防止微塑料污染:需要强有力的政策干预措施来弥补现有废物管理实践中的漏洞
Hiroshan Hettiarachchi1, Jay N Meegoda2
1Independent Researcher, 650 Trailwood Path, Unit D, Bloomfield Hills, MI 48301, USA.
概括
微塑料 (MP) 污染是一个全球性问题. 本研究确定了废物管理系统 (如废水处理) 中的关键漏洞,允许国会议员进入环境,强调通过政策干预进行预防.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
背景情况:
- 微塑料 (MPs),塑料颗粒<5毫米,由于其持久性和生态影响,造成了全球环境的重大威胁.
- MPs来源于初级 (故意产生的) 和二次 (较大的塑料碎片化的) 来源,而二次MPs更为丰富.
- MP污染的普遍性需要修复和预防策略,预防是立即关注的重点.
研究的目的:
- 识别和分析现有废物管理系统中的"逃生路径"或漏洞,这些漏洞有助于微塑料污染.
- 突出现有系统在防止微塑料释放到环境中的不足.
- 倡导政策干预作为消除这些漏洞的主要手段.
主要方法:
- 分析现有的废物管理流程,包括废水处理厂 (WWTP),有机废物堆肥和焚烧灰的回收利用.
- 识别这些系统中的特定点,微塑料不会有效保留或重新引入环境.
- 审查流通中的塑料生命周期,以了解它们对二次微塑料形成的贡献.
主要成果:
- 污水处理厂 (WWTP) 被确定为一个主要的漏洞,未能保留良好的MP,并将其释放到水体中,同时也重新循环捕获的MP.
- 有机废物堆肥和焚烧灰的回收利用为MP释放提供了额外的途径.
- 目前使用的塑料 (主动和空) 的磨损和撕裂不断产生次要的MP,加剧了污染问题.
结论:
- 目前的废物管理系统中存在重大漏洞,这些漏洞有助于微塑料污染.
- 有效预防微塑料污染需要解决这些系统性缺陷,特别是在废水处理和废物处理方面.
- 政策干预对于消除这些漏洞和减轻微塑料对环境的影响至关重要.
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