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从初级和二级污泥中生产挥发性脂肪酸,以支持高效的营养管理

Ruby Diaz¹, Anjan Goswami¹, Herald C Clark¹

¹Civil & Environmental Engineering, University of Utah, Salt Lake City, USA.

|June 14, 2023

概括

使用混合,生物增量和共同发酵的增强污泥水解增加了可溶化学氧需求 (sCOD) 和挥发性脂肪酸 (VFA) 产量. 这项研究优化了污泥处理的生物营养去除过程.

科学领域:

环境科学环境科学
生物技术是生物技术.
废水处理废水处理

背景情况:

增强的污泥水解对于溶解复杂的碳来源至关重要.
增加可溶化学氧需求 (sCOD) 支持微生物在生物营养物质去除 (BNR) 过程中的活性.
优化污泥发酵可以提高营养物质的回收和处理效率.

研究的目的:

研究提高污泥水解和挥发性脂肪酸 (VFA) 生产的方法.
评估混合,生物增量和共发酵对污泥处理的影响.
确定VFA生产的最佳条件,同时尽量减少营养物质的重新引入.

主要方法:

泥发酵与机械混合在350RPM.
使用Bacillus amyloliquefacients用于增强水解的生物增量.
主要污泥 (PS) 和废物活性污泥 (WAS) 在不同比例 (75:25,50:50) 的共同发酵.

主要成果:

与未混合条件相比,混合使sCOD增加了72%,VFA生产增加了60%.
用Bacillus氨基化合物的生物增量增强了PS水解,增加了可溶碳水化合物和蛋白质.
在50:50PS:WAS比率的共同发酵优化了VFA的产生和减少营养的释放.

结论:

混合,生物增量和共同发酵的组合有效地增强了污泥水解和VFA生产.
50:50 PS:WAS联合发酵比率是BNR系统中VFA生成和营养管理的最佳选择.
优化污泥发酵策略可以提高废水处理的效率和可持续性.

关键词:

亚米洛基面菌 (Bacillus amyloliquefaciens) 是一种有毒的植物.生物增强是一种生物增强.共同发酵共同发酵水解是指水解过程中的水解.这是VFA的VFA.

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