在不同的铁离子条件下,快捷化和脱系统的性能,动力特性和细菌群体
Ben-Ze Chang1, Shuai Zhang1, Dong-Zhi Chen1,2
1Department of Environmental Science and Engineering, Zhejiang Ocean University, No.1 Haida South Road, Zhoushan, 316022, People's Republic of China.
Biodegradation
|April 15, 2024
概括
捷径化和脱化 (SND) 系统有效地去除氨. 铁离子 (Fe(II)) 添加高达7.3毫克的L-1可以提高性能,但更高的水平会损害的去除和改变细菌群落.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 废水处理工程 废水处理工程
背景情况:
- 捷径化和脱化 (SND) 是一个有前途的废水处理工艺.
- 了解铁离子 (Fe ((II)) 对SND性能和微生物生态的影响对于优化至关重要.
研究的目的:
- 在不同的Fe (II) 条件下研究SND系统的运行性能,动力学和细菌群体动态.
- 为了确定最佳的Fe (II) 度,以有效地去除和有机物质.
主要方法:
- 使用预培养污泥建立和运行SND系统.
- 影响Fe (II) 度的系统变化 (2.3至12.3毫克L-1).
- 监测和化学氧气需求 (CODCr) 清除效率,污泥特性和细菌群体组成 (使用相对丰度 - RA).
主要成果:
- 高平均NH4+-N去除效率 (ARE) 最初为97.3%,长期保持在94.9%±1.3%.
- 铁度从2.3到7.3毫克L-1改善了沉积,污泥度和有机物质的去除.
- 12.3毫克L-1Fe降低了和CODCr的去除,减少了蛋白质细菌和细菌群的丰富性,并增加了脱的Trichococcus属的相对丰富性.
结论:
- SND系统表现出高去除效率.
- 适度的Fe (II) 添加 (≤7.3毫克L-1) 对SND性能和污泥特性产生积极影响.
- 过多的Fe (II) (12.3毫克L-1) 会对营养物质的去除产生负面影响,并改变微生物群落结构,有利于特定的脱化基.
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