title: Inhibitory effect of high-strength ammonia nitrogen on bio-treatment of landfill leachate using EGSB reactor under mesophilic and atmospheric conditions.
abstract: The inhibitory effect of high-strength NH(3)-N on anaerobic biodegradation of landfill leachates in an EGSB bioreactor has been investigated. The research compared start-up performance of the reactor treating the landfill leachate with NH(3)-N in 242-1200 mg/l to that treating the compost leachate with NH(3)-N in 38-410 mg/l. The observations showed that the performance of the reactor treating the landfill leachate was only marginally worse than that treating the compost leachate at the mesophilic temperature when NH(3)-N concentration was under 1500 mg/l. We also noted that NH(3)-N at the concentration of 1500-3000 mg/l inhibited the biodegradation. The comparative biodegradation performance at the mesophilic and atmospheric temperature demonstrated that the maximal OLR of atmospheric digestion was only reduced to 44 kg COD/m(3)d. These findings indicate that landfill leachates with NH(3)-N less than 1500 mg/l could be efficiently treated in the EGSB bioreactor even under the atmospheric condition with methane generated.
authors.affiliation: School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, PR China.
authors.forename: Jianyong
authors.initials: J
authors.lastname: Liu
authors.forename: Jinghuan
authors.initials: J
authors.lastname: Luo
authors.forename: Jizhi
authors.initials: J
authors.lastname: Zhou
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liu
authors.forename: Guangren
authors.initials: G
authors.lastname: Qian
authors.forename: Zhi Ping
authors.initials: ZP
authors.lastname: Xu
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D001272:Atmosphere; D001673:Biodegradation, Environmental; D019149:Bioreactors; D009584:Nitrogen / Q000378:metabolism*; D012037:Refuse Disposal
chemical_list: D000641:Ammonia; D009584:Nitrogen