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Application of combined process of partial nitritation - anammox using a rotating biological contactor (PARBC) to treat ammonium-rich wastewater

ombining the partial Nitritation and Anammox using a rotating biological contactor (PARBC) to remove the ammonium in wastewater was evaluated in this study. The accumulation of Anammox bacteria on the carrier easily obtained after 5 days operating of sequence batch with synthetic wastewater. | TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 19, SOÁ M2- 2016 Application of combined process of partial nitritation - anammox using a rotating biological contactor (PARBC) to treat ammonium-rich wastewater. Nguyen Nhu Hien1, Truong Thi Thanh Van2, Le Thanh Son, Phan The Nhat2, Nguyen Phuoc Dan2. 1 Institute for Environment and Resources, Ho Chi Minh City University of Technology, Viet Nam 2 Faculty of Environment and Natural resource, Ho Chi Minh City University of Technology, Viet Nam (Received 15 September 2016, accepted 20 November 2016) ABSTRACT Combining the partial Nitritation and Anammox activity (SAA) of biofilm and Anammox using a rotating biological contactor suspended sludge in the tank is determined to be (PARBC) to remove the ammonium in 0.298 gN-N2/gVSS/day and 0.0041 gNwastewater was evaluated in this study. The N2/gVSS/day, respectively. Moreover, the accumulation of Anammox bacteria on the suspended sludge concentration is 17.765 mg carrier easily obtained after 5 days operating of MLSS/L. This result showed that Anammox sequence batch with synthetic wastewater. Then bacteria adapt and grow on the rotating AOB biomass cultivated in PARBC to complete biological carrier; otherwise Anammox bacteria the process of combining two bacteria in the hardly develop in the form of suspended sludge same reactor for completely autotrophic in the tank. This study shows that the PARBCR nitrogen removal. After 60 batches of the has great potential to effectively removing operation, highest nitrogen removal rate ammonium from wastewater with the short reached 0.33 kg N/m3.d with nitrogen removal startup time. efficiency is 90% at a concentration of ammonium input of 250 mg N/L. The specific Keywords: Partial nitritation, Anammox, PARBC, ammonium- rich wastwater 1. INTRODUCTION The CANON (Complete Autotrophic Nitrogen Removal Over Nitrite) process is the combination of partial nitritation and anammox in one reactor [1]. This process can be used to remove a high load of .