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http://dx.doi.org/10.5668/JEHS.2008.34.1.076

Nutrient Removal Characteristics by the Addition Ratio of BNR Sludge in SBR  

Kim, Dong-Seog (Department of Environmental Science, Catholic University of Daegu)
Park, Young-Seek (Department of Health & Environment, Daegu University)
Publication Information
Journal of Environmental Health Sciences / v.34, no.1, 2008 , pp. 76-85 More about this Journal
Abstract
Biological nutrient removal (BNR) sludge was added to a sequencing batch reactor (SBR) in the addition ratios of 0%, 20%, 40%, 50% while observing the variation of nutrient removal characteristics and microorganism groups. When the BNR sludge was added in a ratio over 40%, the characteristics of EBPR (enhanced biological phosphorus removal) was shown at the 27 days. However, a distinct BNR was not shown when the addition ratio of BNR sludge was lower than 40%. The organic removal efficiency were shown as 90% in all SBRs irrespective of the addition ratio of BNR sludge. At the 27 days, the phosphorus removal efficiencies were shown as 40%, 55%, 77% and 69%, respectively, according to the addition ratio of BNR sludge. Overall, efficient nitrification and phosphorus removal was shown when the added BNR sludge ratio was over 40%.
Keywords
SBR; BNR sludge; addition ratio; nutrient removal;
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Times Cited By KSCI : 4  (Citation Analysis)
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