APPLICATION OF NITROSOMONAS AND ANAMMOX COMBINATION IN A REACTOR FOR AMMONIUM REMOVAL IN SWINE WASTEWATER

Dang Van Dien

Abstract


This study investigated the combination of two kinds of autotrophic bacteria, named Anammox and Nitrosomonas in a reactor to remove ammonium existed in swine wastewater. The reactor which was operated with swine wastewater taken from Dong A pig breeding enterprise (Di An, Binh Duong) had 15 liters volume. The biomass carrier used in this model was made from the synthetic acrylic with attached capacity of 0.5-0.6g-SS/g-material. The sludge was taken from a reactor using partial nitritation/Anammox processes of a previous study at Vietnam Academy of Science and Technology. In 118 days of operation, average influent ammonium was 350mg/l, feeding to three loading rates (LR) 0.47, 0.70, 0.93 kg N-NH4+/m3/day with flow rate 20, 30, 40 liters, respectively. The highest efficiency was found at the first loading rate 0.47 kg N-NH4+/m3/day with 91.55 %. The other loading rates 0.70 and 0.93 kg N-NH4+/m3/day gave lower efficiency, 78.08 and 70.5 %, respectively. VSS at the beginning and the end of the operation were 4g/l and 9.4 g/l, respectively. The optimum pH for the reactor was in range of 7.8 - 8.0.


Keywords


anammox, ammonium, nitrosomonas, swine wastewater.

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DOI: https://doi.org/10.15625/2525-2518/55/4C/12162 Display counter: Abstract : 156 views. PDF : 107 views.

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Published by Vietnam Academy of Science and Technology