在农业土壤应用之前,审查了来自废水处理厂的生物固体中减轻微塑料污染的方法
Sadique Anyame Bawa1, Andrew Chan1, Anna Wrobel-Tobiszewska1
1School of Engineering, University of Tasmania, Australia.
The Science of the total environment
|November 8, 2024
概括
污水处理厂通过生物固体将微塑料 (MP) 释放到土壤中. 本综述考察了减少生物固体中MP污染的物理,物理化学和生物方法,强调了无MP土壤应用的综合策略.
科学领域:
- 环境科学 环境科学
- 环境工程 环境工程
- 材料科学 材料科学 材料科学
背景情况:
- 污水处理厂 (WWTP) 是陆地生态系统中微塑料 (MP) 污染的重要来源,主要是通过将生物固体应用于农业土壤.
- 现有的研究主要针对海洋环境的废水废水中的MP缓解,留下了关于有效的生物固体净化策略的知识差距.
研究的目的:
- 审查和分类减轻生物固体中微塑料污染的方法.
- 分析从生物固体中去除MP的各种干预点和技术的优点和局限性.
- 确定实现无微塑料生物固体的综合战略.
主要方法:
- 将MP缓解方法分为物理,物理化学和生物方法的分类.
- 评估现有和潜在的干预措施在源头,在WWTP污泥生成期间和污染后.
- 讨论诸如泡漂浮,微纤维过,微生物降解,溶化空气漂浮和超声波等方法的有效性,局限性和适用性.
主要成果:
- 物理化学方法 (例如,泡漂浮) 显示出成本效益,但受到污染物和试剂的影响.
- 物理方法 (例如微纤维过) 是安全的,其效率取决于过器的设计和孔径大小.
- 生物方法 (微生物降解) 面临挑战,因为微生物效率变化和降解时间长.
结论:
- 没有任何一种方法足以从生物固体中完全去除微塑料.
- 整合多种缓解策略 (多重合) 对于有效减少微塑料污染至关重要.
- 成功整合方法可以防止微塑料通过生物固体释放到农业土壤中.
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