Journal
JOURNAL OF CLEANER PRODUCTION
Volume 284, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2020.124708
Keywords
Ammonia; Biotrickling filter; Compost deodorization; Hydrogen sulphide; Microbial community
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Funding
- National Key Research and Development Program of China [2017YFD0800803-02]
- Major Research and Development Projects of Sichuan Province [2019YFS0052]
- Major Research and Development program of Shanxi Province [201903D211013]
- Major Science and Technology Projects of Sichuan Province [2018SZDZX0024]
- Biological Resources Program,Chinese Academy of Sciences [KFJ-BRP-009]
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The study demonstrates that a BTF reactor packed with polyhedral spheres can effectively remove H2S and NH3, with EBRT being a key parameter affecting the removal efficiency.
With polyhedral spheres as the packing, a semi-pilot biological trickling filter reactor (BTF) inoculated by domesticated activated sludge is used to remove Hydrogen Sulphide (H2S) and Ammonia (NH3). The removal rate of H2S and NH3 by BTF was as high as 98.25% and 88.55%, and the maximum removal load was 84.57 g H2S m(-3) h(-1) and 38.77 g NH3 m(-3) h(-1) during the 61-day process. The inlet gas concentration ranges from 0 to 500 ppm, and the empty bed residence time (EBRT) is 31.8 s. When the EBRT reduced from 31.8s to 25.4s, the removal rate of H2S and NH3 decreased significantly, which was 67.21% and 81.36%, respectively. The results showed that EBRT significantly affected the removal rate of H2S and NH3 Microbial analysis indicated that Dokdonella, Ferruginibacter, Nitrosomonas, and Thiobacillus had high abundance at the genus level, showing that these genera play an important role in the degradation of H2S and NH3. When the optimized parameters applied to the on-site biogas residue compost, the removal rate of H2S and NH3 by BTF can reach 91.34%, which provides a feasible process for the deodorization project with compost. (C) 2020 Elsevier Ltd. All rights reserved.
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