使用一种新的协同作用的铁/氧硫酸盐-多烯胺方法,加强了污泥脱水
Yansha Zeng1, Zhe Wang1, Qiyin Tan1
1College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University, Jinhua, 321004, China.
Journal of environmental management
|July 3, 2024
概括
使用铁/氧硫酸盐和聚烯胺的新调节方法显著改善了污泥脱水. 这个过程分解细胞外的聚合物物质,释放结合的水,并增强污泥颗粒聚合,以更好地去除水.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 材料科学 材料科学 材料科学
背景情况:
- 污泥脱水面临挑战,原因是细胞外聚合物质 (EPS) 和结合水之间的强相互作用.
- 有效的污泥处理对于废水管理和资源回收至关重要.
研究的目的:
- 开发和评估一种新的协同调节方法,以提高污泥脱水效率.
- 调查改善脱水性能背后的机制.
主要方法:
- 一种使用铁 (II) (Fe2+) /氧硫酸盐 (PMS) 和聚烯胺 (PAM) 的综合调节方法.
- 使用特定过阻力 (SFR) 和毛细管吸收时间 (CST) 分析污泥脱水性能.
- 扩展德贾古恩-兰多-维维-奥弗比克 (XDLVO) 理论和弗洛里-哈金斯理论的应用,以了解表面特性和过机制.
主要成果:
- 在Fe2+/PMS-PAM调节方法下,SFR降低了82.75%,CST降低了80.44%.
- Fe2+/PMS前氧化有效降解了EPS,并释放了结合的水.
- PAM增强了污泥颗粒的花化,表面分析显示了从水友性向疏水性特征的转变.
结论:
- 协同Fe2+/PMS-PAM调节方法通过降解EPS和优化花,显著改善了污泥脱水.
- 热力学分析提供了对污泥调节和过机制的更深入的了解.
- 这种方法为污泥处理和管理提供了创新的策略.
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