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KMID : 1024520020110040339
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Journal of the Environmental Sciences
2002 Volume.11 No. 4 p.339 ~ p.346
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Changes of physico-chemical properties of the activated sludges with anaerobic storage time
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Lee Chang-Han
Na Young-Soo
Kim Do-Han
Lee Song-Woo
Song Seung-Koo
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Abstract
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Physico-chemical properties of the activated sludges(Suyoung and Changlim treatment plant), such as SVI(sludge volume index), absorbance, specific surface area, and specific resistance using Buchener funnel test were investigated with changing anaerobic storage time. This experimental condition was found that it was possible to estimate a linear relationship between their parameters such as specific surface area specific resistance, and sludge volume index(SVI). The specific surface area and the specific resistance to filtration of the activated sludges of Suyoung and Changlim treatment plant were found as 123.6~136.6/gDS and 41.5~44.9/gDS(dry solid), and 1.0910 ~5.4810 m/kg and 1.0510 ~2.4810 m/kg, respectively. The results gave a good linear relationship between the specific surface area and the specific resistance, r=2.2510 s-8.1010 (=0.8885) at Suyoung treatment plant and r=1.2610 s-4.7510 (=0.8756) at Changlim treatment plant.
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KEYWORD
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Anaerobic storage time, Specific surface area, Specific resistance, Activated sludge
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