Please use this identifier to cite or link to this item:
Title: Effect of ozone on the combination performance of ceramic membrane ultrafiltration-biological activated carbon filtration
Authors: Guo, J.-N.
Zhang, X.-H.
Zhang, J.-G.
Sheng, D.-Y.
Hu, J.-Y. 
Tao, Y.
Keywords: Biological activated carbon
Ceramic membrane
Polluted raw water
Issue Date: Nov-2013
Citation: Guo, J.-N.,Zhang, X.-H.,Zhang, J.-G.,Sheng, D.-Y.,Hu, J.-Y.,Tao, Y. (2013-11). Effect of ozone on the combination performance of ceramic membrane ultrafiltration-biological activated carbon filtration. Zhongguo Huanjing Kexue/China Environmental Science 33 (11) : 1946-1952. ScholarBank@NUS Repository.
Abstract: Two combination processes, including ozonation-ceramic membrane-biological activated carbon (BAC) (process I) and ceramic membrane-BAC (process II), were tested to treat polluted raw water. The performance was evaluated with the removal efficiencies of turbidity, ammonium and organic matters in a scale of 3 L/d. The effects of ozone on membrane flux and BAC were also considered. More than 96% of turbidity was removed by both combination processes either with or without ozone addition. The ammonium that can be removed by both processes was limited to 1.0~2.0 mg/L. Increasing the dissolved oxygen to 30.0 mg/L can lead to a complete removal of ammonium with the concentration as high as 5.5 mg/L. The average removal efficiencies of the total organic carbon (TOC) and ultraviolet absorbance at 254 nm were 48.3% and 51.8% for process I without ozone addition, 51.1% and 48.2% for process II when ozone dosage was 2.0 mg/L. Ozonation had no effect on turbidity removal, while it resulted in the changes of organic molecular structure at an ozone dosage of 2.0 mg/L and this helped alleviate the membrane fouling. Membrane flux in process I increased by 25%~30% compared with that in process II with no ozone addition. However, residual ozone may affect the microbial activities in the BAC, which impacted the removals of organic matter and ammonia negatively.
Source Title: Zhongguo Huanjing Kexue/China Environmental Science
ISSN: 10006923
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Jun 21, 2021

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.