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微生物群落对黑色和有气味的沉积物中的外源性酸输入的反应

Ao Wang¹, Shengrui Zhang¹, Ziyang Liang¹

¹Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China.

Environmental research

|January 31, 2024

概括

将酸盐 (NO3−-N) 添加到污染的河流沉积物中,通过减少有害物质和增强微生物功能来改善水质. 这有助于恢复河流生态系统.

科学领域:

环境科学环境科学
微生物学微生物学
水质管理水质管理

背景情况:

黑色和有臭味的河流水体带来了重大的环境挑战.
酸 (NO3−-N) 输入是一种拟议的处理方法,但其对沉积物的影响仍在争论中.
将污水排放到污染的河流中的污水排放标准需要重新评估.

研究的目的:

研究外源酸盐 (NO3-N) 对河流沉积物的物理,化学和微生物特征的影响.
了解酸盐添加后沉积物微生物群落的生态变化.
评估酸盐输入对恢复受污染的河流生态系统的潜力.

主要方法:

从受污染的地点收集具有不同特性的河流沉积物.
在NO3−-N添加之前和之后对物理和化学参数的分析.
高通量测序以确定微生物社区结构和功能基因丰度.

主要成果:

降解物质的显著减少,如酸性挥发性硫化物 (AVS) 和铁 (Fe2+).
硫氧化细菌 (例如,Thiobacillus) 和相关的功能基因 (soxA, soxX, soxY, soxZ) 的丰富性增加.
微生物社区功能从硫氧化转向包括循环和有氧分解在内的多种过程.

结论:

适当的外源NO3−-N输入有利于恢复河流沉积物生态系统.
添加酸盐促进氧化,增强微生物的功能多样性.
这些发现支持重新考虑排放到污染河流中的污水废水总度标准.

关键词:

黑色和有气味的沉积物.生态系统生态系统是什么外源的酸盐的.微生物微生物继承继承继承继承

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