24 Questions
What is the primary function of material recovery operations?
To obtain valuable materials from solid wastes for recycling or reuse
What type of waste transportation system is suitable for small collection operations with few pickup points?
Hoist Truck Systems
What is the purpose of size reduction operations in material recovery?
To reduce the size of waste materials
What is the difference between trash trailers and tilt-frame truck systems?
Trash trailers are similar to tilt-frame systems but are used for heavier loads, such as demolition wastes.
What is the purpose of densification operations in material recovery?
To compact waste materials into smaller volumes
What is the primary function of mechanical separation operations in material recovery?
To separate different waste materials based on their physical properties
What is the purpose of manual separation operations in material recovery?
To separate different waste materials through manual sorting
What is the final step in the solid waste management process?
Disposal or incineration
What is the primary goal of segregating waste at the source, according to the solid waste management hierarchy?
To promote recycling, reuse of resources and reduce the volume of waste for collection and disposal
What type of waste can be composted according to the segregation of municipal wastes?
Compostables such as food waste, yard trimmings, and paper
What percentage of the total cost of solid-waste management does collection and transportation typically account for?
40 to 80%
What is the purpose of pre-processing activities in solid waste management?
To reduce the volume of waste for collection and disposal
What type of waste requires special handling and disposal according to the segregation of municipal wastes?
Special wastes such as hospital wastes, sanitary napkins, batteries, and fluorescent lamps
What is the role of local government units (LGUs) in solid waste management?
Establishing local solid waste management boards for provincial and municipal LGUs
What are the three main stages of solid waste management activities?
Generation, processing, and disposal
What are the possible products of a solid waste management system?
Recycled materials, compost, and energy
What is the primary purpose of the metal baler in the Material Recovery Facility (MRF) operation?
To compact and hold baled material together
What is the purpose of the granulator in the MRF operation?
To process PET and HDPE
What is the main difference between the composting process and aerobic wastewater treatment?
None, they employ similar reactions
What is the ideal particle size for composting?
25-75 mm
What is the purpose of mixing or turning in the composting process?
To prevent drying, caking, and air channeling
What is the primary purpose of the crusher and screen in the MRF operation?
To separate glass and aluminum
What is the byproduct of biodegradation in the composting process?
Compost
What is the purpose of seeding in the composting process?
To reduce composting time
This quiz covers the logistics of waste collection, transportation, and processing. It discusses the roles of generators and the efficiency of waste management systems.
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