Authors : Yenny Silvia and Setyo Sarwanto Moersidik
Abstract: Sponge-bed trickling filter is a recirculating aquaculture systems technology that capable of managing Total Ammonia Nitrogen (TAN) in water until it reaches its safe threshold for fish. The study was conducted on a laboratory scale using a 13×13×28 cm3 sponge media trickling filter. The trickling filter height and flowrate were 40 cm and 3 L/min, respectively. The influent used was synthetic wastewater with water quality similar to Osphronemus goramy Lac. Aquaculture with an average weight of 0.013 g derived from the addition of ammonia solution with load variations of 0.4, 0.6 and 0.8 mg TAN/L. During seven repetitions of observations at each load, the results showed that the loading of 0.8 mg TAN/L resulted in a relatively high removal efficiency and a stable Volumetric TAN Removal (VTR) of 96.41±0.880% and 0.0157±0.00105 g/m3 day. The nitrification reaction took place on first order kinetics with the highest rate of removal occurring at 0.8 mg TAN/L load of 0.67 g/m2 day. First-order kinetics is not an optimum condition for sponge-bed trickling filter operations but the 0.8 mg TAN/L load selection minimizes the impact of first-order kinetics as it results in relatively stable percentages and VTRs.
Yenny Silvia and Setyo Sarwanto Moersidik, 2019. Total Ammonia Nitrogen (TAN) Removal Efficiency in Recirculating Aquaculture Systems by using Sponge-Bed Trickling Filter. Journal of Engineering and Applied Sciences, 14: 8490-8495.