[Determination for optimal ozone dose in O3-BAC].
The ozonation can increase biodegradability of water and the biofilter after ozonation can increase biostability of water. The result shows that with different doses of ozone between 2 and 8 mg/L, ozonation can increase AOC-P17, AOC-NOX and BDOC by 20.9%-85.5%, 42.1%-158.2% and 21.4%-84.4%, respectively. The optimum ozone dose for maximum AOC and BDOC formation is 3 mg/L. In the test, the AOC of effluent from BAC is lower than 50 microg/L (acetate-C). The AOC concentration is between 35.9 and 46.6 microg/L (acetate-C), and the effluent belongs to biostability.
Kong
Ling-yu
LY
Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China. konglingyu00@mails.tsinghua.edu.cn
Zhang
Xiao-jian
XJ
Wang
Zhan-sheng
ZS
D002606:Charcoal / Q000737:chemistry*; D004784:Environmental Monitoring; D005374:Filtration / Q000379:methods; D010126:Ozone / Q000032:analysis* / Q000737:chemistry; D014873:Water Pollutants / Q000032:analysis; D018508:Water Purification / Q000379:methods*; D014881:Water Supply / Q000032:analysis*
D014873:Water Pollutants; D002606:Charcoal; D010126:Ozone