由不同的基质驱动的同时酸盐和硫酸盐生物转化:在不同的C/N比率下比较碳来源和代谢途径
Baixiang Wang1, Heping Hu2, Shaobin Huang1
1South China University of Technology China chshuang@scut.edu.cn.
RSC advances
|June 28, 2023
概括
酸有效地从废水中去除酸盐和硫酸盐,通过将硫化等有害副产品降到最低,优于酸. 这项研究优化了同时进行脱硫和脱,使工业废水更清洁.
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.
- 水处理工程水处理工程
背景情况:
- 酸盐 (NO3-) 和硫酸盐 (SO42-) 通常在有机废水中共存,这给环境带来了挑战.
- 同时去除这些污染物对于有效的废水处理至关重要.
研究的目的:
- 为了研究不同碳基质 (酸盐和酸盐) 对酸盐和硫酸盐生物转化途径的影响.
- 在活性污泥工艺中,优化C/N比率,用于集成的同时脱硫和脱 (ISDD).
主要方法:
- 在集成测序批次生物反应器 (ISDD) 中使用活性污泥工艺.
- 将酸盐 (Rb) 和酸盐 (Ra) 作为不同C/N比率的碳来源的性能进行比较.
- 分析了去除效率,化学氧气需求 (COD) 消耗和副产品形成 (S2-, H2S).
- 研究微生物社区结构和预测碳代谢途径.
主要成果:
- 在C/N比率为5.5的情况下,可以实现NO3-和SO42-的最佳去除.
- 与酸 (Ra) 相比,酸 (Rb) 显示出更高的SO42-去除 (93.79%) 和更低的COD消耗 (85.72%) .
- Ra产生了显著更多的S2和H2S,促进了化酸盐降解到 (DNRA) 并冒着二次污染的风险.
- Rb减少了H2S的积累,并支持了更大的基石种群多样性,表明了更稳定的微生物群落.
结论:
- 酸是同时脱硫和脱的优质基质,促进有效的污染物去除和最大限度地减少有害的副产品.
- 了解微生物社区动态和碳代谢途径是优化废水处理过程的关键.
- 这项研究为从各种废水流中同时去除酸盐和硫酸盐的新策略的开发提供了宝贵的见解.
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