globalchange  > 气候变化事实与影响
DOI: 10.1016/j.watres.2019.02.041
Scopus记录号: 2-s2.0-85062454703
论文题名:
Successful operation performance and syntrophic micro-granule in partial nitritation and anammox reactor treating low-strength ammonia wastewater
作者: Chen R.; Ji J.; Chen Y.; Takemura Y.; Liu Y.; Kubota K.; Ma H.; Li Y.-Y.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 155
起始页码: 288
结束页码: 299
语种: 英语
英文关键词: Anammox ; AOB ; HRT 2h ; Low-strength ; Micro-granule ; Partial nitritation
英文摘要: The stable operation of the partial nitritation and anammox (PN/A) process is a challenge in the treatment of low-strength ammonia wastewater like sewage mainstream. This study demonstrated the feasibility of achieving stable operation in the treatment of 50 mg/L ammonia wastewater with a micro granule-based PN/A reactor. The long-term operation results showed nitrogen removal efficiencies of 71.8 ± 9.9% were stably obtained under a relatively short hydraulic retention time (HRT) of 2 h. The analysis on the physicochemical properties of the granules indicated most of the granules were in a size in a range of 265–536 μm, and the elementary composition of the granules was determined to be CH 1.61 O 0.61 N 0.17 S 0.01 P 0.03 . The microbial analysis revealed Candidatus Kuenenia stuttgartiensis anammox bacteria and Nitrosomonas-like AOB were the two most dominant bacteria with 27.6% and 10.5% abundance, respectively, both of which formed spatially syntrophic co-immobilization within the micro-granules. The ex-situ activity tests showed the activity of NOB was well limited through DO regulation in the reactor. These results provide an alternative PN/A process configuration for low-strength wastewater treatment by sustaining microstate granules. Optimization of the nitrogen sludge loading rate and DO regulation are important for the successful performance. © 2019 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121895
Appears in Collections:气候变化事实与影响

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作者单位: International S&T Cooperation Center for Urban Alternative Water Resources Development, Key Lab of Environmental Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an, Shaanxi Province 710055, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan; Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan

Recommended Citation:
Chen R.,Ji J.,Chen Y.,et al. Successful operation performance and syntrophic micro-granule in partial nitritation and anammox reactor treating low-strength ammonia wastewater[J]. Water Research,2019-01-01,155
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