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	Effect of ozone on the performance of a hybrid ceramic membrane-biological activated carbon process
	Jianning Guo ; Jiangyong Hu ; Yi Tao ; Jia Zhu ; Xihui Zhang ; Jianning Guo ; Jiangyong Hu ; Yi Tao ; Jia Zhu ; Xihui Zhang
	2016-03-30 ; 2016-03-30
关键词	biological activated carbon ceramic membrane hybrid process ozone X703
其他题名	Effect of ozone on the performance of a hybrid ceramic membrane-biological activated carbon process
中文摘要	Two hybrid processes including ozonation-ceramic membrane-biological activated carbon(BAC)(Process A) and ceramic membrane-BAC(Process B) were compared to treat polluted raw water. The performance of hybrid processes was evaluated with the removal efficiencies of turbidity, ammonia and organic matter. The results indicated that more than 99% of particle count was removed by both hybrid processes and ozonation had no significant effect on its removal. BAC filtration greatly improved the removal of ammonia. Increasing the dissolved oxygen to 30.0 mg/L could lead to a removal of ammonia with concentrations as high as 7.80 mg/L and 8.69 mg/L for Processes A and B, respectively. The average removal efficiencies of total organic carbon and ultraviolet absorbance at 254 nm(UV254, a parameter indicating organic matter with aromatic structure) were 49% and 52% for Process A, 51% and 48% for Process B, respectively. Some organic matter was oxidized by ozone and this resulted in reduced membrane fouling and increased membrane flux by 25%–30%. However, pre-ozonation altered the components of the raw water and affected the microorganisms in the BAC, which may impact the removals of organic matter and nitrite negatively.; Two hybrid processes including ozonation-ceramic membrane-biological activated carbon(BAC)(Process A) and ceramic membrane-BAC(Process B) were compared to treat polluted raw water. The performance of hybrid processes was evaluated with the removal efficiencies of turbidity, ammonia and organic matter. The results indicated that more than 99% of particle count was removed by both hybrid processes and ozonation had no significant effect on its removal. BAC filtration greatly improved the removal of ammonia. Increasing the dissolved oxygen to 30.0 mg/L could lead to a removal of ammonia with concentrations as high as 7.80 mg/L and 8.69 mg/L for Processes A and B, respectively. The average removal efficiencies of total organic carbon and ultraviolet absorbance at 254 nm(UV254, a parameter indicating organic matter with aromatic structure) were 49% and 52% for Process A, 51% and 48% for Process B, respectively. Some organic matter was oxidized by ozone and this resulted in reduced membrane fouling and increased membrane flux by 25%–30%. However, pre-ozonation altered the components of the raw water and affected the microorganisms in the BAC, which may impact the removals of organic matter and nitrite negatively.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/148211]
专题	清华大学
推荐引用方式 GB/T 7714	Jianning Guo,Jiangyong Hu,Yi Tao,et al. Effect of ozone on the performance of a hybrid ceramic membrane-biological activated carbon process[J],2016, 2016.
APA	Jianning Guo.,Jiangyong Hu.,Yi Tao.,Jia Zhu.,Xihui Zhang.,...&Xihui Zhang.(2016).Effect of ozone on the performance of a hybrid ceramic membrane-biological activated carbon process..
MLA	Jianning Guo,et al."Effect of ozone on the performance of a hybrid ceramic membrane-biological activated carbon process".(2016).

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