basically the supply of lining systems for the protection of aeration tanks, sludge thickeners, scrapers, waste-water piping and sedimentation baths. The economical benefit associated with the use of REMA TIP TOP lining systems is due to the technology that allows them to be also applied to wet concrete, together with their simple working and rapid hardening. These factors are not only beneficial in the case of new plants, but also reduce maintenance costs. The combination of the high chemical resistance of REMA TIP TOP lining systems and their good mechanical properties with low abrasion values result in very long service lives in industrial effluent treatment works.