在生物膜受影响的化坦克中,使用低剂量的铜进行有效的胺管理,而无需"燃烧"
Dipok Chandra Sarker1, K C Bal Krishna2, Maneesha P Ginige3
1Department of Civil and Construction Engineering, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia.
Chemosphere
|March 14, 2024
概括
低度的铜可以抑制化,改善水系统中的胺水平. 这种方法为水利设施提供了成本效益高的"燃烧"替代品,提高了水质和公共卫生.
科学领域:
- 环境科学 环境科学
- 水处理 化学 水处理 化学
- 微生物学 微生物学
背景情况:
- 化水系统中的化导致高酸盐和低胺水平.
- 当前的水利设施实践,如"燃烧"是昂贵的,复杂的,并损害水质.
- 生物膜和沉积物的积累加剧了分布系统中的氨酸衰变.
研究的目的:
- 为了评估低度铜在实验室规模的胺系统中抑制化功效.
- 评估铜剂量对胺水平和衰变速度的影响.
- 了解氨氧化微生物对铜和胺暴露的弹性.
主要方法:
- 一个连续流动的实验室系统与五个反应堆在系列模拟的全尺度条件.
- 低度的铜 (0.1-0.2 mg-Cu L-1) 每天被注入化反应堆.
- 在不同的条件下监测化,胺水平和微生物活动.
主要成果:
- 低度的铜有效抑制了化,改善了胺水平.
- 在散装水,生物膜和沉积物中减少了胺的衰变,特别是在高胺/低酸盐的影响下.
- 氨氧化微生物对长时间暴露在低度的铜和胺中表现出弹性.
结论:
- 铜剂量是防止化和保持生物稳定的残留的可行策略.
- 这种方法为昂贵而复杂的断点化提供了替代方案.
- 这些发现支持制定短期铜剂量策略,以改善水质管理.
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