通过流化电极增强污泥溶解:颗粒活性炭促进了电化学氧化
Zhanhang Wang1, Jingwei Ma1, Liang Zhu1
1Hunan Engineering Research Center of Water Security Technology and Application, College of Civil Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha 410082, China.
Bioresource technology
|December 19, 2023
概括
颗粒状活性炭通过提高导电性和污泥分解来增强电化学污泥预处理. 这种流化电极电化学系统为污泥处理提供了有效,绿色和可持续的解决方案.
科学领域:
- 环境工程 环境工程
- 电化学 电化学 电化学
- 废水处理 废水处理
背景情况:
- 电化学污泥预处理为环境提供了好处,但由于电极面积和污泥导电性而面临限制.
- 低污泥导电性和有限的电极表面积阻碍了电化学预处理的广泛采用.
研究的目的:
- 为了提高电化学污泥预处理使用颗粒活性炭 (GAC) 在流体化电极电化学系统 (FEE).
- 调查GAC增强的FEE用于污泥分解的有效性和机制.
主要方法:
- 开发一种含有颗粒活性炭 (GAC) 的流化电极电化学系统 (FEE).
- 优化FEE系统的操作参数.
- 分析污泥分解指标,包括可溶化学氧需求 (SCOD) 和污泥体积减少.
- 调查潜在的机制,重点是提高导电性和产生过氧化.
主要成果:
- 在最佳条件下,FEE系统与GAC实现了126%的SCOD增加和23.1%的污泥量减少.
- 加GAC显著提高了污泥导电性,提高了FEE系统的氧化能力.
- 在FEE系统内不断生成H2O2进一步有助于污泥溶解.
结论:
- 颗粒状活性炭通过提高导电性和促进污泥分解,有效地增强了电化学污泥预处理.
- 开发的GAC增强的FEE系统为污泥管理提供了一种绿色,可持续和高效的方法.
- 该方法解决了传统电化学预处理的关键局限性,为更广泛的应用铺平了道路.
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