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Pretreatment Characteristics and Specific Methanogenic Activity of Municipal Sewage Sludge by Dual Frequency Sonication
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 Title & Authors
Pretreatment Characteristics and Specific Methanogenic Activity of Municipal Sewage Sludge by Dual Frequency Sonication
Jung, Byung-Gil; Jang, Seong-Ho; Sung, Nak-Chang;
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 Abstract
The objectives of this study have been carried out to investigate the solubilization of municipal sewage sludge by single and dual frequency ultrasonic pretreatment, and the methane production characteristics of pretreated sewage sludge by specific methanogenic activity test for sewage sludge reduction. The waste activated sludge was collected from thickened tank of Suyoung sewage treatment plant in Busan city, and its concentration was adjusted to 1.0% total solids. Ultrasonic frequency was varied 15, 20, 15+20 kHz, and acoustic density was used a maximum 176W/L. The dual frequency ultrasonic pretreatment was found to be more effective than single frequency ultrasonic in the solubilization rate and methane production. The , rate were 15.2%, 13.9%, 17.0% with single frequency of 15 kH2, 20 kHz, dual frequency of 15+20 kHz, respectively. The application of dual frequency ultrasound for sewage sludge pretreatment can be interest for sewage treatment plants having problems in sludge treatment and disposal.
 Keywords
Dual frequency sonication;Specific methanogenic activity(SMA);Pretreatment;Sewage sludge;Sludge reduction;
 Language
Korean
 Cited by
1.
Sludge Solubilization using Microwave Irradiation in the Presence of Fe Powder,;;;

한국지하수토양환경학회지:지하수토양환경, 2010. vol.15. 2, pp.40-46
2.
혐기성 소화 효율 향상을 위한 초음파 주파수의 순차적 적용에 대한 연구,황규대;박성한;

상하수도학회지, 2011. vol.25. 6, pp.893-906
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