Waste Management of solid waste materials.pptx

Solid Waste Management

1. What are we talking about today ??

2. The Magnanimous Problem the world faces today Waste Generation

3. Lets Think !!! How to resolve this issue as Engineers

4. Activities and actions required to manage waste from its inception to final disposal which includes collection, transport, treatment & disposal of waste. Picture Waste Management

5. Can you think about the Types of waste Biomedical Waste e Waste Solid Waste

6. Solid Waste -Sources

7. Solid Waste -Sources

8. 1.Landfill a) Modern landfill: Bottom of the landfill is covered with an impervious liner which is usually made of several layers of thick plastic and sand. This liner protects the ground water from being contaminated because of leaching Disposal

9. Disposal b)Scientific landfill

10. New machine to reduce smell at Mangalore compost yard Workers spraying bioenzyme on garbage to speed up decomposing at Pachchanady compost plant yard.

11. 2.Incineration : This method involves burning of solid wastes at high temperatures until the waste turns to ashes. Disposal

12. 3. Recovery or Recycling: This process takes useful yet discarded items for the next use. The process aims at reducing energy loss, consumption of new material; and reduction of landfills. Disposal

13. 4.Energy recovery: There are two ways of recovering energy from wastes. Waste to energy by combustion of waste. Waste to energy from landfill gas. Disposal

14. 5.Compositing: Only biodegradable waste materials are used in composting. There are two most commonly used composting techniques 1. Home-compositing 2. Commercial level Vermi -compositing Disposal

15. 6. Pyrolysis: This is method of solid waste management whereby solid wastes are chemically decomposed by heat without presence of oxygen. This usually occurs under pressure and at temperatures of up to 430°C. The solid wastes are changed into gases, solid residue and small quantities of liquid. Disposal

16. 3. Recycle: It can be divided in three major steps Dis-assembly: Selective dis-assembly, targeting by singling out hazardous components for special treatment Upgrading: Using mechanical processing to upgrade desirable materials content, that is preparing, materials for refining process. Refining: In this step the recovered metals are melted or dissolved and finally separated by using metallurgical and chemical techniques, including pyro-metallurgical and hydro-metallurgical processing. Disposal

17. Thank You