MSW Components and Treatment/Separation Techniques Matching

This question requires matching components of Municipal Solid Waste (MSW) with the most suitable treatment or separation technique.

Matching Process:

• P - Ferrous metals: Ferrous metals are strongly attracted to magnets. Therefore, the most effective separation technique is a magnetic separator (iv).
• Q - Aluminum and copper: These are non-ferrous metals. An eddy current separator (iii) is specifically designed to separate non-ferrous conductive materials like aluminum and copper from non-conductive materials.
• R - Food waste: Food waste is organic material. It is biodegradable and can be processed through biological methods. Rapid composting (ii) is a suitable treatment method for food waste.
• S - Cardboard: Cardboard is combustible and can be treated via thermal processes. Incineration (i) is a thermal treatment method that reduces waste volume and can recover energy, making it a possible treatment for materials like cardboard within a mixed waste stream.

Correct Matches Summary:

• P corresponds to iv (Magnetic separator)
• Q corresponds to iii (Eddy current separator)
• R corresponds to ii (Rapid composting)
• S corresponds to i (Incineration)

Combining these matches gives the correct option: P-iv, Q-iii, R-ii, S-i.