期刊
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
卷 100, 期 3, 页码 1421-1426出版社
SPRINGER
DOI: 10.1007/s00253-015-7039-6
关键词
Denitrifying sulfide removal; High salinity; EGSB; Elemental sulfur
资金
- National Natural Science Foundation of China [21307160]
- Natural Science Foundation of Shandong Province [ZR2013EEQ030]
Biological conversion of sulfide, acetate, and nitrate to, respectively, elemental sulfur (S-0), carbon dioxide, and nitrogen-containing gas (such as N-2) at NaCl concentration of 35-70 g/L was achieved in an expanded granular sludge bed (EGSB) reactor. A C/N ratio of 1: 1 was noted to achieve high sulfide removal and S-0 conversion rate at high salinity. The extracellular polymeric substance (EPS) quantities were increased with NaCl concentration, being 11.4-mg/g volatile-suspended solids at 70 mg/L NaCl. The denitrifying sulfide removal (DSR) consortium incorporated Thauera sp. and Halomonas sp. as the heterotrophs and Azoarcus sp. being the autotrophs at high salinity condition. Halomonas sp. correlates with the enhanced DSR performance at high salinity.
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