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关于从垃圾填埋场的液中去除per-和多基物质 (PFAS) 的比较研究

Andriy Malovanyy¹, Fredrik Hedman¹, Lisa Bergh²

¹IVL Swedish Environmental Research Institute, Box 21060, 11428 Stockholm, Sweden.

Journal of hazardous materials

|September 13, 2023

概括

处理垃圾填埋场的液中含有和多基物质 (PFAS) 需要仔细选择方法. 纳米过有效地去除短链PFAS,而泡分成和离子交换树脂为特定污染物提供了具有成本效益的解决方案.

科学领域:

环境科学环境科学
水处理技术水处理技术
化学工程是化学工程的重要组成部分.

背景情况:

垃圾填埋场液是对和多基物质 (PFAS) 污染的重要来源.
有效的处理策略对于减轻水体中PFAS污染至关重要.

研究的目的:

为了比较各种处理方法的有效性和成本效益,将PFAS从垃圾填埋场清除液.
为了评估粉状活性炭 (PAC),颗粒活性炭 (GAC),离子交换树脂 (AIX),纳米过 (NF),臭氧化和泡分离的性能.

主要方法:

对同一个垃圾填埋场液样本应用六种不同处理技术的比较分析.
评估PFAS清除效率,重点关注不同的链条长度 (例如3-4 CF2,6-9 CF2).
评估与每个方法相关的处理成本,包括突破时间和特定污染物减少.

主要成果:

所有测试方法都实现了长链PFAS (6-9 CF2) 的75%以上的去除,但使用了大量的资源.
纳米过是去除短链PFAS (3-4 CF2) 的唯一有效方法.
泡分离和AIX是最经济的,在<1€/m3的PFOS和PFOA降低≥90%,达到≥90%的降低.

结论:

治疗方法的选择取决于目标PFAS链的长度和所需的去除效率.
当专注于特定的有毒 PFAS 化合物 (例如, ΣPFOAeq) 而不是广泛的 PFAS 减少时,成本效益会显著增加.
纳米过对全面的PFAS去除有希望,而AIX和泡分离提供了有针对性的,具有成本效益的解决方案.

关键词:

活性炭是一种活性炭.泡分成部分的方法离子交换树脂是一种离子交换树脂.纳米过的纳米过方法臭氧化是一种臭氧化.

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