在连续流通系统中保留和回收颗粒,以实现脱和化物减少
Anjan Goswami1, Nathan Stein1, Manal Fawzy2
1Department of Civil and Environmental Engineering, University of Utah, Salt Lake City, UT 84102, USA.
Bioresource technology
|July 2, 2023
概括
这项研究引入了一种新的无氧颗粒污泥生物反应器,用于高效的废水处理. 它有效地消除了化学氧气需求,酸盐和酸盐,使用连续流通的泡柱设计.
科学领域:
- 环境微生物学 环境微生物学
- 环境工程 环境工程
- 生物反应器技术技术
背景情况:
- 废水处理需要有效地去除化学氧气需求 (COD),酸盐 (NO3-N) 和酸盐 (ClO4-).
- 无氧颗粒污泥 (AxGS) 生物反应器为同时去除营养物质和污染物提供了一个有希望的方法.
研究的目的:
- 开发和评估一个连续流通的气泡柱 (CFB) 无氧颗粒污泥 (AxGS) 生物反应器,用于废水处理.
- 评估开发的生物反应器中COD,酸盐和酸盐的去除效率.
- 描述负责脱和化物减少的微生物群体.
主要方法:
- 使用完全无氧反应器,具有重力稳定设计,用于颗粒捕获和回收.
- 连续运行CFB-AxGS生物反应器.
- 分析了COD,酸盐和甲酸盐度的废水.
- 采用16s rDNA amplicon测序来识别微生物群落.
主要成果:
- 实现了98%的平均COD去除效率.
- 观察到的平均酸盐和酸盐去除效率分别为99%和74%±19%.
- 鉴定出蛋白质细菌和脱氨酸菌作为参与脱和酸盐降解的优势微生物群.
- 报告的平均颗粒径为6325 ± 2434微米,污泥沉速度高 (SVI30/SVI1 >90%).
结论:
- CFB-AxGS生物反应器在废水中去除COD,酸盐和酸盐方面表现出高效率.
- 优先使用酸盐导致了COD限制条件,影响了酸盐的去除.
- 生物反应器代表了无氧颗粒污泥技术的先进发展,用于先进的废水处理.
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