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http://dx.doi.org/10.5855/ENERGY.2011.20.2.084

A Study of Sewage Sludge Solubilization by Alkali and Ultrasonic pretreatment  

Kim, Jae-Hyung (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Yang, Hong-Gyu (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Lee, Joon-Cheol (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Park, Hong-Sun (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Choi, Gwang-Geun (G&G InTech, Gyeonggi R&DB Center)
Pak, Dae-Won (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Publication Information
Journal of Energy Engineering / v.20, no.2, 2011 , pp. 84-89 More about this Journal
Abstract
In this study, individual(alkaline, ultrasonic) and combined(alkaline+ultrasonic) pretreatment effect on sewage sludge solubilization was investigated. COD solubilization rates increased with the dose of NaOH added: solubilization reached 27.6%. Additional alkaline agents did not increase solubilization further. Ultrasonic pretreatment achieved 33~39% solubilization when 140 W/L amplitude. In(alkaline(pre-treatment)+ultrasonic (after-treatment)) treatment, solubilization increased as the combined intensity in creased($70.4{\pm}9.4%$). SCOD rising rate(0.076) was achieved.
Keywords
Sewage sludge; Solubilization; Alkali treatment; Ultrasonic treatment; Combined pretreatment;
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