|
KMID : 1024520050140030327
|
|
Journal of the Environmental Sciences
2005 Volume.14 No. 3 p.327 ~ p.333
|
|
|
Decomposition of Organic Matters by Ozonation in Advanced Water Treatment Process
|
|
Yoon Tae-Kyung
Lee Gang-Choon
Noh Byeong-Il
|
|
|
Abstract
|
|
|
|
The performance of ozone contactor in ozone-BAC advanced water treatment process was evaluated by the degree of decomposition of organic matters. The degree was measured by the analyses of absorbance and the concentrations of DOC and BDOC for the sand filtered water and the ozone treated water, respectively. In addition, the ozone concentration in the contactor, required for the maximum BDOC concentration, was selected as the optimum concentration, and the appropriate residential time of ozone treated water in a reservoir was recommended based on the residual ozone concentration in the treated water. The following results were obtained from the pilot scale experiments. By ozonation absorbance was decreased, and BDOC concentration was increased. The change of DOC concentration by ozonation was negligible, but the excess input of ozone resulted in the removal of the small amount of BDOC by complete oxidation. The optimum ozone concentration was 0.58mg DOC. In order to remove residual ozone, 20minutes of the residential time were enough after ozonation.
|
|
|
KEYWORD
|
|
|
Water Purification, Advanced Water Treatment, Ozonation, Ozone, DOC, BDOC
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|