人类介导的无氧颗粒污泥的形成/表征和增强的甲原性能的表现
Ningli Zhou1, Zhixing Xiao1, Dan Chen1
1College of Urban Construction, Nanjing Tech University, Nanjing 211816, PR China.
Bioresource technology
|March 18, 2024
概括
固态素加速了UASB反应堆中无氧颗粒污泥的形成,大大提高了甲产量和废水中的能量回收. 这种新的方法增强了污泥的特性和微生物活动,以提高生物气的生产效率.
科学领域:
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
- 无氧消化消化无氧消化
背景情况:
- 甲基无氧颗粒污泥 (AnGS) 在上游无氧污泥毯 (UASB) 反应堆中对有效的废水处理至关重要.
- 加快AnGS颗粒化是改善反应堆性能和生物气生产的关键.
- 固相人体 (HM) 已经显示出影响微生物过程的潜力.
研究的目的:
- 调查固相人体素 (HM) 在加快甲原性无氧颗粒污泥 (AnGS) 颗粒化中的有效性.
- 评估HM介导AnGS (HM-AnGS) 对污泥特性,甲产量和微生物活性的影响.
- 评估HM-AnGS在处理实际屠宰场废水中的性能.
主要方法:
- 使用上游无氧污泥毯 (UASB) 反应器与固相人体 (HM) 促进AnGS颗粒化.
- 将HM-AnGS的颗粒化率,颗粒大小,沉速度和机械强度与对照组进行比较.
- 测量了甲产量,甲基辅酶M减少酶 (Mcr) 活性和腺三酸盐 (ATP) 水平.
- 进行了分子分析,以了解HM对物种间电子转移 (IET) 影响的机制.
- 测试了HM-AnGS用于从屠宰场废水中回收能量.
主要成果:
- 通过HM介导的AnGS (HM-AnGS) 在50天内迅速形成,呈现出增强的粒子大小,沉速度和机械强度.
- HM-AnGS的最大甲产量是对照组的5倍.
- 与对照组相比,HM-AnGS显示甲基辅酶M减少酶 (Mcr) 活性 (3.2 - 3.4 倍) 和腺三酸盐 (ATP) 水平 (2.4 - 2.9 倍) 显著提高.
- 分子分析表明,HM加速了特定微生物群体之间的物种间电子转移 (IET) (例如,从Enterococcus到Methanosaeta).
- HM-AnGS在从屠宰场废水中回收能量方面表现出有效性.
结论:
- 固态人体是加速UASB反应堆中无氧颗粒污泥颗粒化的新型和有效剂.
- 通过HM介导的颗粒化显著提高了污泥特性和微生物活性,导致甲产量大幅增加.
- 由HM促进的加速IET是HM-AnGS性能改善的关键机制.
- HM-AnGS显示出从具有挑战性的工业废水,如屠宰场废水中有效回收能源的巨大希望.
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