Abstract
The effect of ultrasound on total mass, dewaterability, turbidity, and coliform counts of livestock waste sludge was investigated. The study involved laboratory tests and pilot plant experiment under various test conditions including sonication time, ultrasonic energy level, and sludge volume. Laboratory test results showed that sonication caused a decrease in sludge particle size, capillary suction time, and coliform counts. Pilot plant experiment results showed that ultrasonic treatment significantly improved dewaterability, and reduce the volume, mass, and water content of sludge.
