Processing and Transformation

What happens in materials recovery facilities (MRFs)?

• Recovery of recyclable materials

• Usage of unused facilities

• Separation and processing of source-separated or commingled waste

• Recovery of biodegradable waste

Design of a MRF is dependent on:

• Number and types of waste

• Waste diversion goals

• Financial constraints

• Product specifications

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

What type of unit machine focuses on size reduction for material used in direct use (i.e. composting or in MRF)?

• Shredding

• Screening

• Separator

• Densification

Tags

NGSS.MS-ETS1-1

Which type of screening includes an adjustable set of parallel horizontal shafts equipped with star-shaped discs?

• Disc screen

• Vibrating screen

• Trommel screen

Which screening would be more preferable for dry waste?

• Disc screen

• Vibrating screen

• Trommel screen

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

How do density separators usually separate the materials?

• By a weighing machine

• By the use of air

• By the use of liquids

• By AI

Magnetic separators separate all metals from non-metals.

• True

• False

Answer explanation

It only separates ferric materials.

If recycling/resource recovery is near 100%, people would still need landfills.

• True

• False

Resource recovery happens at which part?

• Source

• End

• Middle

For centralized facility processing, source separation is still required.

• True

• False

Answer explanation

CFP is utilized BECAUSE source separation is difficult (i.e. due to space issues)