Storage

STORAGE

  • The storage of water in large open reservoir is practiced principally as a water conservation project and it also fulfils an important function as a water purifier.
  • Sedimentation of suspended matter results in the removal of turbidity and sedimentation also carries down with it an appreciable quantity of organic contaminants.
  • Exposure to sunlight and the oxygenation of the water by respiring algae effect the removal of many pathogenic and other organisms.
  • Although algal growth is confined to the surface layer, the oxygen introduced into the water through its agency diffuses downward, raising the oxygen content of the middle layer.
  • The bottom of the reservoir is frequently devoid of available oxygen and is the site of anaerobic decomposition of organic materials.
  • To avoid the removal of the tainted water from the bottom of the reservoir, and the filter blocking algae from the surface, means are usually provided for drawing off water from the reservoir at points between these layers.
Last modified: Wednesday, 9 March 2011, 9:25 AM