在消毒过程中地下水和地表水细菌群落的变化:化,臭氧化,光和紫外线辐射
Lucía Castaño-Henao1, David Felipe Garcia Mendez2, Siobhon Egan2
1Environmental Microbiology and Biotechnology Laboratory, Engineering Faculty, Engineering School of Environmental & Natural Resources, Universidad del Valle - Mélendez Campus, Calle 13 # 100 -00, Cali, Colombia.
化和臭氧化等消毒处理对水中的细菌群体的影响不同. 一些细菌,如Bacillus和Pseudomonas,对特定的消毒方法表现出耐药性,这凸显了需要更广泛的社区分析的需要.
科学领域:
- 环境微生物学环境微生物学
- 水处理技术水处理技术.
- 微生物生态学 微生物生态学
背景情况:
- 传统的水质评估侧重于个别致病物种.
- 了解消毒对整个微生物群体的影响至关重要.
- 便污染将各种细菌引入水源.
研究的目的:
- 评估四种消毒方法 (臭氧,UV-C,光-芬顿,) 对地表水和地下水中的细菌群体的影响.
- 为了识别对次致命消毒耐药的细菌群体.
- 为了比较不同消毒策略对微生物种群的有效性.
主要方法:
- 臭氧,UV-C,光芬顿和化对地表水和地下水样本的应用.
- 使用脑心输液 (BHI) 治疗后恢复活性的细胞.
- 使用16S rRNA基因测序识别细菌种群.
主要成果:
- 化有利于地下水中的菌细菌 (例如,细菌),而臭氧化增加了 Pseudomonas 的丰富性.
- 在地表水中的臭氧和低酸盐被选为葡萄球菌和细菌.
- 伪虫在地下水中表现出对UV-C的抵抗力,但通过光-芬顿减少了这种抵抗力.
- BHI成功地恢复了对次致命消毒有抵抗力的细菌.
结论:
- 不同的消毒方法会产生选择性压力,改变细菌群体的组成.
- 某些细菌属对特定的消毒过程表现出耐药性.
- 对微生物群落的全面分析对于有效的水消毒策略至关重要.
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