Application of Ultrasound Waves for Sludge Dewatering

Because of increase in application of biological processes in wastewater treatment plants the amount of sludge produced by them is increasing rapidly. Therefore finding new sludge reduction technologies in wastewater treatment plants is very important. Nowadays ultrasound waves have an increase rate of application in full scale in wastewater industry. The most important advantages of ultrasound waves are such as: No sludge production, ease of use, increasing the biogas production, contributing to dewatering, no secondary pollution and degradation of complex materials into simpler substances. In this research, different applications of ultrasound waves in wastewater and sludge treatment and improving dewaterabilty of sludge is investigated.

Dewaterability; Ultrasonic; Cavitation; biodegradation; Sludge