元素硫和有机碳源的协调刺激了同时的化和脱,使废水具有较低的C/N比率
Chengji Zhang1, Hong Chen1, Gang Xue1
1College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
Bioresource technology
|July 6, 2024
概括
同时化和脱 (SND) 在使用元素硫 (S) 和有机物质的低碳至比废水中得到增强. 这种综合方法显著提高了去除的效率和微生物活动,以有效处理废水.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 水处理工程水处理工程
背景情况:
- 低碳与 (C/N) 比率的废水对传统的除提出了挑战.
- 同时化和脱 (SND) 提供了一个高效的处理策略.
- 元素硫 (S0) 已经显示出诱导SND的潜力.
研究的目的:
- 研究在低C/N比率的废水中使用S0来诱导SND的可行性.
- 为了评估同时添加S0和有机的协同效应.
- 阐明S0-和有机诱导SND的潜在机制.
主要方法:
- 在不同的C/N比率和S0剂量下对SND性能进行实验性研究.
- 微生物代谢,氨同化和细胞外聚合物质的分析.
- 微生物种群的量化和与脱和氨同化相关的基因表达.
主要成果:
- 同时添加S和有机物,与没有两种系统相比,显著增强了去除 (18.2%59.8%).
- 协同效应促进了微生物的新陈代谢和氨同化,为SND提供了更多的电子捐赠者.
- 观察到有氧脱剂和相关基因 (napA,nirS) 的积累.
结论:
- 和有机物的协调是低C/N比率废水中高效和稳定的SND的有效策略.
- 这种方法优化了S0的生物利用,并减少了外部有机要求.
- 为先进的废水整治提供了一个创新的途径.
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