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DOI : , Vol.22, No.2, 73 ~ 80, 2014
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| Title |
| Disintegration of Sewage sludge using Ultrasonic Pretreatment and Combined Use of Heat and Alkali |
| 신관우 Gwan Woo Shin , 이한슬 Han Seul Lee , 강민구 Min Koo Kang , 이상일 Sang Ill Lee |
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| Abstract |
| In this study, the sonication according to MLSS and temperature was performed with the processing for the solubilization of the sewage sludge and compared it with performing combined use of Alkali . The disintegration of the organic component could be confirmed through the sonication and Alkali treatment. In the change of SCOD/MLSS according to MLSS, MLSS 7,200 mg/L showed the optimum sludge disintegration. In the change of SCOD/MLSS according to temperature, when temperature is 80℃, decomposed organic matter is the most but, it makes no difference when temperature is 70℃, so we decide best temperature to 70℃ considering energy consumption on applying heat. In the change of SCOD/MLSS according to temperature holding time, 1 hour holding time showed the optimum sludge disintegration. In the change of SCOD/MLSS according to the NaOH density, the NaOH of the high concentration not was exposed to be of effect to the sludge disassembly efficiency by the ultrasonic wave. |
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| Key Words |
| Sewage sludge, Ultrasonic Pretreatment, Chemical Pretreatment, SCOD/MLSS |
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