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Updated: May 24, 2025

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缓慢生物降解的COD对OAO工艺中脱的重要性

Tzu-Chuan Lin¹, You-Ren Yang¹, Quoc Khanh Nguyen¹

¹Graduate Institute of Environmental Engineering, National Central University, Taoyuan, 32001, Taiwan.

Journal of environmental management

|March 5, 2025

概括

有机颗粒物,特别是缓慢生物降解的化学氧需求 (SBCOD),有效地推动了废水处理中的脱. 在氧-无氧-氧系统中SBCOD的水解证实了它作为增强去除的碳来源的可行性.

科学领域:

环境工程环境工程
水处理技术水处理技术
微生物生态学微生物生态学

背景情况:

有机颗粒物作为脱的碳来源的作用对于有效的废水处理至关重要.
了解颗粒物的生物降解性是优化去除过程的关键.

研究的目的:

为了研究有机颗粒物对氧-无氧-氧 (OAO) 系统中脱的贡献.
为了分类化学氧气需求 (COD) 分数,并分析呼吸谱,以评估碳源潜力.

主要方法:

试点规模的OAO系统的运行,不定位的原始废水流入四个装载阶段.
总COD (TCOD) 的分类为容易生物降解的COD (RBCOD) 和缓慢生物降解的COD (SBCOD).
测量氧利用率 (OUR) 以分析呼吸和水解现象.

主要成果:

该OAO工艺实现了高的去除效率:TCOD (87.7%),BOD (90.1%),TN (61.5%) 和NH4+-N (99.5%).
在TCOD中,RBCOD占12.6%,SBCOD占45.6%,这表明了重要的潜在碳来源.
后特异性脱率 (0.32-0.70毫克NO3--N/gMLVSS.hr) 超过了内源性速率,我们的测试证实了SBCOD水解.

结论:

缓慢生物降解COD (SBCOD) 是OAO系统中脱的可行和重要的碳来源.
SBCOD的水解支持其用于去除,提高整体废水处理效率.
该OAO工艺有效地去除污染物,利用有机颗粒物进行脱.

关键词:

生物降解性生物降解性在COD分类中,COD的分类是:脱化过程中的脱.水解是指水解过程中的水解.氧气利用率的使用率.

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