1) partial nitrification and denitrification
短程硝化与反硝化
2) 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。
3) 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。
4) 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
5) 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。
6) short-cut nitrification-denitrification
短程硝化反硝化
1.
The principal of short-cut nitrification-denitrification is briefly introduced in this paper,which is controlling ammonia-oxidation in the nitrite reaction stage and straightly into the denitrification process but not through nitrification process.
简要地介绍了短程硝化反硝化生物脱氮的机理,即控制氨氧化停留在亚硝化反应阶段,不经过硝化直接进行反硝化。
2.
The paper discuss several methods fitting to ammonia nitrogen removal from the leachate,such as adjusting pH,ammonia treatment,SND,short-cut nitrification-denitrification,anaerobic ammonium oxidation.
从垃圾填埋场渗滤液中氨氮的特性及其对渗滤液生化处理的影响出发,结合渗滤液回灌探讨几种适于渗滤液中氨氮的脱除技术——调节pH值、氨吹脱、同步硝化反硝化、短程硝化反硝化、厌氧氨氧化,可供类似工程借鉴。
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