期刊
BIORESOURCE TECHNOLOGY
卷 232, 期 -, 页码 408-411出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.01.073
关键词
Photosynthetic bacteria; Aging biogas slurry; Denitrification; Process factor
资金
- Beijing Municipal Science & Technology Commission [Z151100001415005]
Huge amount of aging biogas slurry is in urgent need to be treated properly. However, due to high NH3-N concentration and low C/N ratio, this aging biogas slurry is refractory for traditional methods. Its denitrification has become a big challenge. In this paper, photosynthetic bacteria (PSB) were employed to handle this problem. The results showed denitrification of aging biogas slurry by PSB treatment was promising. The highest removal efficiency of NH3-N reached 99.75%, much higher than all other treatments. The removal of NH3-N followed pseudo zero order reaction under dark-aerobic condition. The better inoculation rate for NH3-N removal was 30%; and aerobic condition was more beneficial for NH3-N removal than anaerobic condition because of different metabolic pathways. (C) 2017 Elsevier Ltd. All rights reserved.
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