哈萨克斯坦为实现循环经济而改革建筑垃圾管理:升级建筑和拆除废物回收中心的成本效益分析

IF 4.6 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Recycling Pub Date : 2023-12-29 DOI:10.3390/recycling9010002
F. Karaca, Aidana Tleuken
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引用次数: 0

摘要

本文研究了哈萨克斯坦建筑行业加强建筑和拆除废物(CDW)回收设施以符合循环经济(CE)模式的优势。由于城市化的发展,该行业正经历着巨大的增长,但却面临着管理拆建垃圾的困难,经常导致垃圾填埋处理。为此,本文提供了一项成本效益分析,分析如何根据循环经济的需求升级废旧商品混凝土回收中心。哈萨克斯坦的《环境法典》中规定,自2020年12月起,禁止在垃圾填埋场填埋国内废弃煤炭和废料。其主要目标是最大限度地回收材料,并消除阻碍再生砂石骨料产品利用的污染物。分析得出了令人信服的结果,表明该项目有可能在八年内回收多达 8 400 万吨的煤炭废弃物,年产能增加 25%,回收效率最高可达 95%。尽管预计成本为 4800 万美元,但项目的投资回收期为 9.9 年,表明最终可以收回成本。这些研究结果凸显了该项目在产生经济效益和促进环境可持续发展的同时,还能缓解煤炭废弃物问题的能力。总之,在哈萨克斯坦实施现代化的 CDW 回收中心是建筑行业向 CE 模式转型的有效解决方案。这种转型既能解决紧迫的环境挑战,又能带来广阔的经济前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reforming Construction Waste Management for Circular Economy in Kazakhstan: A Cost–Benefit Analysis of Upgrading Construction and Demolition Waste Recycling Centres
This paper investigates the advantages of enhancing construction and demolition waste (CDW) recycling facilities to conform to circular economy (CE) models in Kazakhstan’s construction sector. The industry is experiencing significant growth due to urbanization, but it faces difficulties managing CDW, frequently resulting in landfill disposal. In response, this paper provides a cost–benefit analysis of upgrading the CDW recycling centres aligned with CE needs. Reflecting legislative changes in Kazakhstan’s Environmental Code, which prohibited CDW in landfills starting December 2020, the initiative to establish modern CDW recycling centres is gaining momentum in major cities. The primary objective is to maximize material recovery and eliminate contaminants that curtail the utilization of recycled sand and aggregate products. The analysis yields compelling results, indicating that the project has the potential to recycle up to 84 million tons of CDW over eight years, with an annual 25% capacity increase and a maximum possible 95% recycling efficiency. Despite an estimated cost of USD 48 million, the project demonstrates a payback period of 9.9 years, signalling eventual cost recovery. These findings underscore the project’s capacity to mitigate CDW issues while generating economic benefits and contributing to a sustainable environment. In conclusion, implementing modern CDW recycling centres in Kazakhstan represents a potent solution for the construction industry as it transitions toward a CE model. This transition addresses both pressing environmental challenges and promising economic prospects.
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来源期刊
Recycling
Recycling Environmental Science-Management, Monitoring, Policy and Law
CiteScore
6.80
自引率
7.00%
发文量
84
审稿时长
11 weeks
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