营养缺乏对生物污水处理的影响 - 关于尿源分离的前景
Chee Xiang Chen1, Veera Koskue1, Haoran Duan2
1Department of Chemical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia.
The Science of the total environment
|June 26, 2024
概括
污水处理中的尿源分离可能导致营养缺乏,影响有机碳和营养物质的去除. 这种缺陷也影响了污泥的特性和温室气体排放,需要对废水处理厂进行仔细的操作调整.
科学领域:
- 环境科学 环境科学
- 水处理工程水处理工程
- 资源回收 资源回收 资源回收
背景情况:
- 人类尿液含有丰富的 (N) 和 (P),是资源回收和循环经济原则的关键营养物质,用于废水处理.
- 尿液对污水中的N和P负载有显著的贡献,使得源隔离成为营养管理的潜在策略.
- 然而,分离尿液可能会导致营养缺乏的污水,这对传统的污水处理厂 (STP) 构成挑战.
研究的目的:
- 审查和缺乏对活性污泥工艺的潜在影响.
- 分析这些缺陷如何影响有机碳和营养物质的去除,污泥特性和温室气体排放.
- 为了确定STP的运营挑战在未来与广泛的尿源隔离.
主要方法:
- 对缺乏营养的污水和活性污泥工艺研究的文献综述.
- 对有机碳去除,营养物质去除 (N和P),污泥特性和温室气体排放的影响分析.
- 对污水处理厂的运营后果的检查.
主要成果:
- 化-脱化和生物P去除的要求随着尿分离的增加而减少.
- 完全分泌尿液可以严重影响有机碳,N和生物P的去除效率.
- 由于尿液分离而减少固体保留时间,可以增加多达48%的治疗能力.
- 污泥花和沉积能力可能会恶化,导致积聚问题.
- 缺可以有益地减少氧化排放.
结论:
- 尿源分离显著改变了污水的组成,导致营养缺乏.
- STP必须为操作挑战做好准备,包括对处理效率和污泥质量的影响.
- 虽然有利于减少排放,但营养缺乏需要适应性管理策略,以有效处理废水.
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