Performance and Microbial Community of Simultaneous Denitrification and Biomineralization in Bioreactors

The effects of combined different strains on a simultaneous denitrification and biomineralization process were examined. The influence of sodium succinate concentration, pH, and hydraulic retention time on nitrate and hardness removal was evaluated in bioreactors. Experimental results indicated that...

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Bibliographic Details
Published in:Chemical engineering & technology 2019-03, Vol.42 (3), p.637-644
Main Authors: Su, Junfeng, Bai, Yihan, Huang, Tinglin, Gao, Yichou, Wei, Li, Lu, Jinsuo
Format: Article
Language:English
Subjects:
Biofilm reactor
Biomineralization
Bioreactors
Calcium ions
Communities
Community diversity
Denitrification
Hardness
Hydraulic retention time
Microorganisms
Pseudomonas
Pseudomonas sp
Scanning electron microscopy
Sedimentation
X-ray diffraction
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Summary:The effects of combined different strains on a simultaneous denitrification and biomineralization process were examined. The influence of sodium succinate concentration, pH, and hydraulic retention time on nitrate and hardness removal was evaluated in bioreactors. Experimental results indicated that high nitrate and hardness removal efficiencies were obtained under optimum conditions. The community diversity was markedly influenced by the concentration of sodium succinate. The findings proved that Pseudomonas sp. H117 and Pseudomonas sp. H2 played a key role in the process of nitrate and hardness removal. The main component of sedimentation generated from the bioreactor was detected as calcium ion precipitation by scanning electron microscopy and X‐ray diffraction. An innovative biotechnological process of simultaneous denitrification and biomineralization in a bioreactor was developed by combining mixed bacteria with ceramsite. The influence of sodium succinate concentration, pH, and hydraulic retention time on nitrate and hardness removal was evaluated. The community diversity was significantly influenced by the concentration of sodium succinate.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201800310