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通过铁介导协调吸附的水凝辅助SNAD工艺通过半化废水的排毒机制:性能,微生物群相互作用和分子对接
Wenshuo Yang1, Yukun Du1, Deyuan Jin1
1School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Water research
|February 14, 2026
概括
一种新型的水凝载体通过增强anammox工艺和去除有毒的酸来有效处理半化废水 (SCWW). 这一战略显著改善了废水质量和微生物社区的功能.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 半废水 (SCWW) 由于有毒化合物而造成重大环境风险.
- 传统的治疗方法与SCWW的复杂和有毒性质作斗争.
- 开发高效和强大的SCWW处理策略对于生态保护至关重要.
研究的目的:
- 评估一种新的聚乙醇/植物酸/铁 (PVA/PA/Fe) 水凝载体,用于增强基于无氧氨氧化 (anammox) 的同时部分化,化和脱化 (SNAD) 过程,用于处理SCWW.
- 确定SCWW中主要的毒性物质,并阐明其在生物处理过程中的抑制机制.
- 评估PVA/PA/Fe载体对已识别的有毒物质的吸附能力和机制.
主要方法:
- 基于anammox的SNAD工艺的实施和长期运行,使用PVA/PA/Fe水凝载体进行SCWW处理.
- 急性毒性测定和去除抑制试验,以确定SCWW中的有毒化合物.
- 分子对接和密度功能理论 (DFT) 计算,以调查毒素和关键酶之间的相互作用.
- 吸附实验用于量化载体对有毒物质的吸附能力.
主要成果:
- 增强的PVA/PA/Fe SNAD系统实现了高清除效率:氨 (NH4+-N) 的90.8%,化学氧需求 (COD) 的91.4%.
- 酸被确定为一种主要的毒性物质,抑制了诸如氧胺氧化还原酶 (Hao) 和氧化还原酶 (Nor) 等关键酶.
- 通过Fe介导的协调,PVA/PA/Fe载体对酸具有很高的吸附能力 (10.59 mg g-1),比未修改的载体大6倍.
结论:
- 该PVA/PA/Fe水凝载体显著提高了用于SCWW处理的基于anammox的SNAD过程的性能.
- 载体通过强大的吸附有效地减轻了酸的毒性,从而提高了整体处理效率.
- 这种载体增强策略为SCWW等具有挑战性的工业废水的生物处理提供了有希望和可行的解决方案.
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