name the treatment of pollutated water , salt like nitrates and phosphates.

By which treatment of polluted water, salts like nitrates and phosphates are removed?

Name any three water pollutants.

Name the three important water pollutants.

Which of the following statements regarding eutrophication are correct ? (i) Eutrophication is the natural ageing of a lake by nutrient enrichment of its water. (ii) Pollutants from human activities like effluents from the industries and homes can radically accelerate the aging process of a lake. This phenomenon is called as cultural or accelerated eutrophication. (iii) The plant nutrients responsible for eutrophication are nitrates and phosphates. (iv) These phosphates and nitrates accelerate the growth of algae, which utilise oxygen and may deoxygenate the water to kill the fish and other aquatic animals.

Which of the following statements regarding eutrophication are correct ? (i) Eutrophication is the natural ageing of a lake by nutrient enrichment of its water. (ii) Pollutants from human activities like effluents from the industries and homes can radically accelerate the aging process of a lake. This phenomenon is called as cultural or accelerated eutrophication. (iii) The plant nutrients responsible for eutrophication are nitrates and phosphates. (iv) These phosphates and nitrates accelerate the growth of algae, which utilise oxygen and may deoxygenate the water to kill the fish and other aquatic animals.

Secondary treatment for polluted water are ____ and acitivated sludge method.

Name any two water pollutants.

Name to common pathogens in polluted water.

Name the most serious water pollutant

High concentration of nutrients especially nitrates and phosphates in water can accelerate which of the following phenomenon ?