无氧颗粒活性污泥工艺,用于同时去除危险的酸盐和酸盐
Nathan Stein1, Anjan Goswami1, Ramesh Goel1
1Department of Civil and Environmental Engineering, University of Utah, Salt Lake City, UT 84112, USA.
Journal of hazardous materials
|June 21, 2023
概括
这项研究开发了一种无氧颗粒活性污泥 (AxGS) 系统,用于快速去除酸盐和酸盐. AxGS 证明了有效地减少这些污染物,优于其他方法.
科学领域:
- 环境微生物学 环境微生物学
- 环境工程 环境工程
- 生物技术是生物技术.
背景情况:
- 酸盐和酸盐是水中的危险污染物.
- 这些污染物的传统处理方法可能是低效或昂贵的.
- 颗粒型污泥提供了增强生物修复的潜力.
研究的目的:
- 为无氧颗粒污泥 (AxGS) 开发一种快速培养方法.
- 评估AxGS在同时去除甲酸盐和酸盐方面的效率.
- 将AxGS的性能与其他污泥类型和生物反应器配置进行比较.
主要方法:
- 使用一个气密,无氧气泡列测序批量反应堆 (SBR).
- 应用的盛宴/饥荒条件和剪切力用于加速颗粒化.
- 采用短沉降时间 (2分钟) 作为液压选择压力.
- 在稳定状态条件下运行反应堆超过500天.
主要成果:
- 实现了高效 (>99.9%) 的酸盐和酸盐的减少.
- 培养的AxGS具有高的酸盐,酸盐和溶解有机碳 (DOC) 的特异性降解率.
- 在UASB生物反应堆中,AxGS与花化生物质和AxGS相比,已经证明了AxGS的优异性能.
- 在AxGS中发现了大量的Dechloromonas物种,这表明它们在减少污染物中的作用.
结论:
- 在SBR中无氧颗粒化是一种有效的策略,用于快速培养专门生物质.
- 开发的AxGS系统可以有效地同时去除甲酸盐和酸盐.
- 这项研究有助于更好地理解用于危险化学品整治的颗粒状活性污泥工艺.
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