Performance of a haloalkaliphilic bioreactor under different NO3-/SO42- ratios
Performance of a haloalkaliphilic bioreactor under different NO3-/SO42- ratios
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不同 NO3-/SO42- 比例下卤碱生物反应器的性能
DOI：
10.1016/j.biortech.2013.12.009
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发表时间：
2014
影响因子：
11.4
通讯作者：
Xing Jian-Min
中科院分区：
文献类型：
--
作者：
Zhou Jie-Min;Song Zi-Yu;Yan Dao-Jiang;Liu Yi-Lan;Yang Mao-Hua;Cao Hong-Bin;Xing Jian-Min
摘要在模拟实验中，研究了NO3-/SO 42-比对生物反应器反硝化和硫酸盐去除效果的影响。在NO3-/SO 42-比值为17.6 ~ 1.0范围内，两种底物的还原性能均较好. 5.当NO3-/SO 42-比为3.0时，硝酸盐和硫酸盐的去除率分别为6和1.39 kg m− 3 d− 1，而硫化物浓度高达703 g m− 3。主要的硫酸盐还原菌和硫酸盐还原菌分别为脱硫弧菌和野油菜盐单胞菌。NO3-/SO 42-比值的降低导致细菌群落发生明显变化。PCR扩增的16 SrDNA片段分析表明，虽然硫酸盐还原菌成为优势菌，但硫酸盐还原菌的数量也有所增加，说明硫酸盐还原菌和硫酸盐还原菌在反应器中共存良好。
Abstract Effects of NO 3-/SO 4 2-ratio on denitrification and sulfate removal efficiency were investigated in model experiments applying haloalkaliphilic bioreactor. The reduction of both substrates performed well at different NO 3-/SO 4 2-ratios ranging from 17.6 to l. 5. The removal rates of nitrate and sulfate were 6 and 1.39 kg m− 3 d− 1, respectively, at NO 3-/SO 4 2-ratio 3.0, while sulfide concentration reached up to 703 g m− 3. The major sulfate-reducing and denitrifying bacteria were Desulfonatronovibrio sp. and Halomonas campisalis, respectively. Decrease in NO 3-/SO 4 2-ratio led to obvious changes in bacterial community. Although the sulfate reducers became dominant, the population of denitrifying ones also increased as it was demonstrated by analysis of PCR-amplified 16S rDNA fragments, which suggested that SRB and DB coexisted well in bioreactor.