Effect of Ultrasonic Pre-Treatment on Anaerobic Digestability and Sludge Characteristics of Two Different Effluents

K. Koch & J. Bandeline
The effects of an ultrasonic pre-treatment of the effluents from a municipal wastewater treatment plant (WWTP) and an agricultural biogas plant (ABP) were analyzed. By comparing the resulting methane productions of the treated samples to the untreated ones, a maximum temporarily acceleration of 80% was measured for the WWTP effluent with a pre-treatment duration of 30 minutes. For ABP effluent, the 0.5 minutes pre-treatment gained the maximum temporarily plus of 30 %. In both cases,...