title: Piggery wastewater treatment using Alcaligenes faecalis strain No. 4 with heterotrophic nitrification and aerobic denitrification.
abstract: Alcaligenes faecalis strain No. 4, which has heterotrophic nitrification and aerobic denitrification abilities, was used to treat actual piggery wastewater containing high-strength ammonium under aerobic conditions. In a continuous experiment using a solids-free wastewater (SFW) mixed with feces, almost all of the 2000 NH4+ -N mg/L and 12,000 COD mg/L in the wastewater was removed and the ammonium removal rate was approximately 30 mg-N/L/h, which was 5-10 times higher than the rates achieved by other bacteria with the same abilities. The denitrification ratio was more than 65% of removed NH4+ -N, indicating that strain No. 4 exhibited its heterotrophic nitrification and aerobic denitrification abilities in the piggery wastewater.
authors.affiliation: Chemical Resources Laboratory, Tokyo Institute of Technology, 4259, Nagatsuta, Midori-ku, Yokohama, 226 8503, Japan.
authors.forename: Hung-Soo
authors.initials: HS
authors.lastname: Joo
authors.affiliation: Chemical Resources Laboratory, Tokyo Institute of Technology, 4259, Nagatsuta, Midori-ku, Yokohama, 226 8503, Japan.
authors.forename: Mitsuyo
authors.initials: M
authors.lastname: Hirai
authors.affiliation: Chemical Resources Laboratory, Tokyo Institute of Technology, 4259, Nagatsuta, Midori-ku, Yokohama, 226 8503, Japan. Electronic address: mshoda@res.titech.ac.jp.
authors.forename: Makoto
authors.initials: M
authors.lastname: Shoda
mesh_terms: D000332:Aerobiosis; D042481:Alcaligenes faecalis / Q000378:metabolism*; D000641:Ammonia / Q000378:metabolism; D000818:Animals; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology; D052836:Heterotrophic Processes / Q000502:physiology*; D007220:Industrial Waste / Q000032:analysis; D009584:Nitrogen / Q000378:metabolism*; D013045:Species Specificity; D013552:Swine; D014865:Waste Disposal, Fluid / Q000379:methods; D014871:Water Microbiology; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
chemical_list: D007220:Industrial Waste; D000641:Ammonia; D009584:Nitrogen