化工环保2025，Vol.45Issue(5)：644-651,8.DOI:10.3969/j.issn.1006-1878.2025.05.007
基于臭氧微细气泡的高盐有机废水处理
Treatment of hypersaline organic wastewater with ozone fine bubbles
摘要
Abstract
Ozone fine bubble generators were employed to treat simulated hypersaline organic wastewater,and this study comparatively investigated the influence patterns of three fine bubble generation methods,namely a self-developed jet flow tubular microbubble generator,a horizontal dissolution tank,and a microporous diffuser,on COD removal rate,ozone utilization efficiency,and ozone mass transfer coefficient.Experimental results demonstrate that the jet flow tubular microbubble generator produces the smallest microbubble size,which is advantageous for enhancing COD removal rate,ozone utilization efficiency,and mass transfer coefficients.With an increase in influent flow rate,dissolution pressure,gas-liquid ratio,and initial ozone concentration,both the COD removal rate and ozone mass transfer coefficient of the jet flow tubular microbubble generator progressively increase.Under the conditions of an inlet COD 200 mg/L,an influent flow rate of 0.8-1.2 m3/h,dissolution pressure of 0.25 MPa,gas-liquid ratio of 10%,and initial ozone mass concentration of 75.5 mg/L,the COD removal rate in the wastewater reaches 36.35%-43.40%with an ozone utilization efficiency of 83.00%-87.55%.When NaCl concentration in wastewater rises from 2 000 mg/L to 10 000 mg/L,treatment with the jet flow tubular microbubble generator achieves a COD removal rate of 36.31%-39.64%and ozone utilization efficiency of 93.11%-94.56%,demonstrating its excellent adaptability to high-salinity wastewater.关键词
高盐有机废水/臭氧/微细气泡/气液传质Key words
hypersaline organic wastewater/ozone/fine bubbles/gas-liquid mass transfer分类
环境科学引用本文复制引用
陈家庆,李子阳,丁国栋,张国徽,杨白中恒,李本高..基于臭氧微细气泡的高盐有机废水处理[J].化工环保,2025,45(5):644-651,8.基金项目
国家自然科学基金面上项目(52274059) （52274059）
北京市博士后工作经费资助项目(2023-ZZ-070). （2023-ZZ-070）
