摘要
为探究影响臭氧氧化工艺运行效果的因素并优化其运行参数,介绍了臭氧氧化工艺的处理机制,基于文献分析了环境条件、臭氧投加量、臭氧接触时间对臭氧氧化效果的影响,明确了最佳臭氧投加量与最佳接触时间。分析表明:温度的上升能够提高臭氧消耗率和反应速率,但对有机物去除效果的影响较小;最理想的反应pH为7;臭氧最佳投加量的范围约为O_(3)/COD=0.13~0.25或O_(3)/TOC=0.5~1.2;当二级出水TOC>12 mg/L时,最佳臭氧接触时间为4~5 min;当二级出水TOC<12 mg/L时,最佳臭氧接触时间为10~15 min。
In order to explore the factors affecting the operation effect of ozone oxidation process and optimize the operation parameters,the treatment mechanism of ozone oxidation process was introduced.The effects of environmental conditions,ozone dosage and ozone contact time on the ozone oxidation efficiency were analyzed,and the optimal ozone dosage and contact time were defined based on literature.The analysis shows that the rise of temperature can increase the ozone consumption rate and reaction rate.However,it has little effect on the removal of organic matter.The optimum pH is 7.The range of optimum ozone dosage is about O_(3)/COD=0.13~0.25 or O_(3)/TOC=0.5~1.2.When the TOC concentration of secondary effluent is higher than 12 mg/L,the optimal ozone contact time is 4~5 min.When the TOC concentration of secondary effluent is lower than 12 mg/L,the optimal ozone contact time is 10~15 min.
作者
孔宇
杨笑康
任军俊
沈巍
陶蓉
宋海亮
KONG Yu;YANG Xiaokang;REN Junjun;SHEN Wei;TAO Rong;SONG Hailiang(Nanjing Municipal Design and Research Institute Co.,Ltd.,Nanjing 210008,China;School of Energy and Environment,Southeast University,Nanjing 210096,China;School of Civil Engineering,Southeast University,Nanjing 211189,China;Nanjing Shenkelong Technology Co.,Ltd.,Nanjing 211100,China;School of Environment,Nanjing Normal University,Nanjing 210023,China)
出处
《能源环境保护》
2021年第4期1-8,共8页
Energy Environmental Protection
基金
国家自然科学基金项目(41571476)。
关键词
臭氧氧化
污水厂尾水
环境条件
臭氧投加量
臭氧接触时间
Ozone oxidation
Effluent of wastewater treatment plants
Environmental conditions
Ozone dosage
Ozone contact time
