Ways to prevent river pollution

Answer 1

PREVENTION OF RIVER WATER POLLUTION

We can prevent pollution in river water in many ways and some of them are as follows:

• not discharging untreated sewage and other industrial waste water into rivers
• not dumping solid wastes, garbage and medical wastes in river banks
• not using river banks as open toilets
• not disposing dead human bodies/animal carcasses in rivers
• not quarrying sand in river beds which is a key factor in river bank stability and erosion of banks
• not washing vehicles directly in the flowing river water
• and in many other ways according to the life style of local people

River pollution can be controlled by:

• Reducing agricultural run-off
• Preventing or treating industrial discharges
• Preventing or treating municipal sanitary sewage discharges
• Preventing or treating municipal storm water discharges
• Preventing or controlling resource recovery in river channels
• Controlling shipping (ballast, swage) discharges
• Controlling marina operations
  

1. Most fresh water pollution is caused by organic material. Humans bring organisms from one body of water to another causing aquatic plants and animals to die. Littering, sewage, food waste and farm effluent also cause under water plants and animals to die.
2. Some other kinds of water pollution are industrial waste, fertilisers, oil and warm water. If large amounts of fertiliser or farm waste drains into a river or lake, the algae uses these substances to grow rapidly, turning the water green. Chemical waste is sometimes discharged into lakes and rivers. Some of these pollutants include: cyanide, zinc, lead, copper, cadmium and Mercury. If oil enters either a slow moving river or a lake, it causes the surface to turn rainbow colours which prevents oxygen from entering the water. Industry often uses water for cooling processes, sometimes discharging warm water back into rivers or lakes. Making the water warmer makes the level of dissolved oxygen lower.
   

Answer 2

We should not throw the domestic wastes into rivers. We should not take bath and wash clothes in rivers . Industries should clean the chemical wastes before discharging it into rivers. We should create awareness among other people. Farmers should use manure instead of fertilizers because fertilizers are flow away with rainwater into rivers and caused great effect to aquatic species.