在同时进行硫化物和酸盐生物去除过程中,基质和微生物群落结构的去除能力和变化的特征
Changzi Guo1, Liyuan Shao1, Wanqin Zhao1
1School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
Chemosphere
|February 22, 2024
概括
这项研究优化了同步硫化物和酸盐生物去除 (SSNBR) 过程,以实现碳中和目标. 获得了高的去除效率,硫化物去除在不同的条件下比酸盐去除更强大.
科学领域:
- 环境科学 环境科学
- 环境生物技术 环境生物技术
- 微生物生态学 微生物生态学
背景情况:
- 资源和能源利用技术对于实现碳中和至关重要.
- 同时硫化物和酸盐生物去除 (SSNBR) 过程是废水处理的关键技术.
- 了解基质和微生物社区动态对于优化SSNBR至关重要.
研究的目的:
- 调查SSNBR工艺中硫化物和酸盐的去除效率.
- 分析基质度和摩尔比率 (S/N比率) 对去除性能的影响.
- 检查液压保留时间 (HRT) 对SSNBR过程和微生物群落结构的影响.
主要方法:
- 对SSNBR工艺性能进行实验调查.
- 对硫化物和酸盐去除负载和效率的分析.
- 评估不同S/N比率和HRT的影响.
- 使用16S rRNA测序进行微生物社区结构分析.
主要成果:
- 实现了高的去除负荷:硫化物为2.998公斤m-3∙d-1和酸盐为1.011公斤m-3∙d-1在2.4小时HRT.
- 硫化物去除效率始终超过99%,即使影响度增加.
- 酸盐去除效率对S/N比率和HRT更敏感,随着负载的增加和HRT的缩短而下降.
- 确定了关键的功能性属:埃克西瓜细菌,克洛斯特里,细菌,菌和斯芬戈蒙纳斯.
结论:
- SSNBR工艺在同时去除硫化物和酸盐方面表现出高效率,支持碳中和倡议.
- 在测试条件下,硫化物去除比酸盐去除更稳定.
- 优化HRT和S/N比率对于最大限度地提高酸盐去除效率至关重要.
- 鉴定到的微生物群落在SSNBR系统中对和硫的去除起着至关重要的作用.
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