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从造纸厂废水中提升TOC清除,使用带有硫酸盐源的空气介电屏障排放等离子体:机械洞察力和连续流操作性能评估

Nurhaslina Abd Rahman¹, Reneesha Valiyaveettil Basheer¹, So Yeon Yoon¹

¹Department of Environmental Engineering, Kwangwoon University, Seoul 01897, Republic of Korea; Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea.

Journal of hazardous materials

|December 29, 2024

概括

这项研究表明,将空气介电屏障放电 (DBD) 血与过氧化硫酸 (PDS) 结合起来,可以有效地从造纸厂废水中去除总有机碳 (TOC). 血-PDS工艺实现了94.5%的TOC去除,证明了其对工业应用的效率.

科学领域:

环境科学环境科学
化学工程是化学工程的重要组成部分.
水处理技术水处理技术

背景情况:

造纸厂的废水含有高水平的总有机碳 (TOC),这给环境带来了挑战.
传统的废水处理方法往往难以有效地去除耐火有机污染物.
先进的氧化过程 (AOPs) 显示出降解持久有机化合物的前景.

研究的目的:

调查空气介电屏障放电 (DBD) 血与硫酸氧化剂相结合的有效性,以从造纸厂废水中去除TOC.
阐明人硫酸盐 (过氧化硫酸盐 - PMS,过氧化硫酸盐 - PDS,硫酸盐 - SPS) 的激活机制.
在使用真实废水的连续流体实验中,评估最有效的等离子硫酸盐工艺的性能和稳定性.

主要方法:

空气介电屏障放电 (DBD) 等离子反应堆与各种硫酸盐来源 (PMS,PDS,SPS) 相结合.
使用火实验和电子自旋共振 (ESR) 识别活性物种的机制研究.
连续流体实验以评估实际造纸厂废水的长期性能和效率.

主要成果:

将空气DBD血与硫酸盐结合起来,显著提高了TOC去除动力学 (1.7-3倍更快).
等离子-PDS表现出最高的协同效应 (3.14) 和优越的TOC去除效率 (94.5%在8小时连续运行).
与依赖单片氧 (1O2) 的等离子PMS相比,等离子PDS产生了更有效的激素 (硫酸盐和基激素).

结论:

空气DBD等离子激活PDS是一种高效和协同的方法,用于从造纸厂废水中去除TOC.
等离子-PDS工艺表现出卓越的效率,稳定性和在工业废水处理中实际应用的潜力.
了解基性物种 (SO4•−,•OH,1O2) 和它们的作用对于优化基于等离子体的AOP至关重要.

关键词:

空气DBD等离子体成本分析成本分析脱矿化脱矿化硫酸盐的激活方式标识 ROS 的标识.

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