提高建筑湿地的总除:铁矿石和生物炭修正案的比较研究
Yucui Bi1, Fuxing Liu1, Zishi Fu1
1Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, PR China; Shanghai Engineering Research Centre of Low-carbon Agriculture (SERCLA), Shanghai, 201415, PR China.
Journal of environmental management
|July 26, 2024
概括
铁矿石修正案显著提高了处理农业下水的建造湿地中的去除. 这种改善与有益细菌和复杂微生物相互作用的增加有关,从而提高了整体治疗效率.
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:
- 在建筑湿地 (CWs) 中去除气对农业下水具有挑战性,原因是碳与的比例较低.
- 生物炭,铁矿石和改性生物炭是改善总 (TN) 清除的潜在修正案,但机制尚不清楚.
研究的目的:
- 为了比较CW中不同修改 (生物炭,铁矿石,Fe-BC) 的有效性,用于处理农业下水.
- 阐明增强去除背后的微生物机制.
主要方法:
- 建造和比较了五个CW:控制 (石英砂),生物炭,Fe-BC,铁矿石和铁矿石+生物炭.
- 分析了树枝球微生物社区组成和共发生网络.
主要成果:
- 所有修正案都改善了TN的去除,铁矿石是最有效的.
- 铁矿石系统显示,关键细菌 (氨氧化,脱,NAFO,Feammox) 的丰富性较高,可同时去除NH4+-N,NO3--N和NO2--N.
- 铁矿石系统中的微生物网络在和铁循环中表现出越来越多的相互性和复杂性.
结论:
- 铁矿石是一种非常有效的补充剂,可以提高CW处理农业排水的去除率.
- 提高效率是由参与和铁循环的特定微生物群落及其合作相互作用推动的.
相关概念视频
00:46Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
01:06Coagulation
278
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
278