通过使用酸来抑制铁介导化,提高化废弃物活性污泥的生物可用性
Changwen Xu1, Jing Yang2, Hao Shen2
1Department of Municipal Engineering, School of Civil Engineering, Hefei University of Technology, Hefei 230009, China; College of Civil and Architecture Engineering, Chuzhou University, Chuzhou 239000, China.
Bioresource technology
|February 15, 2026
概括
在废弃活性污泥 (WAS) 的溶解 (AL) 过程中添加酸 (NaAc) 会提高有机物质的生物可用性. 这种NaAc-AL-WAS技术提高了污泥的碳回收和资源利用.
科学领域:
- 环境工程 环境工程
- 生物技术是生物技术.
- 废物管理 废物管理
背景情况:
- 性溶解 (AL) 用于废物活性污泥 (WAS) 的资源利用.
- 耐火性有机物质的形成阻碍了AL的效率.
- 改善生物可用性对于有效的污泥资源回收至关重要.
研究的目的:
- 开发NaAc合AL-WAS技术,以提高生物可用性.
- 研究NaAc对有机物质特性的影响.
- 评估对脱和甲基生成的影响.
主要方法:
- 应用NaAc-AL-WAS技术,使用不同的NaAc度 (0.5%,1%,5%).
- 生物化学氧气需求 (BOD) 和溶性化学氧气需求 (SCOD) 的分析.
- 湿性物质 (HS) 和蛋白质分量的量化.
- 测量脱和甲的速度和潜力.
- 研究铁沉和减少的作用.
主要成果:
- 与AL-WAS相比,NaAc-AL-WAS显著增加了BOD和SCOD比率.
- 5% NaAc-AL-WAS 减少了10.3%的湿性物质和61.0%的高分子量蛋白质.
- 脱和甲的速度和潜力得到了大幅度的提高.
- 通过改变铁的结合,NaAc促进了花和抑制了HS的形成.
结论:
- 与NaAc合的性溶解是改善污泥资源利用的有希望的技术.
- 有机物增加的生物可用性有助于碳回收.
- 该机制涉及NaAc诱导的铁沉和减少,抑制湿物质的形成.
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