School of Business, Woxsen University, Hyderabad, 502345, India.
ICFAI Business School Hyderabad, ICFAI Foundation for Higher Education, Hyderabad, 501203, India.
J Environ Manage. 2022 Aug 1;315:115141. doi: 10.1016/j.jenvman.2022.115141. Epub 2022 May 4.
Proper disposal of Municipal Solid (MSW) waste is an important issue as it causes land, air, and water pollution. Organic MSW provides a habitat environment to insects and often it spreads dangerous diseases. Major reasons identified behind this as the non-separation of MSW at the source and lack of facilities (bins) in the appropriate place for collection of wastes. The present study has proposed an integrated three-stage model to provide a solution to the problem of (i) allocation of the bin for waste collection, (ii) allocation and comparison of centralized and decentralized composting plants, and finally, (iii) vehicle routing for waste collection. The proposed generic model is applied to an Indian city, Bilaspur located in the state of Chhattisgarh. From the results, it is observed that the first stage model provides an optimal number of bins required and allocation of it at minimum cost. Taking it as input for the second stage model, it identifies the best locations for centralized and decentralized composting plants. The result also reveals that decentralized composting plants are more economical than centralized plants. Finally, the third stage of the model identifies the vehicle routing for the waste collection considering both centralized and decentralized plants to minimize the cost. Further, sensitivity analysis is carried out on collection rate and participation percentage parameters to draw additional insights for better management of MSW.
妥善处理城市固体废物（MSW）是一个重要问题，因为它会造成土地、空气和水污染。有机 MSW 为昆虫提供了栖息地环境，并且常常传播危险疾病。造成这种情况的主要原因是 MSW 在源头没有进行分类，以及缺乏合适的收集废物的设施（垃圾桶）。本研究提出了一个综合的三阶段模型，以提供一个解决方案，解决（i）垃圾桶的分配用于废物收集，（ii）集中式和分散式堆肥厂的分配和比较，最后，（iii）废物收集的车辆路线规划。所提出的通用模型应用于印度恰蒂斯加尔邦的比莱市。从结果中可以看出，第一阶段模型提供了所需的最佳垃圾桶数量，并以最低成本进行分配。将其作为第二阶段模型的输入，它确定了集中式和分散式堆肥厂的最佳位置。结果还表明，分散式堆肥厂比集中式工厂更经济。最后，模型的第三阶段考虑到集中式和分散式工厂，确定了废物收集的车辆路线规划，以最小化成本。此外，还对收集率和参与率参数进行了敏感性分析，以获得更好的 MSW 管理的额外见解。
