期刊
BIORESOURCE TECHNOLOGY
卷 134, 期 -, 页码 212-218出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.02.017
关键词
Landfill leachate; ASBR; SBR; Nitrogen removal; Endogenous denitritation
资金
- NSFC [51178007]
- scientific research base and scientific innovation platform of Beijing municipal education commission
In order to achieve advanced nitrogen removal from landfill leachate without the addition of external carbon sources, a novel system coupling an anaerobic sequencing batch reactor (ASBR) and sequencing batch reactor (SBR) was proposed for the treatment of real landfill leachate with NH4+-N and chemical oxygen demand (COD) concentrations of 1100 mg/L and 6000 mg/L, respectively. ASBR could remove 80% of the influent COD under a volumetric loading rate of 5 kg COD/(m(3) d). Denitritation and simultaneous nitritation-denitritation were responsible for 50% of the TN removal in SBR under alternate anoxic/aerobic modes. Furthermore, advanced nitrogen removal was realized with a total inorganic nitrogen (TIN) removal efficiency of 99% at the expense of endogenous denitritation during a 26 h period, which led to effluent COD and TN values of 550-650 mg/L and 15-25 mgN/L, respectively. For the combined system, removal efficiencies of COD and total nitrogen (TN) were above 90% and 95%, respectively. (C) 2013 Elsevier Ltd. All rights reserved.
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