UV/O_(3)/PS耦合工艺在含酚废水处理中的应用  

Application of UV/O_(3)/PS coupling process in the treatment of phenol wastewater

作　　者：赵剑秋 王铮[1] 杨世鹏 常风民 彭思伟 王凯军 ZHAO Jianqiu;WANG Zheng;YANG Shipeng;CHANG Fengmin;PENG Siwei;WANG Kaijun(College of Geology and Environment,Xi'an University of Science and Technology,Xi'an 710054,China;State Key Joint Laboratory of Environment Simulation and Pollution Control,School of Environment,Tsinghua University,Beijing 100084,China;Datang Environment Industry Group Co.Ltd.,Beijing 100097,China)

机构地区：[1]西安科技大学地质与环境学院,西安710054 [2]清华大学环境学院,环境模拟与污染控制国家重点联合实验室,北京100084 [3]大唐环境产业集团股份有限公司,北京100097

出　　处：《环境工程学报》2023年第1期71-81,共11页Chinese Journal of Environmental Engineering

基　　金：大唐环境产业集团股份有限公司催化臭氧氧化技术在难降解废水深度处理过程中的运用与装备研发(P-TP-22-000000221)。

摘　　要：针对目前高级氧化技术处理含酚废水存在O_(3)利用率低等缺点,为提高反应体系强氧化性物质的含量,强化水体中酚类物质的降解与矿化,提出了UV/O_(3)/PS耦合体系;在探究多种不同耦合体系的苯酚降解率和TOC去除率、反应影响因素和活性物质的基础上,进一步发掘该体系降解含酚废水的潜力与优势。结果表明:UV/O_(3)/PS体系在15 min内可将苯酚完全降解;相较于单一的UV/O_(3)法或UV/PS法,水中酚类的矿化率分别提高了47.36%和39.93%;通过对多种影响因素进行分析,确定了UV/O_(3)/PS体系中合适的O_(3)与PS投加量,并发现UV/O_(3)/PS体系对pH和HCO_(3)-适应范围较广,在难降解废水处理中具有广泛的应用价值;通过ESR分析发现耦合体系在UV的催化下产生的·OH和·SO_(4)^(-)比单一体系更多,具有促进作用。由此可知,UV/O_(3)/PS耦合工艺能在较广的适应范围内较好的降解酚类物质。该研究结果可为UV/O_(3)/PS耦合工艺对含酚废水的降解提供理论参考。In view of the low utilization rate of O_(3)in the treatment of phenol containing wastewater by the advanced oxidation technology at current, UV/O_(3)/PS coupling system is proposed to improve the content of strong oxidizing substances in the reaction system and strengthen the degradation and mineralization of phenol substances in the wastewater;On the basis of exploring the phenol degradation rate, TOC removal rate, reaction influencing factors and active substances of various coupling systems, the potential and advantages of this system in degrading phenolic wastewater were further studied. The results showed that the UV/O_(3)/PS system could completely degrade phenol within 15 minutes. Compared with the single UV/O_(3)method or UV/PS method, the mineralization rate of phenols in water increased by 47.36% and 39.93%, respectively. Through analysis of various influencing factors, the appropriate dosages of O_(3)and PS in the UV/O_(3)/PS system were determined. It was found that the UV/O_(3)/PS system had a wide range of adaptability to pH and HCO_(3)-, which implied that this system had an extensive application value in the treatment of refractory wastewater. In addition,ESR analysis showed that the coupling system produced more ·OH and ·SO_(4)^(-)under the catalysis of UV than the single system, which had a promoting effect. Thus, the UV/O_(3)/PS coupling process had a better performance on phenols degradation in a wide range of applications. The research results can provide a theoretical reference for the degradation of phenolic wastewater by UV/O_(3)/PS coupling process.

关 键 词：UV/O_(3)/PS 自由基 含酚废水 高级氧化 协同效应 

分 类 号：X703[环境科学与工程—环境工程]