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http://dx.doi.org/10.17137/korrae.2021.29.3.35

Sludge solubilization using sono-activated persulfate  

Moon, Sang-Jae (School of Civil & Environmental Engineering, Hankyong National University)
Nam, Se-Yong (School of Civil & Environmental Engineering, Hankyong National University)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.29, no.3, 2021 , pp. 35-40 More about this Journal
Abstract
In order to investigate the degree of solubilization of sewage sludge using sono-activated persulfate(UV/PP), VSS reduction rate, solubilization rate and extracellular polymeric substances were measured. Ultrasonic(US) and alkali·ultrasonic method using sodium hydroxide(US/SH) were compared. Under the persulfate·ultrasonic conditions, the VSS reduction rate and the solubilization rate increased to 27.6% and 58.9%, respectively. TB-EPS as Carbohydrate and Protein were extracted by 770 mg/L and 2,162 mg/L. Compared to the other methods, US and US/SH, the VSS reduction rate and solubilization rate were higher. And also, according to the TB-EPS values, cell wall destruction was more efficient.
Keywords
ultrasonic treatment; activated persulfate; sludge solubilization; extracellular polymeric substances;
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