| 高雅,黄显怀,李卫华,李婉,叶翠红.无有机碳源条件下Fe2+对硝化反硝化过程的影响[J].安徽建筑大学学报,2017,25(3):36-40 |
| 无有机碳源条件下Fe2+对硝化反硝化过程的影响 |
| The Impact of Fe2+ on Nitrification and Denitrification Without Organic Carbon Source |
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| DOI：10.11921/j.issn.2095-8382.20170308 |
| 中文关键词: 硝化反硝化 二价铁 SBR Zeta |
| 英文关键词: nitrification and denitrification ferrous SBR Zeta |
| 基金项目:国家自然科学基金课题（51578002） |
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| 中文摘要: |
| 采用SBR反应器，接种被驯化的好氧颗粒污泥，研究无有机碳源的条件下Fe2+对硝化反硝化过程的影响。实验所用Fe2+的浓度范围是0.002～1mg·L-1。结果表明，Fe2+对硝化反硝化过程和好氧污泥的颗粒化有一定的影响。当进水Fe2+浓度设置为0.002 mg·L-1、0.5 mg·L-1、1 mg·L-1时，氨氮转化率分别为98.4%、99%、99.2%，Fe2+对氨氮的降解有些许促进作用。然而，Fe2+有利于亚硝酸盐氮和硝酸盐氮的生成，但对总氮影响甚微。Fe2+的加入使得好氧活性污泥的Zeta电位变小，且进出水电位差变大，平均粒径变大，对好氧活性污泥的颗粒化有促进作用。 |
| 英文摘要: |
| Effects of Fe2+ on the process of nitrification and denitrification without organic carbon source were investigated in a SBR reactor by using aerobic granular sludge which had been domesticated by the laboratory to inoculated. The concentrations of Fe2+ was 0.002~1mg·L-1 in the experiment. Results show that Fe2+ has certain influence on process of nitrification-denitrification and aerobic granulation. When the concentrations of Fe2+ were set to 0.002mg·L-1, 0.5mg·L-1 and 1mg·L-1, respectively, the ammonia nitrogen removal rate were 98.4%、99%、99.2%. Fe2+ has a little influence on the degradation of ammonia nitrogen. Besides, Fe2+ is conducive to the generation of nitrite nitrogen and nitrate nitrogen, but with no significant influence of total nitrogen. After adding Fe2+, Zeta potential of effluent became smaller while the potential difference of influent and effluent increased and average grain diameter increased. Fe2+ can improve the aerobic sludge granulation. |
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