Journal
BIORESOURCE TECHNOLOGY
Volume 329, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.124925
Keywords
Partial nitrification (PN)-Anammox; Sulfur autotrophic denitrification (SADN); NH3
Funding
- Suzhou Science and Technology Plan Project-Minsheng Project [SS202025]
- Major Science and Technology Projects for water pollution control and treatment of China [2017ZX07205002]
- National & Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology [2019KF04]
- Jiangsu Undergraduate Innovation and Entrepreneurship Training Program [201810332042Y]
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This study demonstrated the feasibility of in-situ autotrophic removal of NH3 and H2S by coupling PN-Anammox and SADN processes, achieving removal efficiencies of 95% and 87.5% respectively. The biochemical treatment pond efficiently treated the scrubbing liquid, preventing nitrogenous compounds accumulation and converting them to N2 through the coupling system.
In this study, an integrated device with scrubbing and biochemical treatment functions was used, and partial nitrification (PN)-Anammox and sulfur autotrophic denitrification (SADN) processes were coupled in a biochemical treatment pond to explore the feasibility of in-situ autotrophic removal of NH3 and H2S. The results showed that the removal efficiency of NH3 and H2S in waste gas are 95% and 87.5% respectively. The scrubbing liquid was efficiently treated in the biochemical treatment pond. Nitrogenous compounds weren?t accumulated in liquid and converted to N2 by SADN and PN-Anammox coupling system. S2- was mainly used by SADN process to reduce NO3- . The scrubbing liquid processed by the biochemical treatment pond was refluxed to the scrubber to achieve continuous absorption of NH3 and H2S. Microbial community and functional microbial analysis showed that the PN-Anammox and SADN processes were the main processes to achieve the conversion of pollutants in the scrubbing liquid.
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