暴露于硫甲醇将部分脱转移到完全脱:反应堆性能和微生物群体
Huan Liu1, Shugeng Li2, Shaoqing Zhang3
1School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, PR China.
在测序批量反应堆中,暴露于硫甲 (SMX) 的情况将部分脱 (PD) 转移到完成脱. 这导致酸盐积累减少,增加总去除,改变微生物群落.
科学领域:
- 环境科学 环境科学
- 环境微生物学 环境微生物学
- 水处理工程水处理工程
背景情况:
- 部分脱 (PD) 对于废水处理中去除至关重要.
- 像硫甲醇 (SMX) 这样的抗生素是影响生物过程的新兴污染物.
- 了解SMX对PD的影响对于优化治疗效率至关重要.
研究的目的:
- 为了研究不同度的硫甲醇 (SMX) 对部分脱 (PD) 系统的影响.
- 评估SMX对去除效率,微生物群落结构和细胞外聚合物质 (EPS) 的影响.
- 为了确定SMX暴露是否可以将PD转移到完全脱化.
主要方法:
- 使用测序批量反应堆 (SBR) 模拟废水处理.
- 将PD系统暴露在各种SMX度 (0-1 mg/L) 的范围内.
- 分析了去除率,酸盐积累,SMX去除,EPS含量和微生物群体结构 (使用EEM,FTIR和16SrRNA测序).
主要成果:
- SMX显著降低了酸盐积累率 (NAR),并提高了总去除效率.
- SMX的曝光促进了从部分脱到完全脱的转变.
- 随着长时间的运行,SMX去除负载率增加;EPS含量随着SMX度的变化而变化.
- SMX改变了微生物群落结构,减少了Thauera的丰富性,同时增加了Denitratisoma和SM1A02.
结论:
- 暴露于SMX有效地将部分脱转化为完全脱.
- 观察到的去除和微生物群落的变化凸显了SMX对生物废水处理过程的重大影响.
- 需要进一步的研究来了解水生环境中SMX污染的长期影响和潜在的缓解策略.
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