使用生物炭作为粒子电极的三维电化学系统对老化液进行处理
Fangze Wang1, Chengze Ye1, Jiayi Wang1
1ZJU-UIUC Institute, Zhejiang University, Haining, People's Republic of China.
Environmental technology
|March 27, 2025
概括
使用子生物炭的新型三维电催化氧化 (3D-ECO) 系统有效处理老化垃圾填埋液,与2D系统相比,显著改善污染物去除和减少能源消耗.
科学领域:
- 环境科学 环境科学
- 水处理工程水处理工程
- 电化学 电化学 电化学
背景情况:
- 老化垃圾填埋场液由于耐火有机污染物,如性物质和高氨 (NH3-N) 等,存在挑战.
- 传统的处理方法往往与老液的复杂和反抗性质作斗争.
- 电催化氧化 (ECO) 为废水处理提供了一个潜在的先进氧化过程.
研究的目的:
- 开发和评估一种新的三维电催化氧化 (3D-ECO) 系统,用于处理老旧的垃圾填埋场液.
- 研究子生物炭 (CBC) 作为粒子电极在增强3D-ECO过程中的作用.
- 将3D-ECO系统的效率和机制与二维 (2D) 系统进行比较.
主要方法:
- 使用复合材料装载金属阳极,阴极和CBC粒子电极构建3D-ECO系统.
- 优化电化学反应条件,包括pH值,电流密度,粒子剂量和电极间距.
- 在2D和3D系统之间对污染物去除 (COD,NH3-N) 和能源消耗进行比较分析.
- 研究电化学降解机制和涉及的活性物种.
主要成果:
- 在最佳条件下 (pH 5,30 mA/cm2,7 g/L CBC,4 cm间隔) 产生了高的去除率:90.2%的COD和30.4%的NH3-N.
- 与2D系统相比,3D-ECO系统实现了明显更高的去除效率 (49.1%的有机污染物增加) (41.1%的COD,17.4%的NH3-N).
- 引入CBC将能耗降低57.2%,并通过与阳极的协同效应提高了污染物清除.
结论:
- 结合CBC粒子电极的3D-ECO系统对于处理老旧的垃圾填埋场液非常有效.
- 性能提升归因于3D反应堆内的活性表面积增加和协同相互作用.
- 这项技术显示出对耐火垃圾填埋场废水的可持续和高效管理的重大前景.
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