Application of magnetic enhanced bio-effect on nitrification: a comparative study of magnetic and non-magnetic carriers.
Application of magnetic enhanced bio-effect on nitrification: a comparative study of magnetic and non-magnetic carriers.
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DOI：
10.2166/wst.2013.697
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发表时间：
2013-03
期刊：
影响因子：
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通讯作者：
Chuang Yao;Heng-yi Lei;Q. Yu;Shu-ping Li;Hualiang Li;Kaixuan Chen;Xinghong Zhang
中科院分区：
文献类型：
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作者：
Chuang Yao;Heng-yi Lei;Q. Yu;Shu-ping Li;Hualiang Li;Kaixuan Chen;Xinghong Zhang
研制了一种表面磁场为4 mT的新型磁性载体，用于研究磁性载体对硝化的生物强化效应。通过比较磁性载体（MC）和非磁性载体（NMC）序批式生物膜反应器的运行性能，研究了磁性载体对硝化作用的生物效应。结果表明，添加MC的生物反应器比添加NMC的生物反应器具有更好的硝化性能。在挂膜过程中，MC反应器的生物膜硝化作用形成所需的时间比NMC反应器少25%。结果还表明，在高进水NH 4-N浓度下，MC反应器的氨氧化速率比NMC反应器快1.6倍，而亚硝酸盐氧化速率则与进水NH 4-N浓度无关。比耗氧速率分析表明，在生物膜的MC反应器的氨和亚硝酸盐氧化活性的1.65和1.98倍，分别大于NMC反应器。
A novel magnetic carrier with surface magnetic field of 4 mT was developed for studying the magnetic enhanced bio-effect on nitrification. The bio-effect on nitrificaton induced by the magnetic carrier was studied by comparing the performance of sequencing batch biofilm reactors filled with magnetic (MC) and non-magnetic (NMC) carriers. The result showed that the bioreactor with MC had better performance for nitrification than bioreactor with NMC. During the biofilm culturing period, the time required for nitrification formation in biofilm of the MC reactor was 25% less than that for the NMC reactor. The results also showed that the ammonium oxidation rate of the MC reactor was 1.6-fold faster than that in the NMC reactor at high influent NH4-N concentration, while nitrite oxidation rate was always accelerated regardless of influent NH4-N concentration. The specific oxygen uptake rate analysis revealed that ammonia and nitrite oxidation activities in biofilm of the MC reactor were 1.65 and 1.98 times greater than those of the NMC reactor, respectively.