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WATER POLLUTION and CONTROL

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Academic year: 2021

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Eutrophication is a process by which a water body slowly becomes rich in plant nutrients such as nitrates and phosphates due to soil erosion and run off from the surrounding land.

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Increasing human population, intensive agriculture and rapid industrial growth have led to an increasing release of domestic waste, agricultural residues, industrial wastes and land run-off into various water bodies.

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• Dissolved oxygen is consumed in eutrophication process.

• More and more organic matter enters a water body, more is the deoxygenation of the water body and larger is the production of nutrients. These nutrients fertilize an anourmous growth of algae and other large water plants.

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Oligotrophic

• Unenriched, clear water that supports small

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Eutrophic-• Slow-flowing stream, lake or estuary enriched by

inorganic plant and algal nutrients such as phosphorus

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Eutrophication of a water body results due to the release of large amount of nutrients by the action of aerobic bacteria on organic wastes entering a water body naturally or by human activity.

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