高浓度羟基自由基水对室内生物气溶胶消杀的实验研究

摘要新冠疫情的施虐让空气的绿色高效消毒杀菌成为急需解决的问题。以空气中生物气溶胶为研究对象,创建螺旋切割器辅助制备高浓度臭氧水循环装置,结合逆流式填料过滤器进行空气杀菌。探究不同pH值和温度对臭氧水浓度和羟基自由基浓度的影响。结果表明:在pH=7,25 ℃的条件下,平衡臭氧水浓度可达11.65 m·L^-1,羟基自由基浓度达到95.84 μmol·L^-1。并进一步探究不同pH值、温度、喷淋流量和风速对杀菌率的影响。结果表明:在pH=7、25 ℃、喷淋流量500 L·h^-1和风速2.5 m·s^-1的条件下,杀菌时间20、40和60 min的杀菌率分别为77.3%、87.6%和96.7%。因此,高浓度臭氧水循环装置结合填料过滤器对空气中气溶胶微生物具有良好的杀菌效果。

	Service

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	Email Alert
	RSS
	作者相关文章
	王帅
	况欣怡
	赵紫琴
	廖宏国
	崔政伟

关键词：臭氧羟基自由基填料过滤器生物气溶胶杀菌率

Abstract： Environmental safety issues such as air disinfection and sterilization caused by COVID-19 have become hot spots that need to be solved urgently. In this study, a spiral cutter was used to nanoscale bubble and prepare a high-concentration ozone water in a circulation device. Then combined it with a counterflow packing filter, the novel air sterilization rig was set up for killing biological aerosol pathogens in air. The effects of different pH values and temperatures on ozone water concentration and hydroxyl radical concentration were then investigated. The experimental results show that the concentration of ozone water after equilibrium can reach 11.65 m·L^-1 and the concentration of hydroxyl radical reaches 95.84 μmol·L^-1 under the condition of pH=7 and temperature of 25 ℃. The effects of different pH, temperature, spray flow and wind speed on the sterilization rate were further explored. The experimental results show that the sterilization rates of 20, 40 and 60 min are 77.3%, 87.6% and 96.7%, respectively under the conditions of pH=7, temperature 25 ℃, spray flow rate 500 L·h^-1 and wind speed of 2.5 m·s^-1. Therefore, the current high-concentration ozone water circulation device combined with the packing filter has a good sterilization effect for air sterilization.

Keywords： ozone hydroxyl radicals counterflow packing filter biological aerosol pathogens sterilization rate

Received 2022-11-16;

Corresponding Authors: 崔政伟,教授,E-mail:cuizhengwei@jiangnan.edu.cn。 Email: cuizhengwei@jiangnan.edu.cn

About author: 王帅(1998-),男,硕士研究生,现从事空气质量方面的研究。

引用本文:

王帅, 况欣怡, 赵紫琴, 廖宏国, 崔政伟.高浓度羟基自由基水对室内生物气溶胶消杀的实验研究[J]. 化学工业与工程, 2024,41(4): 109-116

WANG Shuai, KUANG Xinyi, ZHAO Ziqin, LIAO Hongguo, CUI Zhengwei.Experimental investigation of hydroxyl radicals in high concentration for killing biological aerosol pathogens in indoor air[J]. Chemcial Industry and Engineering, 2024,41(4): 109-116

[1] 孙婷, 刘凤娟. 室内空气中微生物污染控制方法研究进展[J]. 环境生态学, 2021(9): 79-82, 87 SUN Ting, LIU Fengjuan. Research progress of microbial pollution control methods in indoor-air[J]. Environmental Ecology, 2021(9): 79-82, 87(in Chinese)
[2] 王莲, 马金珠, 贺泓. 室内生物气溶胶消杀措施及启示[J]. 环境工程学报, 2020, 14(7): 1710-1717 WANG Lian, MA Jinzhu, HE Hong. Technologies and suggestions for killing biological aerosol pathogens in indoor air[J]. Chinese Journal of Environmental Engineering, 2020, 14(7): 1710-1717(in Chinese)
[3] CITU C, GORUN F, MOTOC A, et al. The predictive role of NLR, d-NLR, MLR, and SIRI in COVID-19 mortality[J]. Diagnostics, 2022, 12(1): 122
[4] 郭云涛, 张东荷雨, 张丽阳, 等. 新型冠状病毒等病原体空气消毒技术综述[J]. 清华大学学报(自然科学版), 2021, 61(12): 1438-1451 GUO Yuntao, ZHANG Dongheyu, ZHANG Liyang, et al. Summary of air disinfection technology for pathogens such as novel coronavirus[J]. Journal of Tsinghua University (Science and Technology), 2021, 61(12): 1438-1451(in Chinese)
[5] HAGHIGHI M, KAZEMI M V, DABBAGH M A, et al. Optimization of ozonation process for disinfection of dental unit waterlines using response surface methodology[J]. Ozone: Science & Engineering, 2020, 42(1): 54-65
[6] ZHOU H, SMITH D W. Advanced technologies in water and wastewater treatment[J]. Canadian Journal of Civil Engineering, 2001, 28(S1): 49-66
[7] 任汉文, 蔡璇, 朱煜, 等. 臭氧消毒技术研究进展[J]. 给水排水, 2011, 37(S1): 207-211 REN Hanwen, CAI Xuan, ZHU Yu, et al. Research and development of ozone disinfection[J]. Water & Wastewater Engineering, 2011, 37(S1): 207-211(in Chinese)
[8] 房小健. 紫外线联合臭氧催化对室内空气动态消毒的研究[D]. 哈尔滨: 哈尔滨工业大学, 2013 FANG Xiaojian. Study on dynamic disinfection of indoor air by ultraviolet combined with ozone catalysis[D]. Harbin: Harbin Institute of Technology, 2013 (in Chinese)
[9] ZHU S, DONG B, YU Y, et al. Heterogeneous catalysis of ozone using ordered mesoporous Fe₃O₄ for degradation of atrazine[J]. Chemical Engineering Journal, 2017, 328: 527-535
[10] TAKAHASHI M, HORIBE H, MATSUURA K, et al. Effect of microbubbles on ozonized water for photoresist removal[J]. Journal of Photopolymer Science and Technology, 2015, 28(2): 293-298
[11] 邵青, 王颖, 李晶, 等. 紫外/臭氧工艺在水处理中的技术原理及研究进展[J]. 中国给水排水, 2019, 35(14): 16-23 SHAO Qing, WANG Ying, LI Jing, et al. Technical principle and research progress of UV/O₃ process in water treatment[J]. China Water & Wastewater, 2019, 35(14): 16-23(in Chinese)
[12] 张宇琪. 湿式颗粒层的过滤机理及实验研究[D]. 山东青岛: 青岛理工大学, 2016 ZHANG Yuqi. Filtration mechanism and experimental study of wet granular layer[D]. Shandong Qingdao: Qingdao Tehcnology University, 2016 (in Chinese)
[13] DUBINSKAYA F E. A priori estimation for coefficients in the energy theory of wet dust trapping[J]. Chemical and Petroleum Engineering, 2001, 37(9): 525-529
[14] 高哲, 赵枫, 俞建峰, 等. 不同结构静态螺旋混合器强化湿法脱硫数值模拟[J]. 化学工业与工程, 2020, 37(3): 50-59 GAO Zhe, ZHAO Feng, YU Jianfeng, et al. Numerical simulation of wet desulfurization by screw static mixer with different structure[J]. Chemical Industry and Engineering, 2020, 37(3): 50-59(in Chinese)
[15] 翟文慧, 张濛. 多功能臭氧水消毒机杀菌消毒效果的试验观察[J]. 环境卫生学杂志, 2013, 3(2): 145-147, 151 ZHAI Wenhui, ZHANG Meng. Observations on disinfection effects of multifunctional ozone water disinfection machine[J]. Journal of Environmental Hygiene, 2013, 3(2): 145-147, 151(in Chinese)
[16] FLYUNT R, LEITZKE A, MARK G, et al. Determination of ·OH, O^·-₂, and hydroperoxide yields in ozone reactions in aqueous solution[J]. The Journal of Physical Chemistry B, 2003, 107(30): 7242-7253
[17] 刘剑, 刘艳芳, 杨玉萍, 等. 空气霉菌总数测定方法分析[J]. 装备环境工程, 2018, 15(5):29-32 LIU Jian, LIU Yanfang, YANG Yuping, et al. Measurement analysis of fungal counts in air[J]. Equipment Environmental Engineering, 2018, 15(5): 29-32(in Chinese)
[18] 倪丽, 郭晓滨, 金菁. 絮凝沉淀-臭氧氧化法处理DDNP生产废水[J]. 科技信息, 2009(4): 58-59 NI Li, GUO Xiaobin, JIN Jing. Flocculation precipitation-ozone oxidation treatment of DDNP production wastewater [J]. Science & Technology Information, 2009(4): 58-59(in Chinese)
[19] WANG J, BAI Z. Fe-based catalysts for heterogeneous catalytic ozonation of emerging contaminants in water and wastewater[J]. Chemical Engineering Journal, 2017, 312: 79-98
[20] RISCHBIETER E, STEIN H, SCHUMPE A. Ozone solubilities in water and aqueous salt solutions[J]. Journal of Chemical & Engineering Data, 2000, 45(2): 338-340
[21] GAO M, HIRATA M, TAKANASHI H, et al. Ozone mass transfer in a new gas-liquid contactor: Karman contactor[J]. Separation and Purification Technology, 2005, 42(2): 145-149
[22] 钟理, 张浩, 陈英, 等. 臭氧在水中的自分解动力学及反应机理[J]. 华南理工大学学报(自然科学版), 2002, 30(2):83-86 ZHONG Li, ZHANG Hao, CHEN Ying, et al. Investigation of kinetics and reaction mechanismfor self-decomposition of ozone in water[J]. Journal of South China University of Technology (Natural Science Edition), 2002, 30(2): 83-86(in Chinese)
[23] MA J, SUI M, ZHANG T, et al. Effect of pH on MnO_x/GAC catalyzed ozonation for degradation of nitrobenzene[J]. Water Research, 2005, 39(5): 779-786
[24] ASGARI G, SAMIEE F, AHMADIAN M, et al. Catalytic ozonation of pentachlorophenol in aqueous solutions using granular activated carbon[J]. Applied Water Science, 2017, 7(1): 393-400
[25] 程雯, 全学军, 罗丹, 等. 微泡强化臭氧传质及其对产生羟基自由基的影响[J]. 化学反应工程与工艺, 2017, 33(5):458-465 CHENG Wen, QUAN Xuejun, LUO Dan, et al. Intensification of ozone mass transfer by microbubbles and its effect on hydroxyl radical production[J]. Chemical Reaction Engineering and Technology, 2017, 33(5): 458-465(in Chinese)
[26] OLUJIC Z, BEHRENS M, COLLI L, et al. Predicting the efficiency of corrugated sheet structured packings with large specific surface area[J]. Chemical and Biochemical Engineering Quarterly, 2004, 18(2): 89-96
[27] 王苗, 杜鑫, 王毅. 旋风-颗粒床过滤器两级除尘的分析与优化[J]. 化学工程, 2020, 48(4):55-59 WANG Miao, DU Xin, WANG Yi. Analysis and optimization on two-stage dust removal of cyclone separator-granular bed filter[J]. Chemical Engineering, 2020, 48(4): 55-59(in Chinese)