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What can you see in the picture . Where do I come from. I. Come from. Rain. River. Lake. Well. Can you drink me. What am I Called . I am called sewage or waste water . I will tell you how I became like this. Ch.18. Waste. Water. Story. What difference c an you see ?.
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I Come from
Rain River Lake Well
I am called sewage or waste water I will tell you how I became like this
Ch.18 Waste Water Story
What difference can you see ? PICTURE 2 PICTURE 1
How you think I became Became like this ?
industrial water Waste riverside
How people make me dirty Home • Kitchen waste • Cleaning the house • Watering plants
How people make me dirty Hospital • Disposal of medicines • Cleaning surgical instruments
How people make me dirty Daily activities • Bathing • Washing utensils • Shaving
How people make me dirty Mining • Cleaning ore • Other activities
How people make me dirty Industries • Releasing chemical waste • Diluting chemicals
The waste from above all areas is called as the sewage. The dissolved impurities are called as pollutants or contaminants
1.Phosphates & nitrates 2.Metals like iron copper zinc 1.Nitrogen 2.Phosperous Nutrients Organic impurities Inorganic impurities Typhoid bacteria Cholera bacteria 1.Urine & excreta 2.Kitchen waste 3.Animal waste Bacteria SEWAGE
Chlorination Filtration Purification Of Sewage Removing of impurities and contaminants Using chlorine to clean water
1. Sewage is mainly generated from which of these? Factories Houses offices Hospitals
2. Which of the process is used to remove dirt and sand from wastewater Sedimentation Filtration Chlorination Aeration
3. Aeration of water during waste water treatment removes which of these? Bacteria Germs Human waste Insoluble things
4. Which of the process during wastewater treatment helps in killing germs Sedimentation Flocculation Chlorination Aeration
5. Which of these disease can happen after drinking contaminated water Pneumonia Small pox Cholera Malaria
6. Jaundice affects which organ Liver Stomach Lungs Heart
7. Which method can be used to make ocean water fit for drinking Filtration Chlorination Boiling Reverse osmosis
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