用三维电催化系统预处理超和高有机废水:一个试点规模的研究
Chengyi Fang1, Shiwei Xie2, Tian Xiao3
1School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China
概括
Ti-Sn-Sb@γ-Al2O3颗粒电极系统显著提高了用于工业预处理的废水的生物降解性. 这种三维电催化氧化 (3DEO) 系统为处理具有挑战性的废水流提供了有希望的解决方案.
科学领域:
- 环境科学 环境科学
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
背景情况:
- 耐火废水处理仍然是一个重大的环境挑战.
- 三维电催化氧化 (3DEO) 显示出潜力,但需要对工业规模进行优化.
- 来自工业园区的超和高有机废水需要先进的预处理方法.
研究的目的:
- 为了评估Ti-Sn-Sb@γ-Al2O3颗粒电极在3DEO系统中的有效性,用于工业废水预处理.
- 为了比较Ti-Sn-Sb@γ-Al2O3电极与3DEO系统中的活性碳电极的性能.
- 评估3DEO对废水生物降解性和化学氧需求 (COD) 消除的影响.
主要方法:
- 制备146.5公斤的Ti-Sn-Sb@γ-Al2O3粒子电极.
- 使用为工业废水预处理准备的电极建造和运行3DEO系统.
- 与使用活性碳粒子电极的3DEO系统进行比较.
主要成果:
- 该Ti-Sn-Sb@γ-Al2O3 3DEO系统实现了平均COD去除率为24.43%,能源消耗为102.8千瓦时/千克COD.
- 活性炭3DEO系统显示了更高的COD去除率48.73%,但消耗更少的能量31.4千瓦时/千克COD.
- 最重要的是,Ti-Sn-Sb@γ-Al2O3系统显著提高了生物化学指数 (B/C) 的690.5% (从0.021到0.166),提高了生物降解性,而活性碳显示的改善是微不足道的.
结论:
- 与3DEO系统中的活性碳相比,Ti-Sn-Sb@γ-Al2O3颗粒电极在提高废水生物降解性方面具有优越的催化能力.
- 虽然活性炭提供了更高的COD去除效率,但Ti-Sn-Sb@γ-Al2O3在改善废水的生物化学特性方面表现出色,使其更容易接受后续处理.
- 该研究为3DEO技术在过和高有机工业废水预处理中的应用提供了宝贵的工程见解.
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