start recycling

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start recycling

  1. 1. Waste Management<br />Deepanshu Tuli<br />VII<br />(c) deepanshu tuli (r) Gurukul Global School<br />
  2. 2. Introduction<br />Have you ever seen overflowing bins and open dumps in your neighbourhood ?<br />I know your answer would be yes as waste management has not been taken care of<br />© deepanshu tuli ® Gurukul Global School<br />
  3. 3. Types of waste<br />Solid Waste- Food waste, bottle & paper<br />Liquid Waste- Sewage and industrial effluent<br />Gaseous Waste- Vehicle emission and gasses from chimneys<br />In this Presentation we will talk more about liquid waste.<br />© deepanshu tuli ® Gurukul Global School<br />
  4. 4. Sources of waste water <br />Domestic Activities: The waste water generated from our houses e.g. water used for bathing<br />Agricultural: Wastewater generated from farms containing harmful pesticides and chemicals<br />Industries: The waste water generated from various industries (paint and dye) containing harmful chemicals like chromium and lead.<br />© deepanshu tuli ® Gurukul Global School<br />
  5. 5. Eutrophication<br />It is an excessive growth or “blooms” of algae in lakes rich in nutrition such as phosphates, is called eutrophication . Normally it takes thousands of years to progress but human activities have enhanced this process greatly <br />© deepanshu tuli ® Gurukul Global School<br />
  6. 6. Municipal Water<br />Have you ever wondered where does all the waste water goes from our toilets and sinks ???<br />Each time we flush up our toilets or wash something, water containing faeces paper , cloth , soap , food scraps etc. goes down the drain . This water gets accumilated and forms sewage . In large cities it is known as Municipal Water<br />© deepanshu tuli ® Gurukul Global School<br />
  7. 7. Fact File <br />Do you know why manhole covers are round???<br />This is to avoid accidents. Since man holes covers are round they do not fall down when somebody stands on them. If they were square or rectangular , they could have fallen down.<br />What is BOD ???<br />BOD stands for Biochemical Oxygen Demand. BOD is the amount of oxygen required by a microrganisms to decompose. <br />© deepanshu tuli ® Gurukul Global School<br />
  8. 8. The schematic diagram of waste water treatment<br />© deepanshu tuli ® Gurukul Global School<br />Primary treatment<br />Secondary treatment<br />Tertiary treatment<br />Sewage<br />Treated water<br />Mechanical Process<br />Chemical Process<br />Biological process<br />
  9. 9. Recycling is one of the most efficient methods that can be adopted to manage our wastes <br />© deepanshu tuli ® Gurukul Global School<br />
  10. 10. © deepanshu tuli ® Gurukul Global School<br />Thank You<br />

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