降膜式等离子体-芬顿协同体系在KN-R废水处理中的性能与机理探究

doi:10.16553/j.cnki.issn1000-985x.2025.0037

摘要/Abstract

摘要： 随着工业发展，印染废水处理已成为环境保护的重要课题。活性艳蓝KN-R作为一种典型的印染废水染料，其降解效率直接影响废水处理的质量和环境安全。本研究针对活性艳蓝KN-R印染废水处理问题，设计了降膜式介质阻挡放电（DBD）等离子体反应器。实验结果显示，该装置在25 min内可有效去除84.30%的活性艳蓝KN-R。进一步将DBD等离子体与芬顿反应相结合，显著提升了染料的降解效率和矿化率。研究还分析了降解过程中的关键活性物质和降解途径，阐明了DBD等离子体与芬顿反应的协同作用机制，并且此体系在处理过程中二次污染少，对环境友好，这些发现为低温等离子体技术在工业废水处理中的应用提供了理论支持和实践指导。

关键词: 降膜式介质阻挡放电等离子体; 芬顿反应; 活性艳蓝KN-R; 印染废水处理; 降解效率; 协同作用

Abstract: With the development of industry， the treatment of printing and dyeing wastewater has become an important issue in environmental protection. As a typical dye in printing and dyeing wastewater， the degradation efficiency of reactive brilliant blue KN-R （RBB KN-R） directly affects the quality of wastewater treatment and environmental safety. Aiming at the problem of treating RBB KN-R printing and dyeing wastewater， this study designed a falling film dielectric barrier discharge （DBD） plasma reactor. The experimental results show that this device can effectively remove 84.30% of RBB KN-R within 25 min. Further combination of DBD plasma with the Fenton reaction significantly improves the degradation efficiency and mineralization rate of the dye. The study also analyzes the key reactive substances and degradation pathways during the degradation process， clarifies the synergistic mechanism between DBD plasma and the Fenton reaction. Moreover， this system causes less secondary pollution during the treatment process and is environmentally friendly. These findings provide theoretical support and practical guidance for the application of low-temperature plasma technology in the treatment of industrial wastewater.

Key words: falling film dielectric barrier discharge plasma; Fenton reaction; reactive brilliant blue KN-R; printing and dyeing wastewater treatment; degradation efficiency; synergistic effect

中图分类号:

石玮晔, 刘思翰, 赵书畅, 王帅, 王忠宝, 霍纯青. 降膜式等离子体-芬顿协同体系在KN-R废水处理中的性能与机理探究[J]. 人工晶体学报, 2025, 54(8): 1478-1490.

SHI Weiye, LIU Sihan, ZHAO Shuchang, WANG Shuai, WANG Zhongbao, HUO Chunqing. Investigation on Performance and Mechanism of the Falling Film-Type Plasma-Fenton Synergistic System in Treatment of KN-R Wastewater[J]. Journal of Synthetic Crystals, 2025, 54(8): 1478-1490.

图/表 14

图1 活性艳蓝KN-R化学结构式

Fig.1 Chemical structure of reactive brilliant blue KN-R

图2 降膜式低温介质阻挡放电（OBD）等离子体反应装置示意图（图中1为内电极，2为负极，3为石英管，4为储水罐）

Fig.2 Schematic diagram of the falling film dielectric barrier discharge （DBD） plasma reactor for low-temperature plasma treatment （1 represents the inner electrode， 2 denotes the ground electrode， 3 signifies the quartz tube， and 4 indicates the water storage tank）

图3 溶液初始浓度对活性艳蓝KN-R降解效果的影响（a），以及一级反应动力学拟合结果的影响（b）

Fig.3 Influence of initial solution concentration on the degradation efficiency of reactive brilliant blue KN-R （a）， and the fitting results of the first-order reaction kinetics （b）

图4 在初始浓度分别为50、100和150 mg/L的条件下，活性艳蓝KN-R溶液在25 min内的褪色情况

Fig.4 Fading behavior of reactive brilliant blue KN-R solutions within 25 min at initial concentrations of 50， 100， and 150 mg/L

图5 放电功率对活性艳蓝KN-R降解效果的影响（a），以及一级反应动力学拟合结果的影响（b）

Fig.5 Impact of discharge power on the degradation efficiency of reactive brilliant blue KN-R （a）， and the first-order reaction kinetics fitting results （b）

表1 输入功率、输出功率及能量输出效率计算结果（输入电压80 V）

Table 1 Calculations of input power， output power and energy output efficiency （input voltage 80 V）

Current/A	Input power/W	Output power/W	Output efficiency/%
1.70	136	61.93	45.54
1.80	144	73.50	51.04
1.90	152	79.66	52.40
2.00	160	83.34	52.09

图6 初始pH值对活性艳蓝KN-R降解效果的影响（a），一级反应动力学拟合结果的影响（b），以及溶液pH值在处理过程中的变化情况（c）

Fig.6 Impact of initial pH on the degradation of reactive brilliant blue KN-R （a）， the first-order reaction kinetics fitting results （b）， and the variation in solution pH value during the treatment process （c）

图7 液体循环流速对活性艳蓝KN-R降解效率的显著影响

Fig.7 Significant impact of liquid circulation velocity on the degradation efficiency of reactive brilliant blue KN-R

图8 DBD/Fenton体系中Fe2+加入量对活性艳蓝KN-R降解效率的影响（a），与单一DBD体系的性能对比（b），以及处理过程中溶液中H2O2浓度的变化情况（c）

Fig.8 Effects of Fe2+ addition on the degradation efficiency of reactive brilliant blue KN-R （a）， a performance comparison with the single DBD system （b）， and the variation in H2O2 concentration in the solution during the treatment process （c） in the DBD/Fenton system

图9 三个关键指标的变化情况

Fig.9 Variations of three critical indicators

图10 不同捕获剂加入对活性艳蓝KN-R降解效果的影响

Fig.10 Impact of various capture agent on the degradation efficacy of reactive brilliant blue KN-R

图11 活性艳蓝KN-R的降解过程分析

Fig.11 Analysis of the degradation process of reactive brilliant blue KN-R

图12 活性艳蓝一级质谱图

Fig.12 Reactive brilliant blue primary mass spectra

图13 活性艳蓝在不同降解时间的紫外-可见光谱

Fig.13 UV-Vis spectra of reactive brilliant blue at different degradation time

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