Journal
BIORESOURCE TECHNOLOGY
Volume 214, Issue -, Pages 514-519Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.04.118
Keywords
Landfill leachate; Continuous flow; Nitritation; Anammox; Nitrogen removal
Funding
- Project Natural Science Foundation of China [51478013]
- Beijing Municipal Commission of Education
Ask authors/readers for more resources
Due to the difficulty in removing nitrogen from landfill leachate, a combined continuous-flow process of nitritation and anammox was applied to process mature leachate. The transformation rate of ammonia and nitrite accumulation ratio in A/O reactor were kept above 95% and 92% respectively through associated inhibition of free ammonia (FA) and free nitrous acid (FNA) to NOB. The total nitrogen volumetric load of anammox in an UASB reactor was brought up from 0.5 kg/(m(3).d) to 1.2 kg/(m(3).d) by gradually increasing influent substrate concentration and reducing hydraulic retention time (HRT). The results show that COD from mature leachate did not bring obvious inhibition effects to anammox. Under concentrations of influent ammonia and COD which were respectively 1330 mg/L and 2250 mg/L, the removal efficiencies of TN and COD reached 94% and 62% respectively. In the quantitative PCR reactions, the proportions occupied by AOB, NOB and anammox in A/O were 11.39%, 1.76% and 0.05% respectively; and proportions of those in UASB were 0.35%, 4.01% and 7.78% respectively. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available