Module V: Environmental Pollution (12 hrs)
Air pollution: Major air pollutants - Oxides of carbon, nitrogen and sulphur - Particulates – London smog and photochemical smog. Effects of air pollution: Acid rain, green house effect and depletion of ozone. Control of air pollution - Alternate refrigerants. Bhopal Tragedy (a brief study).
Water pollution: Water pollution due to sewage and domestic wastes – Industrial effluents –
Agricultural discharge – Eutrophication. Quality of drinking water - Indian standard and WHO standard. Water quality parameters: DO, BOD and COD – Determination of BOD and COD. Toxic metals in water (Pb, Cd and Hg) - Minamata disaster (a brief study). Control of water pollution - Need for the protection of water bodies.
Thermal pollution, noise pollution and radioactive pollution (Sources, effects and consequences) -
Hiroshima, Nagasaki and Chernobyl accidents (a brief study).
Local environmental movements: Silent Valley, Plachimada, Narmada.
Pollution Control Board: Duties and responsibilities.
- Teacher: Dijo Damien