SULFATE- REDUCING AND NITRITE-DEPENDENT ANAMMOX FOR AMMONIUM REMOVAL

摘要

Wastewaters originating from domestic, industrial and agricultural sources have high NH4+ (up to 2000 mg N/L) and low organic carbon content. Treatment of these flows has high costs on external carbon source, aeration and utilization of excess sludgewhen nitrification-denitrification methods are applied. The nitrite-dependent anaerobic ammonium oxidation (Anammox) process has been proven to be feasible for biological nitrogen removal from nitrogen-rich waste streams (Strous et al., 1999).Although there is no genome information available on the ability of Anammox bacteria to consume SO_4~(2-) as electron acceptor, SO_4~(2-) reduction by Anammox bacteria has been experimentally observed (Fdz.-Polanco et al. 2001). A Planctomycetes bacterium Anammoxoglobus sulfate, capable of oxidizing NH4~+ into NCV using SO_4~(2-) as an electron acceptor, was isolated by (Liu et al., 2008). Fdz.-Polanco et al. (2001) proposed a summary equation