Stability of algal-bacterial granules in continuous-flow reactors to treat varying strength domestic wastewater.Stability of algal-bacterial granules was investigated in two continuous-flow systems to treat synthetic domestic wastewater using single (R1) and series (R2=R2-1+R2-2 with automatically internal recirculation) reactors by seeding 50% (w/w) algal-bacterial granules.  When double increased strength influent fed to R1, R1 achieved better denitrification with TN removal increased from 29% to 80%, possibly due to the increased influent organics concentration favored the denitrification process.  Most importantly, the two systems well maintained their granular stability, and all granules became algal-bacterial ones with very little change detected in algae content in granules after 120days' operation. 
R1
Stability of algal-bacterial granules in continuous-flow reactors to treat varying strength domestic wastewater.Stability of algal-bacterial granules was investigated in two continuous-flow systems to treat synthetic domestic wastewater using single (R1) and series (R2=R2-1+R2-2 with automatically internal recirculation) reactors by seeding 50% (w/w) algal-bacterial granules.  However, R2 exhibited superior performance on total nitrogen (TN) removal (76%). 
R2
Stability of algal-bacterial granules in continuous-flow reactors to treat varying strength domestic wastewater.Stability of algal-bacterial granules was investigated in two continuous-flow systems to treat synthetic domestic wastewater using single (R1) and series (R2=R2-1+R2-2 with automatically internal recirculation) reactors by seeding 50% (w/w) algal-bacterial granules. 
R2-1
Stability of algal-bacterial granules in continuous-flow reactors to treat varying strength domestic wastewater.Stability of algal-bacterial granules was investigated in two continuous-flow systems to treat synthetic domestic wastewater using single (R1) and series (R2=R2-1+R2-2 with automatically internal recirculation) reactors by seeding 50% (w/w) algal-bacterial granules. 
R2-2