Limnology

Study on Ganga At Howrah, Shibpur

— by Bishruti C, October 7 2021 —

  • Introduction

The river Ganges also known as Ganga is the Life of West Bengal as well as India due to the wide ranges of services giving by the river Ganga. Now a days, Ganga at West Bengal is becoming the one of the polluted rivers containing the most of the toxic elements and contaminants at a high rate due to the sewage and wastes releasing from the towns and industries at its banks

  • Location

Shibpur, Howrah, West Bengal

  • Present Status

Water Quality

  • Endangered Biodiversity

Rapid biodiversity of the Ganga had revealed that the distribution and density of key aquatic species such as the Gangetic Dolphin,Wallago attu, hilsa, the gharial and the mugger had in earlier years, significantly reduced because the loss of suitable habitat conditions, and change in the river’s morphology due to the construction of dams and barrages, bank alteration, agriculture and sand mining.

  • Pollution
  • Prevention
    • What should we stop?

Ganga contains high coliforms, BOD & suspended solids. So firstly, we should avoid releasing construction waste and the untreated sewage in to lakes. Avoid throwing solid waste, plastic, things made up with metals. Avoid harmful untreated chemicals, hot water and ass released from industries.

  • What should we do?
  • Adsorption: It is the process of solid holds molecules of liquid or solute as a thin film.
    • Chlorination: It is the most widely used disinfectant for the treatment of waste water.
    • Ion exchange: It is the process of demineralization.
    • Chemical extraction :Separation of various water solvent.
    • Membrane separation :Separation of various molecules through membrane, it depends on the pore size and molecular size.
    • Electrokinetics  :It is a procedure of a low-voltage direct-current electric field is applied across a section of contaminated soil to move contaminants.
    • Bioleaching: Removes heavy metals.
    • Phytoremediation: Application of plants to remove wastes from water.
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