用电凝和臭氧处理处理的皮革厂废水质量的评估:物理化学和生态毒理学表征
Edwar Aguilar-Ascón1, Liliana Marrufo-Saldaña2, Julio Barra-Hinojosa2
1Instituto de Investigación Científica, Grupo de Investigación en Tecnologías, Exponenciales, Estudios Generales, Universidad de Lima, Lima, Perú.
PloS one
|July 22, 2025
概括
电凝 (EC) 和臭氧化 (ECO) 有效地从皮革厂废水中去除了污染物. 然而,经过处理的废水仍然显示残留毒性,这表明需要进一步制定环境安全处理策略.
科学领域:
- 环境科学 环境科学
- 水处理技术水处理技术
- 生态毒理学 生态毒理学
背景情况:
- 皮革厂的废水含有高毒性和复杂的污染物,危及水生生态系统.
- 传统的处理方法可以降低污染物度,但不一定会降低毒性.
- 评估制厂废水的先进处理效率对于环境保护至关重要.
研究的目的:
- 评估通过电凝 (EC) 和电凝-臭氧化 (ECO) 处理的制厂废水的质量.
- 分析EC和ECO工艺实现的毒性降低.
- 确定EC和ECO的适用性,以确保接收水体的环境安全.
主要方法:
- 皮肤工厂的废水使用EC连续处理,然后进行臭氧化处理.
- 测量了物理化学参数,包括总悬浮固体 (TSS),化学氧气需求 (COD),和硫化物.
- 使用生物测试评估了毒性,使用Lactuca sativa和Eisenia fetida,并使用FTIR光谱进行化学分析.
主要成果:
- 在EC中,除了96.4%的TSS,30.9%的COD和99%的.
- 臭氧化进一步减少了10%的COD和99%的硫化物.
- 废水毒性从23.89TUs (原料) 降至8.32TUs (EC),但在ECO后略有增加至11.12TUs,与氨和新功能组相关.
结论:
- EC和ECO显著减少了制厂废水中的污染物.
- 经过处理的废水可能会保留残留的毒性,需要进一步处理.
- 补充策略对于实现制厂废水排放的完全环境安全至关重要.
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