Step 1: Breakdown of costs in Municipal Solid Waste (MSW) management. In a typical centralized MSW management system, the major functional elements include: Collection and transport Biological treatment (e.g., composting) Thermal treatment (e.g., incineration) Disposal in a sanitary landfill Among these, collection and transport account for the highest cost due to the following reasons: Extensive labor and operational requirements. High fuel consumption for transport vehicles. Large-scale infrastructure required for collection.
Step 2: Compare costs of other components. Biological treatment: Less expensive than collection and transport, as it primarily involves local facilities.
Thermal treatment: Costly but less frequent in Tier I cities due to limited use of incineration plants.
Disposal in a sanitary landfill: Costly but less significant compared to collection and transport costs.