J. Phys. IV France
Volume 137, November 2006
Page(s) 227 - 230
Publié en ligne 23 décembre 2006
35th Winter School on Wave and Quantum Acoustics
J. Bodzenta, M. Dzida and T. Pustelny
J. Phys. IV France 137 (2006) 227-230

DOI: 10.1051/jp4:2006137047

Occurrence of ultrasonic cavitation in sewage sludge

E. Zielewicz-Madej and P. Sorys

Institute of Water and Wastewater Engineering, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland

(Published online 23 December 2006)

The study revealed considerable differences in the susceptibility of the sludge to preliminary treatment by two kind of mixing and expressed as changes in the initial properties of the sludge and thus conditions for the occurrence of ultrasonic disintegration in particular sludge from wastewater treatment plants G, K and Z. The susceptibility of sludge to ultrasounds which depends on the sludge properties was explained by the higher COD of dissolved matter after ultrasonic disintegration of sludge.

© EDP Sciences 2006