Abstract: Ammonia-based feedback aeration control could avoid an unnecessary air supply and, therefore, save energy. However, this control method could be impacted by many factors such as solids retention time (SRT), nitrite oxidation ...

Abstract: Effects of solids retention time (SRT) on both steps of the nitrification process (e.g., ammonia oxidation and nitrite oxidation) and the nitrifier community in a complete-mix activated sludge process were studied. At a ...

Abstract: To clarify the effective load transfer capacity of asphalt mixture skeletons, granular material mechanics and the discrete-element method (DEM) were introduced to analyze the morphological characteristics of skeleton main ...

Abstract: In asphalt mixtures, external loading transfer paths can be deemed as force chains. The force chains difference can be used to evaluate skeleton structure. In this study, various asphalt mixture virtual specimens were ...

Abstract: A novel wastewater treatment configuration—the Baffled Bioreactor (BBR)—was tested for municipal wastewater treatment at pilot-scale. This patented BBR is characterized by a hydraulically driven sludge recycling mechanism ...