This study quantifies and compares the cost of municipal solid waste (MSW) management systems under different scenarios using life cycle cost (LCC) analysis approach. LCC analysis was performed for six integrated MSW management scenarios for Mumbai city, India which generates over 9000 metric tonnes of MSW daily and disposes most of it in open dumps. The scenarios are the combinations of recycling, composting, anaerobic digestion, incineration with electricity generation, and landfill with biogas recovery. To perform LCC analysis of scenarios, present worth method was used. The present worth of operations and maintenance (O&M) cost and revenue generated was estimated using a discount rate of 11.25% for a 20-year life span. Results show that the incineration based scenario is the most cost-intensive option with a net LCC of US$38 per tonne of MSW due to the high capital cost involved in case of incineration. While the scenario with a combination of recycling and sanitary landfill was the most economically viable option with a net LCC of US$19 per tonne of MSW due to comparative lower operating cost. The sensitivity analysis shows that the O&M cost was the most sensitive parameter and a change of ±10% and ±20% in O&M cost, the net LCC of scenarios changes in the range of 14–33% and 29–65%, respectively. This study provides an economic comparison of MSW treatment scenarios from a life cycle perspective, which facilitates the decision-making process for improvement in cost estimation and planning of waste management strategies in India.

本研究使用生命周期成本（LCC）分析方法量化并比较了不同情况下的城市固体废物（MSW）管理系统的成本。针对印度孟买市的六个综合性MSW管理方案进行了LCC分析，该方案每天产生超过9000公吨的MSW，并将其中的大部分作为露天垃圾处理。这些方案是回收，堆肥，厌氧消化，发电焚化和沼气回收填埋的组合。为了进行情景的LCC分析，使用了现值法。使用20年寿命中的11.25％的折现率估算运营和维护（O＆M）成本和收入的现值。结果表明，基于焚烧的方案是成本最密集的方案，由于焚化涉及的高资本成本，其净LCC为每吨城市固体废弃物38美元。虽然将回收和卫生填埋相结合的方案是最经济可行的方案，但由于运营成本相对较低，其净LCC为每吨MSW 19美元。敏感性分析显示，运维成本是最敏感的参数，运维成本变化为±10％和±20％，情景的净LCC分别在14-33％和29-65％的范围内变化。这项研究从生命周期的角度对城市生活垃圾处理方案进行了经济比较，这有助于在印度进行成本估算和废物管理策略规划的决策过程。