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DOI : , Vol.22, No.3, 21 ~ 30, 2014
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| Title |
| Effect of UASB HRT on the Removal of Organic Material in Anaerobic Sewage Treatment Processes |
| 전동걸 Dong Jie Tian , 임현숙 Hyun Suk Lim , 이봉규 Bong Gyu Lee , 임병서 Byung Seo Lim , 전항배 Hang Bae Jun |
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| Abstract |
| The effect of UASB HRT (up-flow anaerobic sludge blanket hydraulic retention time) on the removal of organic matter was investigated in a UASB-ABF (aerated bio-filter) anaerobic sewage treatment system at 3 different HRTs (72, 25 and 3hr). 30% of the influent TCOD was SCOD, and the last 70% was SSCOD of the raw sewage flowing into the primary sedimentation basin. 82% of the influent TCOD was removed in 72 hr UASB(caseⅠ), and 78mL of methane gas was produced per removed grams of COD. Similar TCOD removal occurred in caseⅡ, the UASB HRT of 25hr, while 71% of the influent TCOD was removed in caseⅢ, with a UASB HRT of 3hr. Methane gas did not produced enough to be measured in both caseⅡ and caseⅢ. Unlike TCOD removal, SS and turbidity removal occurred effectively in caseⅢ. About 40% of influent SCOD was removed by UASB at caseⅠ and caseⅡ, however, little SCOD was removed in caseⅢ. Almost 70% of influent TCOD was wasted as the raw sludge from UASB in caseⅢ. |
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| Key Words |
| Anaerobic Sewage Treatment, UASB, HRT, COD removal |
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