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Municipal Solid Waste Recycling: Impacts on Energy Savings and Air Pollution
Journal of the Air & Waste Management Association ( IF 2.7 ) Pub Date : 2021-01-28
Mahdi Farzadkia, Amir Hossein Mahvi, Abbas Norouzian Baghani, Armin Sorooshian, Mahdieh Delikhoon, Razieh Sheikhi, Qadir Ashournejad

Abstract

In recent years, recycling of municipal solid waste (MSW) has been recognized as one of the most efficient methods of waste management in terms of environmental benefits. This study investigates the energy savings and other environmental benefits of recycling of dry MSW collected in Shiraz, Iran (2018). The impact of different recycling rates (current = 15%, desirable = 50%, ideal = 80%) on environmental benefits and energy savings were assessed. The annual quantity of recycled components were defined as glass (735 tons), plastic carrier bags (555 tons), cardboard (3,874 tons), paper (3,806 tons), disposable plastic containers (287 tons), other types of metals (785 tons), disposable metallic containers (aluminum) (171 tons), other types of plastics (812 tons) and polyethylene terephthalate (PET) (887 tons). The results confirmed that recycling of paper and glass in three different scenarios resulted in a reduction of 1.01, 2.14, and 3.43 million tons of air pollutant emissions, respectively. By improving the recycling rates from 15 to 80%, overall energy savings can improve by between a factor of 3.5 to 5.5. Also, a reduction of approximately 2-3.5% in air pollutant emissions can be achieved by upgrading the current recycling program (15% recycling rate) to favorable and ideal conditions.



中文翻译:

市政固体废物回收:对节能和空气污染的影响

摘要

近年来,就环境效益而言,回收城市固体废物(MSW)已被视为最有效的废物管理方法之一。这项研究调查了在伊朗设拉子(2018)收集的干式生活垃圾回收所带来的节能和其他环境效益。评估了不同回收率(电流= 15%,理想= 50%,理想= 80%)对环境效益和节能的影响。每年回收的组件数量定义为玻璃(735吨),塑料袋(555吨),纸板(3,874吨),纸(3,806吨),一次性塑料容器(287吨),其他类型的金属(785吨) ),一次性金属容器(铝)(171吨),其他类型的塑料(812吨)和聚对苯二甲酸乙二醇酯(PET)(887吨)。结果证实,在三种不同的情况下回收纸张和玻璃,分别减少了1.01、2.14和343万吨的空气污染物排放。通过将回收率从15%提高到80%,总节能量可以提高3.5到5.5之间。此外,通过将当前的回收计划(15%的回收率)升级到有利和理想的条件,可以减少约2-3.5%的空气污染物排放。

更新日期:2021-01-28
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