A novel energy-saving technology for noise reduction of rotary aerators in sewage treatment plants

Abstract

Abstract For oxidation ditch wastewater treatment in the sewage treatment plant, a rotary aerator is often used for aeration. Large noise will be generated during the aeration process, which seriously affects the daily life of nearby residents and workers. This article describes how to reduce noise using the positive and negative pressure difference formed by the rotating brush on both sides and the natural ventilation muffling channel that does not require additional electrical energy in order to replace the traditional closed sound insulation which requires adding a blower to meet the aeration and oxygenation demands. In this way, electrical energy can be saved and noise can be reduced.