Base insulation is carried out so as to prevent the drain waste waters in disposal site from mixing with the soil and underground waters. The mineral layer where the permeability in sanitary landfills is 1*10ˉ8 at most can be fully maintained by laying 16/32 distributed layers of pebbles in the form of geo-membrane, geo-textile and drainage layers finally. The purpose of creating all of these levels is to prevent the earth and underground waters by preventing the hazardous materials from mixing with the underground waters. The drain waste waters forming at such sanitary landfills are collected by the pipes laid when the base insulation is being carried out. Since the pipes are laid in line with the inclination of the land, there are no issues incurred by due to the collection of drainage waters or their flow to the collection containers or treatment facilities. Treatment systems are established in order to stop drainage waters from damaging underground waters or soil. The studies carried out on drainage waters sets forth that these waters may be treated with various ways of treatment.
