在部分硫化物自无化 (PSAD) 系统中有效的化物积累:关于S/N比率,pH和温度的见解
Kunming Fu1,2, Jia Kang1,2, Jing Zhao1,2
1Key Laboratory of Urban Storm Water System and Water Environment Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, People's Republic of China.
Environmental technology
|December 20, 2023
概括
优化部分硫化物自化 (PSAD) 过程可以增强Anammox的化物积累. 最佳的S/N比率,性pH值和适度的温度最大限度地提高了酸盐去除效率和酸盐积累率.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 无氧氨氧化 (Anammox) 过程需要持续的化物供应.
- 部分硫化物自脱 (PSAD) 过程被研究为产生酸盐的方法.
- 了解PSAD中酸盐积累动态对于优化去除至关重要.
研究的目的:
- 研究不同S/N比对PSAD过程中酸盐积累的影响.
- 为了确定最佳的pH值和温度条件,以有效地去除酸盐和酸盐积累.
- 分析与提高PSAD性能相关的微生物社区结构.
主要方法:
- 使用测序批量反应器 (SBR) 研究PSAD过程.
- 进行批量测试以评估pH值和温度的影响.
- 进行了16S rRNA测序,以分析微生物社区组成.
主要成果:
- 最佳的酸盐去除效率 (NRE) 和酸盐积累率 (NAR) 在0.7-0.8.8的S/N比率下实现.
- 在性环境中,PSAD工艺表现出卓越的性能,在pH值8.5.5下获得最佳结果.
- 对于NRE和NAR来说,最有利的温度是22±1°C.
- 蛋白质细菌仍然占主导地位,Thiobacillus,Prosthecobacter,Brevundimonas和Ignavibacterium被确定为关键的属.
结论:
- 在PSAD过程中,S/N比率,pH值和温度显著影响酸盐的积累.
- 优化的条件 (S/N比为0.7-0.8,pH为8.5,温度为22±1°C) 提高了去除效率.
- 特定的微生物属,特别是Thiobacillus,在PSAD过程的性能中发挥着至关重要的作用.
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