EN8591 Municipal Solid Waste Management - Unit 2 Two Marks Q&A

1. EN8591 Municipal Solid waste management
Two marks Q&A
Unit 2 Source Reduction, Waste Storage &
Recycling
(Part 1)
By
Mrs.C.Subha
Department of Civil Engineering
Ramco Institute of Technology, Rajapalayam

2. 1. Waste management hierarchy
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3. 2. What is the onsite storage of MSW?
On-site storage means storage of solid waste at or near the source of generation
before primary collection.
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4. 3. When do you prefer on-site storage methods for solid waste?
When the storage area is available
Where the public accepted for on-site storage
Where the source of segregation is adopted on-site.
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5. 4. What are the different on-site processes for solid waste management?
• Collection
• Storage
• Segregation of reusable, resaleable, and recyclable wastes
• Recycling of biodegradable wastes for energy recovery.
• Shredding
• Composting
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6. 5. Enlist the essentials of proper storage of MSW
Proper storage of MSW needs the following:
• Availability of large area for storage of different wastes
• Availability of proper drainage system
• Storage site should be away from surface water bodies
• Availability of recycling facility
• Availability of accommodation & office facility
• Proper disinfection system
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7. 6. State the economic benefits of onsite processing
• Resource recovery
• Energy recovery
• Reduced transportation
• Reduced disposal cost
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8. 7. Name a few equipment's for onsite processing of wastes
• Shredders
• Hydropulpers
• Compactors
• Incinerators
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9. 8. Name a few disease caused by improper storage of waste
• Plague
• Breeding of flies and mosquitoes leading to malaria
• Filariasis
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10. 9. Materials used as storage containers
Plastic containers
Community Bins
Litter Bins
RCC Bins
Corrosion Resistant Bins
Large Masonry Enclosures
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11. 10. What are the characteristics of storage containers?
Light weight & recyclable
Non-corrosive and non-reactive with wastes
Easy to handle
Cost wise economic
Easy to transport
Easily available
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12. 11. What are the types of containers used for storage of solid waste?
(i) Buckets
(ii)Plastic Bins
(iii) Plastic Bags
(iv) Metal Bins with (or) without lids
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13. 12. Name the two categories of containers used to store wastes
Stationary Container: Immovable containers for storage of waste at the site
Hauled Container: Movable containers that are directly taken to the
processing unit for emptying.
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14. 13. What are the options for selection of containers?
• Single-family households use small containers which can be operated
manually.
• Residential units, commercial units, institutions, and industries require larger
containers which requires mechanical handling.
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15. 14. What are the disadvantages of communal containers?
• Lack of maintenance and upgrading
• Residuals and scattered solid wastes emit foul smell
• While handling and transferring the solid waste from the container to the
collection vehicle, the collection crew needs to sweep around all the scattered
wastes.
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16. 15. What is the significance of volume reduction of solid waste management?
• Reduces solid waste at the source and prevents materials from entering the
waste stream
• Saves energy.
• Reduces greenhouse gas emissions that contribute to global climate change.
• Helps sustain the environment for future generations.
• Reduces the amount of waste that will need to be recycled or sent to landfills
and incinerators.
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17. 16. Differentiate recycle and reuse
• Recycle: the process of producing new products from waste materials
Ex. Biogas from kitchen waste
• Reuse: Reuse materials from solid wastes without recycling
Ex. Using paint buckets as dustbins etc.,
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18. 17. What are the objectives of waste-sorting?
• To separately store recyclable materials for reuse
• To ensure recovery of material and energy from the waste
• To separately store the hazardous waste materials
• To minimize the waste and ensure reduction in landfill space for final
disposal.
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19. 18. Give two ‘Reuse Tips’ for reusing solid waste
Use resaleable containers rather than plastic wrap
Use a ceramic coffee mug instead of a paper cup
Reuse cloth bags.
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20. 19. Name the different methods of source reduction
a) Mechanical volume reduction and size reduction
b) Chemical volume reduction
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21. 20. Give two ‘Reduce Tips’ for reducing solid wastes
Buy products in bulk. Hence packaging will be less and the cost per count
will also be less
At office work make two-sided copies wherever possible.
Maintain central files rather than using several files for individuals
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22. 21. List the advantages of source reduction
• Hazardous materials from general wastes are removed
• Clean recyclable materials are generated
• Health risks are minimized
• Working conditions within recycling plants are improved
• Efficiency of energy recovery is improved, helping to operate the waste
treatment system cost-effectively
• Quality of end-products gets improved
• Overall waste management cost is minimized
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23. 22. Methods of implementation of source reduction
• Education and research
• Financial incentives and disincentives
• Regulations
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24. 23. State the economic aspects of recycling MSW
Cost reduction
Employment
Energy recovery
Reduce health care cost
Saving costs for other public utilities
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25. 24. What is meant by material recovery facility? (MRF)
It is a centralized facility that receives, separates, processes, and markets
recyclable material. It is designed to handle all types of recyclables.
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