ZHANG Fangzhai, WANG Shuying, PENG Yongzhen, et al. Start-up and characterization of nitrogen and COD removal from mature landfill leachate via CANON process[J]. CIESC Journal, 2016, (9): 3910-3918.
ZHANG Fangzhai, WANG Shuying, PENG Yongzhen, et al. Start-up and characterization of nitrogen and COD removal from mature landfill leachate via CANON process[J]. CIESC Journal, 2016, (9): 3910-3918.DOI: 10.11949/j.issn.0438-1157.20160144.
The mature landfill leachate from sanitary landfill is difficult to treat because of complicated composition
high concentration of ammonia and low C/N. During this study
a CANON (completely autotrophic nitrogen removal over nitrite) process with an intermittent aeration/anaerobic mixing operational mode was applied to remove nitrogen from mature landfill leachate. After domestication of 130 d
the system was stable with the effluent COD
NH4--N and TN (mg·L-1) of 407±14
8±4 and 19±4 when the influent COD
NH4--N and TN (mg·L-1) were 2050±250
1625±75 and 2005±352
respectively. Nitrogen removal from mature landfill leachate could be realized via intermittent aeration/anaerobic mixing CANON process with 98.76% of total nitrogen removal efficiency. Besides
the FISH (Fluorescence in situ hybridization) results showed that under this operational mode
both aerobic ammonium oxidation bacteria and anaerobic ammonium oxidizing bacteria accounted for 19.5%±1.3% and 42.7%±5.02%
respectively
which provided a reference for CANON treating mature landfill leachate in engineering application.