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HEAVY METAL WATER POLLUTION

HEAVY METAL WATER POLLUTION 

  • A team of scientists found that in COVID-19 pandemic the holy river Ganga shows significant reduction of heavy metal pollution
  •  The research was supported by the Indo-US Science and Technology Forum (IUSSTF), a bilateral organisation under the Department of Science and Technology (DST), Government of India and US Department of States.
  • It is estimated that industrial wastewater contributes nearly 20% of the total volume of wastewater generated in the Ganga basin.                  HEAVY METAL WATER POLLUTION

REDUCTION OF METALS IN GANGA

  • With signs of rejuvenation and a significant improvement on many parameters following the lockdown, the Ganges is much cleaner than its tarnished image according to a report.
  • Inputs from agricultural runoff and domestic sewage like nitrate and phosphate remained almost the same as these sources were not impacted by the nationwide confinement.
  • A reduction in garbage, dirty & smelly water, broken bank made the water look clean and pure.
  • During lockdown the efforts to reduce wastewater from industrial units have reduced the pollution of heavy metals in the Ganga to a large extent in a short time.
  • Researchers found out that the pollution of dissolved heavy metals as cadmium, arsenic, chromium, lead, mercury, iron, nickel, and zinc in the Ganga has been reduced by 50 per cent during the lockdown.

ABOUT HEAVY METALS

  • The environment and its compartments have been severely polluted by heavy metals. Environmental pollution of heavy metals is increasingly becoming a problem and has become of great concern due to the adverse effects it is causing around the world.                        HEAVY METAL WATER POLLUTION
  • Metals are introduced in aquatic systems as a result of the weathering of soils and rocks, from volcanic eruptions, and from a variety of human activities involving the mining, processing, or use of metals and/or substances that contain metal pollutants.
  • Although there is no specific definition of a heavy metal, literature has defined it as a naturally occurring element having a high atomic weight and high density which is five times greater than that of water

 

Environment & Biodiversity

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