1) shortcut denitrification
短程反硝化
1.
Effective factors of NO 2- accumulation is realizing shortcut nitrification denitrification are preliminarily discussed and controlled conditions in realizing shortcut denitrification are suggested.
对传统生物脱氮工艺原理和短程硝化—反硝化工艺原理进行了比较 ,分析了短程硝化 -反硝化技术的实用价值 ,提出了实现短程反硝化的控制条件。
2) denitrification
[di:naitrifi'keiʃən]
短程反硝化
1.
In recent years, shortcut nitrification and denitrification is widely studied as a shortcutprocess to reduce the oxygen consumption during nitrification and improve the velocity ofthe biological process for nitrogen removal.
以亚硝酸盐氮为电子受体的短程反硝化反应，速率受众多环境因子的影响，其中最为重要的有：温度、pH值、硝态氮浓度、有机碳源的种类与浓度等。
2.
In recent years,shortcut nitrification and denitrification is widely studied as a shortcut process to reduce the oxygen consumption during nitrification and improve the velocity of the biological process for nitrogen removal.
实验表明温度、pH值、亚硝态氮浓度、有机碳源的种类与浓度等均对短程反硝化反应有一定影响。
3) shortcut nitrification-denitrification
短程硝化-反硝化
1.
The principle of traditional biological nitrogen removal and shortcut nitrification-denitrification is compared,the practical value of the latter is analyzed, and the controlling factors are investigated.
对传统生物脱氮工艺原理和短程硝化-反硝化工艺原理进行了比较,分析了短程硝化-反硝化技术的实用价值,并就实现该技术工艺的控制因素进行了探讨。
2.
Several novel biological nitrogen removal technologies,for instance shortcut nitrification-denitrification and si- multaneous nitrification-denitrification and anaerobic ammonium oxidation.
并提出应用序批式反应器(SBR)实现短程硝化-反硝化生物脱氮工艺今后研究的发展方向和开发应用的前景。
3.
The biodenitrification treatment of wastewater with high-concentration ammonia nitrogen and low-concentration carbon was investigated in shortcut nitrification-denitrification process with intermittent aeration mode.
通过间歇曝气的运行方式,对高浓度氨氮低碳废水进行短程硝化-反硝化脱氮过程的研究。
4) short-cut nitrification-denitrification
短程硝化-反硝化
1.
Much nitrite could be found in the oxic section,thus the removal of nitrogen by hybrid bioreactor was achieved partly through short-cut nitrification-denitrification.
L-1时系统COD、氨氮去除率开始下降;在好氧区内检测到大量的NO2--N积累,表明HBR的脱氮作用部分是通过短程硝化-反硝化途径实现的。
2.
This paper introduces the advantages,principles and influential factors of three new processes of biological nitrogen removal in wastewater: short-cut nitrification-denitrification process,anaerobic ammonia oxidation process and step-feed biological nitrogen removal process,which can provide the new research direction and guidance for the biological nitrogen removal.
介绍了短程硝化-反硝化、厌氧氨氧化和分段进水生物脱氮3种污水生物脱氮新工艺的原理和特点,并对每一种工艺的影响因子进行了分析,为废水生物脱氮工艺的研究提供了新的方向。
5) shortcut nitrification-denitrification
短程硝化反硝化
1.
Effects of coupled system of an iron inner electrolysis method and shortcut nitrification-denitrification SBR on extracellular polymeric substances;
铁内电解与短程硝化反硝化SBR工艺耦合对胞外聚合物的影响
2.
Research of shortcut nitrification-denitrification in SBR under the real-time control;
实时控制SBR系统中的短程硝化反硝化
3.
Alternating oxic-anoxic shortcut nitrification-denitrification Ⅰ.realization and control;
交替好氧/缺氧短程硝化反硝化生物脱氮Ⅰ.方法实现与控制
6) short-cut nitrification and denitrification
短程硝化反硝化
1.
The effect of temperature on short-cut nitrification and denitrification
温度对短程硝化反硝化的影响
2.
Biological nitrogen removal technology via short-cut nitrification and denitrification is very significant for saving energy and carbon sources.
短程硝化反硝化技术对于节省能源和碳源具有重要意义。
3.
The SBR was used to treat landfill leachate,and the role of aerobic denitrification in short-cut nitrification and denitrification process was studied.
采用SBR反应器处理垃圾渗滤液,研究了短程硝化反硝化过程中好氧反硝化的作用。
补充资料：反硝化作用
硝酸盐在某些微生物的作用下还原为气态氮的过程。多发生于沼泽、湖泊和渍水土壤等缺氧环境中。其反应过程可简示为：2HNO3─→2HNO2─→2HNO─→N2。参与作用过程的微生物主要是反硝化细菌。作用的强度主要取决于土壤中的氧浓度和土壤pH。所有的反硝化细菌都是兼气性细菌，反硝化作用只有在土壤中的氧浓度较低时才能进行。当氧浓度减至5％以下时,反硝化作用明显增强。在过湿的环境中或在通气土壤的局部嫌气区（如根际），都能测得较明显的反硝化作用。反硝化作用的最适pH为7.0～8.2。当pH低至5.2～5.8或高达8.2～9.0时，反硝化作用的强度都会显著减弱。
在自然界，除上述通常由反硝化细菌引起的反硝化作用外，还常由以下途径使介质中的硝酸盐还原为气态氮:①某些微生物通过对硫的氧化或某些含硫化合物,而使硝酸盐还原:2S＋6KNO3＋2CaCO3─→2K2SO4＋2CaSO4＋2CO2＋3N2。 ②通过纯化学过程使硝酸盐还原为气态氮。但这一过程与真正的反硝化作用不同。
由于反硝化作用导致土壤氮或施入土壤中的氮肥中氮的损失，因而对植物生长不利。农业生产上常需采取措施改善土壤通气状况和调节土壤酸度，防止和减缓反硝化作用的发生。
在自然界，除上述通常由反硝化细菌引起的反硝化作用外，还常由以下途径使介质中的硝酸盐还原为气态氮:①某些微生物通过对硫的氧化或某些含硫化合物,而使硝酸盐还原:2S＋6KNO3＋2CaCO3─→2K2SO4＋2CaSO4＋2CO2＋3N2。 ②通过纯化学过程使硝酸盐还原为气态氮。但这一过程与真正的反硝化作用不同。
由于反硝化作用导致土壤氮或施入土壤中的氮肥中氮的损失，因而对植物生长不利。农业生产上常需采取措施改善土壤通气状况和调节土壤酸度，防止和减缓反硝化作用的发生。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条