Cleaning installation for sand used for water purification, comprises devices for rinsing sand with water and rubbing grains together

摘要

The installation comprises a device (3) for rinsing the sand (Z) with water and a device (4) for rubbing the grains of sand together. A sand washing installation for removing bacteria from sand comprises a device for rinsing the sand with water and a device for rubbing the grains of sand together.