Friedrich, H.H.FriedrichPotthoff, A.A.PotthoffFriedrich, E.E.FriedrichHielscher, H.H.Hielscher2022-03-092022-03-091999https://publica.fraunhofer.de/handle/publica/333709en666620Improving settling properties and dewaterability of sewage sludges by application of the ultrasound technologyconference paper