通过将热水解与酸盐预处理相结合,改善废物活性污泥的甲生产
Jun Zheng1, Zhimin You1, Yihu Sun2
1College of Environment and Resources, Xiangtan University, Xiangtan, 411105, China.
Journal of environmental management
|November 13, 2024
概括
将热水解 (TH) 与酸盐 (PF) 结合起来,可显著增加82.2%的污泥甲产量. 这种新的方法提高了有机物分解,并减少了耐火化合物,以改善污泥资源回收.
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:
- 热水解 (TH) 是废物活性污泥溶解的关键技术.
- 需要进一步改进,以最大限度地提高有机物转化率,并最大限度地减少耐火物质.
研究的目的:
- 研究一种新的热水解和酸盐 (PF) 的联合预处理方法.
- 评估这种联合预处理对污泥甲生产和生物降解性的影响.
主要方法:
- 污泥样本使用TH和PF的组合进行了预处理.
- 甲产量被测量并与对照样本进行比较.
- 分析了细胞外聚合物质 (EPS),功能组和微生物群体的变化.
主要成果:
- 综合TH-PF预处理将甲产量提高了82.2% (从118到215毫升/克VS).
- PF破坏了EPS结构,降解了酸和梅拉德产品,提高了生物降解性.
- 来自PF的Fe (III) 促进了微生物电子转移,增加了细菌的水解和酸化.
结论:
- 结合TH-PF预处理有效地提高了污泥甲的产生和生物降解性.
- 通过改善污泥结构和微生物活动,PF与TH协同作用.
- 这种方法为先进的污泥资源回收提供了一个有希望的战略.
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