氧化还原介质和微空气增强了线性基硫酸盐去除的作用
Maurício Guimarães de Oliveira1, Vicente Elício Porfiro Sales Gonçalves da Silva1, Steven Renato Ferreira Vasconcelos1
1Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil.
Chemosphere
|February 25, 2026
概括
人类二硫酸盐 (AQS) 和微空气显著改善了废水处理中的线性二硫酸盐 (LAS) 的无氧去除. 将AQS与微空气相结合,实现了最高的LAS和COD去除率,提高了稳定性和甲生产.
科学领域:
- 环境科学 环境科学
- 环境工程 环境工程
- 微生物学 微生物学
背景情况:
- 线性基硫酸盐 (LAS) 是废水中广泛使用的表面活性剂.
- 由于其有限且不稳定的生物降解,无氧去除LAS具有挑战性.
- 上游无氧污泥毯 (UASB) 反应器在废水处理中很常见.
研究的目的:
- 评估 antraquinone-2-sulfonate (AQS) 和受控微空气的有效性,以提高UASB反应堆中的LAS生物降解.
- 研究AQS和微空气对LAS去除,COD去除和甲生产的独立和联合影响.
- 在不同的治疗条件下分析微生物群落的变化.
主要方法:
- 两个UASB反应堆运行了90天,用LAS处理合成废水.
- 反应堆R1是严格无氧的,而R2是微空气的.
- 两台反应堆在单独的时间段内进行了没有和添加AQS (50微米) 的测试.
主要成果:
- 没有AQS的严格无氧条件显示LAS去除率低且不稳定 (32%).
- 单独通过AQS的添加,通过增强的电子穿,LAS的去除率提高到了65%.
- 结合AQS和微空气实现了最高的LAS去除 (77%),COD去除 (92.3%) 和甲产量.
结论:
- 通过互补的机制,AQS和微空气作用来增强无氧LAS生物降解.
- AQS和微空气的结合有效地克服了无氧LAS去除的局限性.
- 这些策略提高了废水处理效率和稳定性.
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