Decanter centrifuges for treating sewage sludge: fact check There are many benefits to using decanter centrifuges in sewage sludge treatment. Our expert Peisl Klaus explains the facts to you. Decanter centrifuges from Flottweg require little maintenance. Major servicing is only necessary every three years. In addition, decanter centrifuges are equipped with hollow rubber springs, which filter out 98% of vibrations. This reduces the sound volume to around a mere 80 decibels. Flottweg decanters ca