Inhibitory effect of high-strength ammonia nitrogen on bio-treatment of landfill leachate using EGSB reactor under mesophilic and atmospheric conditions

被引:64
作者
Liu, Jianyong [1 ]
Luo, Jinghuan [1 ]
Zhou, Jizhi [1 ]
Liu, Qiang [1 ]
Qian, Guangren [1 ]
Xu, Zhi Ping [2 ]
机构
[1] Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
[2] Univ Queensland, Australian Inst Bioengn & Nanotechnol, ARC Ctr Excellence Funct Nanomat, Brisbane, Qld 4072, Australia
关键词
EGSB reactor; Landfill leachate; Biodegradation; Ammonia nitrogen; ANAEROBIC TREATMENT; SEQUENCING BATCH; PERFORMANCES;
D O I
10.1016/j.biortech.2011.11.114
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The inhibitory effect of high-strength NH3-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 NH3-N in 242-1200 mg/l to that treating the compost leachate with NH3-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 NH3-N concentration was under 1500 mg/l. We also noted that NH3-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 NH3-N less than 1500 mg/l could be efficiently treated in the EGSB bioreactor even under the atmospheric condition with methane generated. (C) 2011 Published by Elsevier Ltd.
引用
收藏
页码:239 / 243
页数:5
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