UASB reaktörde anammox prosesi ile nutrient giderimi

Anaerobic ammonia oxidation (ANAMMOX) is a novel process in which is a newpowerful tool especially for remove the strong nitrogenous wastewaters. In this study, theanaerobic ammonia removal efficiencies was investigated in an UASB RECTOR andammonia and COD removal kinetics was researched at six different hydraulic retention times(HRT). The COD concentrations were adjusted between 300 and 1000 mg/L and HRTs weredecreased from 4,4 to 0,73 days by adjusting the up-flow rates from 0,5 to 3 l/d. Thoughtcontinuous operation of anammox -UASB reactor using synthetic wastewater for 294 days.Ammonium, nitrit, nitrat and chemical oxygen demand (COD), removal efficiencies, total,nitrogen gas, hydrogen sulfide gas, metan gas productions and methane percentage ratioswere investigated in UASB reactor at different Ammonium, nitrit, nitrat and chemical oxygendemand (COD) concentration, and decreasing HRTs. The maximum ammonium removalefficiency was found as 55 % when the influent nitrit, nitrat and chemical oxygen demand(COD)concentrations were 600 mg/l 131 mg/L, 0,1 mg/L, respectively in run 1 at a HRT of4,4 days. The maximum nitrit removal efficiency was 100 % when the influent COD/NH4-N/NO3-N/NO2-N ratios were between 20/2/2.6/1 and 15/1.25/1/2.5 in runs 3,4 and 5 atHRTs of 2, 1,1 and 0,73 days. The maximum COD removal efficiency was obtained as %90when the COD/NH4-N/NO3-N ratios were 6:1:1,3 in runs 1 and 2 at a HRT of 4.4 days.The maximum nitrogen gas production was found as 130,4 l/day, in continuous operation ofthe UASB reactor indicating the anaerobic ammonia removal process (anammox process)occurred. The kinetic studies performed in the UASB reactor showed that Stover Kin-cannonand Grau kinetic models were meaningful for ammonia and COD removal in the UASBrector.