Conditioning the alternating aerobic-anoxic process to enhance the removal of inorganic nitrogen pollution from a municipal wastewater in France
Conditioning the alternating aerobic-anoxic process to enhance the removal of inorganic nitrogen pollution from a municipal wastewater in France
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DOI：
10.1016/j.jclepro.2015.03.043
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发表时间：
2015-08
影响因子：
11.1
通讯作者：
M. A. Fulazzaky;N. H. Abdullah;A. R. Yusoff;E. Paul
中科院分区：
文献类型：
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作者：
M. A. Fulazzaky;N. H. Abdullah;A. R. Yusoff;E. Paul
来自地表沃茨的无机氮污染会对人类健康和环境产生不利影响。硝化-反硝化耦合工艺可以显著去除城市污水中的无机氮污染物，但目前对单一反应器内的好氧-缺氧交替工艺的了解还很有限。本研究在单反应器生物流化床反应器中采用完全混合的交替好氧-缺氧扩展曝气处理工艺对法国某城市污水中的无机氮污染进行了典型的处理。对3 h好氧消化6 h缺氧和3 h好氧消化3 h缺氧两种交替好氧-缺氧工艺的硝化-反硝化耦合反应进行了对比分析。结果表明，缺氧时间的变化，具体地说，从6小时到3小时，可以增加交替好氧-缺氧工艺的性能约53.4%。平均出水无机氮浓度从10.3 mg N/L降至4.8 mg N/L，达到了出水无机氮浓度低于10 mg N/L的要求，以满足严格的出水标准。该研究提供了一种适当的处理方法，可用于帮助减少在单污泥反应器中处理的城市污水中的无机氮污染。这项研究的结果推进了对这种简单技术的理解，这种技术可以有效地去除城市污水中的无机氮污染。
Inorganic nitrogen pollution from surface waters can adversely affect human health and the environment. Coupled nitrification–denitrification can significantly remove the total inorganic nitrogen pollution amount from municipal wastewater; however, researchers only have a limited understanding of the alternating aerobic–anoxic process in a single reactor. This study performed a typical treatment using a completely mixed alternating aerobic–anoxic extended aeration treatment process in a single reactor, biological fluidised bed reactor to remove inorganic nitrogen pollution from a municipal wastewater in France. Comparative analysis of the coupled nitrification–denitrification reactions was carried out to investigate the two different alternating aerobic–anoxic processes of 3-h aerobic digestion and 6-h anoxic time and 3-h aerobic digestion and 3-h anoxic time. The results indicate that the change in anoxic time, specifically, from 6 to 3 h, can increase the alternating aerobic–anoxic process performance by approximately 53.4%. The average effluent inorganic nitrogen concentration decreased from 10.3 to 4.8 mg N/L, achieving the desired inorganic nitrogen concentration of less than 10 mg N/L in the outflow to meet the stringent effluent standards. The study offers a proper treatment that can be used to help reduce inorganic nitrogen pollution from municipal wastewater processed in a single-sludge reactor. The study's results advance the understanding of this simple technique that effectively removes inorganic nitrogen pollution from municipal wastewater.