Hazardous Waste Management Problems on “Landfill Disposal Guidelines”.
1. Hazardous waste guidelines provide mainly criteria for location, site selection.
a) True
b) False
Answer: a
Clarification: Hazardous waste guidelines provide mainly criteria for location, site selection, site investigation, planning and design, requirements of landfill liner & cover, construction & operation, inspection.
2. For a selected hazardous landfill site, if water table is within 2.0 m to 6.0 m, which of the following liner is opted?
a) Single
b) Double
c) Triple
d) Multi-liner
Answer: b
Clarification: In a place where rainfall is high, sub-soil is highly permeable and water table is within 2.0 m to 6.0 m double composite liner is adopted.
3. Single composite liner system has a leachate collection layer of thickness ________ cm.
a) 10
b) 20
c) 30
d) 40
Answer: c
Clarification: Single composite liner system has a leachate collection layer of thickness 30 cm or more and coefficient of permeability in excess of 10-2 cm/sec (10-4 m/sec).
4. Single composite liner comprise compacted clay layer of thickness ________ cm.
a) 100
b) 150
c) 200
d) 250
Answer: b
Clarification: Single composite liner comprise compacted clay layer of thickness 150 cm or more having a coefficient of permeability of 10-7cm/sec or less.
5. What is the coefficient of permeability in double composite liner system?
a) 10-2
b) 10-3
c) 10-4
d) 10-5
Answer: a
Clarification: The coefficient of permeability in double composite liner system 10-2 cm/sec and primary leachate collection layer is of thickness 30 cm.
6. Double composite liner comprise compacted clay layer of thickness ________ cm.
a) 100
b) 45
c) 20
d) 25
Answer: b
Clarification: Double composite liner comprise compacted clay layer of thickness 45 cm or less and secondary leachate collection layer of thickness 30 cm or more.
7. A layer of local top solid which provisions self-sustaining vegetation should have thickness of ____ cm.
a) 50
b) 60
c) 70
d) 80
Answer: b
Clarification: A layer of local top solid which provisions self-sustaining vegetation should have thickness not less than 60cm and drainage layer thickness should be 30 cm or more.
8. What should be the distance between the storage sheds in storage unit?
a) 10
b) 15
c) 20
d) 25
Answer: b
Clarification: There should be 15m distance between the storage sheds and storage area should be provided with the flameproof electrical fittings for safe storage of hazardous waste.
9. Waste having flash point less than 65.5 degree C, the drums should be stacked more than one height.
a) True
b) False
Answer: b
Clarification: The stacking of drums in the storage area should be restricted to three high on pallets. But for waste having flash point less than 65.5 degree C, the drums should not be stacked more than one height.
10. What is the normal storage time of incinerable hazardous waste at the incinerator site?
a) 4 months
b) 5 months
c) 6 months
d) 7 months
Answer: c
Clarification: The storage time of incinerable hazardous waste at the incinerator site is restricted to maximum 6 months according to HWMR, 2008.
Hazardous Waste Management Problems, >