Biological treatment of landfill leachate with the integration of partial nitrification, anaerobic ammonium oxidation and heterotrophic denitrification

Xu, Zhiwei; Zeng, Guangming; Yang, Zhen; Xiao, Yong; Cao, Mengyu; Sun, Hongwei; Ji, Lili; Chen, Ying

doi:10.1016/j.biortech.2009.07.082

Cited by 120 publications

(46 citation statements)

References 22 publications

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“…COD was a control parameter for process selection between anammox and denitrification. Xu et al (2010) found that anammox was not suitable for wastewater with a COD/NH 4 + -N ratio > 1, because the autotrophic anammox bacteria were no longer able to outperform the heterotrophic denitrifying bacteria. In this work, anammox was greatly suppressed only at COD > 200 mg/L (COD/NH 4 + -N = 2.5).…”

Section: Performance Of the Sad Processmentioning

confidence: 99%

Performance and microbial community of simultaneous anammox and denitrification (SAD) process in a sequencing batch reactor

Qiang

et al. 2016

Bioresource Technology

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h i g h l i g h t sSimultaneous nitrogen and carbon removal was achieved in the SAD process. Contributions of anammox and denitrification to nitrogen removal were determined. Anammox and denitrifying bacteria dominated at low and high CODs, respectively. Brocadia sinica could grow with organic matter and tolerate high NO 3 À concentrations.a r t i c l e i n f o exhibited good diversity and abundance, but the diversity of anammox bacteria was less abundant. Brocadia sinica was able to grow in the presence of organic matter and tolerate high nitrite concentration. Anammox bacteria were predominant at low COD contents, while denitrifying bacteria dominated the microbial community at high COD contents. Anammox and denitrifying bacteria could coexist in one reactor to achieve the simultaneous carbon and nitrogen removal through the synergy of anammox and denitrification.

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Section: Performance Of the Sad Processmentioning

confidence: 99%

Performance and microbial community of simultaneous anammox and denitrification (SAD) process in a sequencing batch reactor

Qiang

et al. 2016

Bioresource Technology

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“…Landfill leachate may contain a high concentration of organic matter such as volatile fatty acids, humic and fulvic compounds; inorganic contaminants such as ammonium, sulphate and chloride; heavy metals and xenobiotic organic substances (Wang et al 2010;Xu et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Denitrification of a landfill leachate with high nitrate concentration in an anoxic rotating biological contactor

et al. 2010

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The denitrification performance of a lab-scale anoxic rotating biological contactor (RBC) using landfill leachate with high nitrate concentration was evaluated. Under a carbon to nitrogen ratio (C/N) of 2, the reactor achieved N-NO(3)(-) removal efficiencies above 95% for concentrations up to 100 mg N-NO(3)(-) l(-1). The highest observed denitrification rate was 55 mg N-NO(3)(-) l(-1) h(-1) (15 g N-NO(3)(-) m(-2) d(-1)) at a nitrate concentration of 560 mg N-NO(3)(-) l(-1). Although the reactor has revealed a very good performance in terms of denitrification, effluent chemical oxygen demand (COD) concentrations were still high for direct discharge. The results obtained in a subsequent experiment at constant nitrate concentration (220 mg N-NO(3)(-) l(-1)) and lower C/N ratios (1.2 and 1.5) evidenced that the organic matter present in the leachate was non-biodegradable. A phosphorus concentration of 10 mg P-PO(4)(3-) l(-1) promoted autotrophic denitrification, revealing the importance of phosphorus concentration on biological denitrification processes.

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“…Moreover, the risk of obtaining a concentrated leachate depends on a number of factors that control its quantity and quality, such as water percolation through the wastes, biochemical processes in wastes' cell and the degree of wastes compaction (Abbas et al 2009;Li et al 2010;Xu et al 2010). Typically, leachate parameters vary depending on the age of the landfill.…”

Section: Landfill Leachate Compositionmentioning

confidence: 99%

Sustainable treatment of landfill leachate

et al. 2014

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Biological treatment of landfill leachate with the integration of partial nitrification, anaerobic ammonium oxidation and heterotrophic denitrification

Cited by 120 publications

References 22 publications

Performance and microbial community of simultaneous anammox and denitrification (SAD) process in a sequencing batch reactor

Performance and microbial community of simultaneous anammox and denitrification (SAD) process in a sequencing batch reactor

Denitrification of a landfill leachate with high nitrate concentration in an anoxic rotating biological contactor

Sustainable treatment of landfill leachate

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