Siphon downflow hanging sponge reactor with influent bypass system
The siphon downflow hanging sponge (siphon DHS) was developed by integrating a siphon tube to create anoxic and anaerobic zones for enhanced denitrification. However, limited aerobic volume resulted in low nitrification rates. In this study, the siphon DHS reactor volume was modified (50:25:25 = aerobic: anoxic: anaerobic zones), and an influent bypass system (20% to the anoxic zone) was integrated to enhance simultaneous nitrification-denitrification. The siphon DHS and conventional DHS have been operated under similar conditions. The sludge sample analysis has been done using sludge which extract from three different heights of the reactors. Using the sludge samples the microbial community of the reactors has been identified and their effected on nutrient removal performances has been evaluated.