先进无氧消化污泥基生物炭的特点及其在污水污泥调节中的应用
Qian Chen1, Xingmin Fu1, Jiawei Wang1
1Engineering Technology Research Center for Municipal Wastewater Reclamation, Beijing Drainage Group Co. Ltd., Beijing 100124, China.
Bioresource technology
|May 13, 2024
概括
污泥生物炭可以改善污泥脱水. 热解衍生生物炭通过降低含水量和改善花结构来增强污泥调节,提供了一种新的污泥再利用方法.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 污泥排水对于废物管理至关重要.
- 从生物质热解中获得的生物炭为环境应用提供了独特的特性.
研究的目的:
- 调查基于污泥的生物炭作为污泥脱水的调节剂的有效性.
- 通过热解来优化生物炭的生产,以提高污泥的处理.
主要方法:
- 先进的无氧消化污泥被烧解以产生生物炭.
- 生物炭的特点是表面积和毛孔体积.
- 使用不同剂量的生物炭进行了泥调节实验.
主要成果:
- 在800°C生产的生物炭表现出最高的特定表面积 (105.3 m2/g) 和毛孔体积 (0.17 cm3/g).
- 添加生物炭 (20%干固体) 显著减少了污泥毛细血管吸收时间和片大小.
- 生物炭通过吸收EPS和形成骨来增强化聚烯胺调节.
结论:
- 基于污泥的生物炭是改善污泥脱水的有效调节剂.
- 热解温度影响生物炭的特性和性能.
- 这项研究提出了利用生物炭的污泥再利用的可持续方法.
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