Nitrogen removal from piggery waste using the combined SHARON and ANAMMOX process

Abstract

Nitrogen removal in piggery waste was investigated with the combined SHARON-ANAMMOX process. The piggery waste was characterized as strong nitrogenous wastewater with very low C/N ratio. For the preceding SHARON reactor, ammonium nitrogen loading and conversion rates were 0.97 kg NH4-N/m3 reactor/day and 0.73 kg NH4-N/m3 reactor/day, respectively. Alkalinity consumption for ammonium conversion was 8.5 gr bicarbonate utilized per gram ammonium nitrogen converted to NO2-N or NO3-N at steady-states operation. The successive ANAMMOX reactor was fed with the effluent from SHARON reactor. Nitrogen loading and conversion rates were 1.36 kg soluble N/m3 reactor/day and 0.72 kg soluble N/m3 reactor/day, respectively. The average NO2-N/NH4-N removal ratio by ANAMMOX reaction was 2.13. It has been observed that Candidatus "Kuenenia stuttgartiensis" were dominated in the ANAMMOX reactor based on FISH analysis.

The Effect of Influent Characteristics and Operational Conditions over the Performance and Microbial Community Structure of Partial Nitritation Reactors

“…Partial nitritation systems were developed by the Delft University of Technology in 1996-1999 [11] and have several advantages over total nitritation-based technologies, such as 25% savings in aeration, 30% reduction of biomass generation, with a biomass yield of about 0.15 g biomass (g NH 4 + -N) −1 [12], and 20% less CO 2 emission [11]. Partial nitritation bioreactors at the laboratory scale have been reported to successfully treat food processing and agriculture industry wastewater, reject wastewater and slaughterhouse wastewater or swine manure wastewater, among others [13][14][15][16][17][18][19]. Within a partial nitritation reactor, the main performance is the oxidation of ammonium to nitrite, and therefore, there is an accumulation of nitrite in the system.…”

Anaerobic ammonium oxidation for treatment of ammonium-rich wastewaters

“…and Kim, 2004). This was closely related to the relatively higher COD (chemical oxygen demand) of 600~25 700 mg/L (Ahn and Kim 2004;Hwang et al, 2005). The COD was 800~1 800 mg/L in sludge digest liquids (Hellinga et al, 1998;Ahn and Choi, 2006).…”

“…Additionally, wastewaters from anaerobic treatment of animal waste were also tested (Ahn and Kim, 2004;Hwang et al, 2005;Waki et al, 2007). These wastewaters are known for high organic nitrogen content.…”

Reject Brines from Desalination as Possible Sources for Environmental Technologies

“…New options for nitrogen removal are based on the so-called anammox, the combination of partial nitrification and anaerobic ammonium oxidation (Hwang et al, 2005), but they are still under development.…”