12 Questions
What is the main purpose of size reduction in MSW?
To process materials for direct use like mulch or compost
Which type of equipment is effective for breaking brittle materials?
Hammermill
How do shear shredders operate?
By a scissor-like action with counter-rotating knives
Which type of shaft is considered more reliable in hammermills?
Horizontal shaft
What is the main advantage of Tub Grinder in size reduction?
Diesel-powered for ease of moving
How does the size distribution change after hammermilling raw MSW materials?
Distribution changes significantly
What is the main purpose of Materials Recovery Facilities (MRFs)?
To separate commingled waste into usable materials
What happens to the organic portions of waste in a Materials Recovery Facility?
They are transformed into refuse-derived fuel (RDF)
Which unit operation is used in MRFs to separate plastic from paper?
Electric/magnetic separation
Why is it important to modify the physical characteristics of waste in MRFs?
To make components easier to remove
What is the purpose of densification in Materials Recovery Facilities?
To reduce the volume of materials for easier handling
Which component of MSW can be transformed into refuse-derived fuel (RDF) for energy recovery?
Organics
Test your knowledge on Materials Recovery Facilities (MRFs) and the unit operations used to separate commingled waste. Learn about recycling, composting, refuse-derived fuel, and more.
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