查询词典 denitrification

The invention pertains to the technical field of environmental protection, in particular to a method used for improving the biological dephosphorization and denitrification efficiency of actual sewage under anaerobic-hypoxia condition.

本发明属于环保技术领域，具体涉及一种提高实际污水在厌氧-低氧条件下同时生物除磷脱氮效果的方法。

In this paper,the research history and status were summarized.The processes of soil nitrogen input,interior transformation and output,including litter return,fertilization,atmosphere desposition,ammonification nitrogen fixation,ammonification,nitrification,denitrification,plant uptake,NH 3 volatilization and NO 3- leaching,were introduced.Finally,the tendency of study on soil nitrogen...

本文综述了森林土壤氮素转化与循环的研究历程和现状；介绍了凋落物的归还、施肥、大气沉降、自生固氮、氨化、硝化、反硝化、植物吸收、NH3 的挥发、NO3 -淋溶等土壤氮素输入、转化和输出的途径和过程；最后从研究目标、研究方法、研究对象和研究内容 4个方面归纳了森林土壤氮素转化与循环的发展趋势。

As an innovative technology, biodenitrification had been widely studied and applied at home and abroad,it provides a feasible and forehanded way for the environmental denitrification.

生物脱氮作为一种新兴技术，已经在国内外开展了广泛的研究和应用，为环境领域的脱氮处理提供了一个实用而节能的新途径，因此，集中对生物脱氮技术在废气和废水中的应用进行了介绍，分别介绍了这两个方面的进展，并简单比较了各种技术的优缺点，还探讨了生物脱氮技术的今后发展方向。

Study on single-stage biodenitrification by immobilized cells;2. As an innovative technology, biodenitrification had been widely studied and applied at home and abroad,it provides a feasible and forehanded way for the environmental denitrification.

生物脱氮作为一种新兴技术，已经在国内外开展了广泛的研究和应用，为环境领域的脱氮处理提供了一个实用而节能的新途径，因此，集中对生物脱氮技术在废气和废水中的应用进行了介绍，分别介绍了这两个方面的进展，并简单比较了各种技术的优缺点，还探讨了生物脱氮技术的今后发展方向。

A kind of bacteria with capability of heterotrophic nitrification-aerobic denitrification have been reported in recent years.

近年来发现了一类具有偶联异养硝化-好氧反硝化功能的细菌。

The transition metal carbides were a new class of catalysts which had good catalytic activity and selectivity and were widely used in hydrogenolysis,dehydrogenation,desulfidation,denitrification,reforming,and other hydrocarbon conversion reactions.

过渡金属碳化物作为一种催化新材料得到了人们广泛的关注，在催化加氢、脱氢、脱硫、脱氮和重整等方面，表现出优良的催化活性和选择性。

The major bacteria of the activate sludge were identified to be Vorticalla convalleria and Aspidiacs spp., both were considered as responding to denitrification of high nitrate-N of lead azide wastewater.

中文摘要为了探讨含有高浓度硝基氮之叠氮化铅制程废水生物脱氮效能，本研究利用统一食品公司所提供的厌氧污泥进行脱氮菌的培养，经过了15天的培养其培养出大部份都是钟口菌属Vorticella convalleria ，和一小部份则为纤毛虫属aspidisca sp。，来进行含有高浓度硝基氮的氮化铅制程废水生物处理过程中的脱氮作用之研究。

The structure and shape of magnesia base catalyst-sorbent before and after denitrification were characterized by XRD and FT-IR.

利用红外光谱、X射线衍射对脱硝处理前后的氧化镁基催化吸附剂进行了分析，探讨其脱硝的机制。

Therefore, nitrification and denitrification has attracted more attention, whether from an agricultural point of view, or from an environmental point of view.

因此，无论是从农业的观点，还是从环境的角度看，硝化反硝化作用已引起人们越来越多的关注。

The atmospheric phase is predominant in the global nitrogen cycle, in which nitrogen fixation and denitrification by miocroorganisms are of particular importance.

在全球氮循环中，气相是占优势的，其中，氮的固定和微生物的脱氮作用特别重要。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。