热氧化物介导的外聚合物释放对分散器预处理对高效无氧消化器消化的影响
Sivaraman Chandrasekaran1, J Rajesh Banu2, Gopalakrishnan Kumar3
1Center of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
Environmental research
|July 16, 2023
概括
这项研究通过首先去除细胞外聚合物物质 (EPS),然后将其分解来增强造纸厂污泥水解. 这一两阶段的过程显著提高了生物甲的生产,降低了污泥管理成本.
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:
- 造纸厂污泥对处置来说是一个很大的挑战.
- 改善污泥水解是资源回收和减少废物的关键.
- 细胞外聚合物物质 (EPS) 阻碍了污泥分解效率.
研究的目的:
- 为了提高纸厂污泥的水解潜力.
- 为了优化一个两相解体过程,包括脱和分散器解体.
- 评估脱对污泥分解效率和生物甲生产的影响.
主要方法:
- 一个两个阶段的过程:脱,然后是分散器分解.
- 脱涉及过氧化处理0.05g/g悬浮固体和70°C的治疗.
- 评估参数包括碳水化合物,蛋白质,DNA,可溶化学氧需求 (SCOD) 和悬浮固体 (SS) 减少.
主要成果:
- 优化脱可实现显著的EPS去除.
- 脱和分解的污泥显示固体减少了19.2%,而仅分解的污泥减少了13.5%.
- 生物甲的产量增加到0.214L/g的COD在两个阶段的过程.
- 污泥管理成本从每170美元降至51美元.
结论:
- 处理前的脱对于有效的污泥分解至关重要.
- 拟议的两相分解方法显著改善了生物甲产量.
- 这种方法为造纸厂污泥管理提供了具有成本效益的解决方案.
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