通过使用批量反应器的无氧生物过程从废水中去除阿特拉和2,4-D农药
Marcos Henrique Gomes Ribeiro1, Mariana Leitune Machado1, Maria Cristina de Almeida Silva1
1Federal University of Rio Grande do Sul (UFRGS), Hydraulic Research Institute, Porto Alegre, RS, Brazil.
概括
无氧消化 (AD) 有效地从废水中去除诸如阿特拉 (ATZ) 和2,4-D等农药. 存在的ATZ增强了2,4-D去除,证明了可持续的生物能源和污染物管理解决方案.
科学领域:
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
- 废水处理 废水处理
背景情况:
- 无氧消化 (AD) 是一种可持续的方法,可以从废水中去除持久有机污染物.
- 同时生产生物能源是AD的一个关键优势.
- 像阿特拉津 (ATZ) 和2,4-D这样的农药在水性基质中构成环境挑战.
研究的目的:
- 评估AD在废水中去除ATZ和2,4-D方面的有效性.
- 评估这些农药对无氧消化过程和甲生产的影响.
- 研究辅助污染物对农药降解的协同效应.
主要方法:
- 使用的无氧批量反应器在介质性温度 (35°C) 上运行.
- 监控农药清除,甲生产和关键操作参数 (pH,性,VFA).
- 在单一和混合污染物条件下分析农药去除动力学.
主要成果:
- 亚迪证明了高化学氧气需求 (COD) 清除 (>80%) 与稳定的过程参数.
- 杀虫剂的存在刺激了甲的产生,但没有抑制厌氧过程.
- 亚特拉辛 (ATZ) 的去除率仅为43.6%,但其存在通过共同代谢增强了2,4-D的去除率,达到90%以上.
结论:
- 无氧消化是一种稳定高效的技术,用于处理被ATZ和2,4-D污染的废水.
- 在ATZ增强了2,4-D的降解时,观察到一个协同效应,减少了适应的需要.
- AD提出了一种可持续的方法,可以同时进行废水整治和生物能源发电.
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