嗜盐单胞菌存在下高盐废水的反硝化硫化物去除工艺
Denitrifying sulfide removal process on high-salinity wastewaters in the presence of Halomonas sp.
作者信息
Liu Chunshuang, Zhao Dongfeng, Ma Wenjuan, Guo Yadong, Wang Aijie, Wang Qilin, Lee Duu-Jong
机构信息
College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
出版信息
Appl Microbiol Biotechnol. 2016 Feb;100(3):1421-1426. doi: 10.1007/s00253-015-7039-6. Epub 2015 Oct 10.
Biological conversion of sulfide, acetate, and nitrate to, respectively, elemental sulfur (S(0)), carbon dioxide, and nitrogen-containing gas (such as N2) 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.
在膨胀颗粒污泥床（EGSB）反应器中，实现了在氯化钠浓度为35 - 70克/升的条件下，分别将硫化物、乙酸盐和硝酸盐生物转化为元素硫（S(0)）、二氧化碳和含氮气体（如N2）。发现碳氮比为1:1时，在高盐度下可实现高硫化物去除率和S(0)转化率。细胞外聚合物（EPS）的量随氯化钠浓度增加，在70毫克/升氯化钠时为11.4毫克/克挥发性悬浮固体。反硝化硫化物去除（DSR）菌群在高盐度条件下包含陶厄氏菌属和嗜盐单胞菌属作为异养菌，以及偶氮弧菌属作为自养菌。嗜盐单胞菌属与高盐度下增强的DSR性能相关。
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