Nodule bacteria are very good at biological nitrogen fixation.
根瘤菌是生物固氮的能手。
Nitrogen fixed by legume root nodules accounts for 40% of total biological nitrogen fixation.
豆科植物的根瘤固氮占生物固氮总量的40%。
Anaerobic ammonium oxidation (ANAMMOX) is an innovative process of biological nitrogen removal.
厌氧氨氧化是一种全新的生物脱氮工艺。
The step feed biological nitrogen removal process(SFBNP) has distinct advantages in nitrogen removal.
分段进水生物脱氮工艺在脱氮方面具有较强的优势。
In order to simulated biological nitrogen fixation, a series of studies on nitrogenase are proceeded.
为了模拟生物固氮，对固氮酶进行了一系列的研究。
The influence of internal recycle ratio and influent loads on biological nitrogen removal was discussed.
结果考察工艺的启动挂膜性能以及硝化液回流比和进水负荷对脱氮效果的影响。
Shortcut biological nitrogen removal process was currently widely concerned due to saving energy and carbon.
目前亚硝酸型生物脱氮因为其节约能源和碳源备受人们的关注。
Nitrogen fixation trees of Leguminosae and non-Leguminosae are important biological nitrogen fixation resources.
豆科及非豆科固氮树种是重要的生物固n资源。
The leachate after pretreatment were fed to MBR to finish the degradation of the organic carbon and biological nitrogen removal.
预处理后的渗滤液经MBR反应器完成有机物的降解和生物脱氮…
The research and practical appliance of biological nitrogen and phosphorus removal technology is gradually deserved appreciation.
生物脱氮除磷工艺的研究和应用工作日益得到重视。
The traditional methods of biological nitrogen removal adopted nitrification and nitrification technology, but there are lots problems.
传统的生物脱氮采用的是硝化、反硝化工艺，但存在着很多问题。
Early study object of the biological nitrogen fixation bacterium is the Rhizobium which related to the nitrogen fixation of the Leguminosae.
其中研究的较早的生物固氮菌是与豆科植物共生固氮的根瘤菌。
Dissolved oxygen (DO) content is a key affective factor for the biological nitrogen removal by simultaneous nitrification and denitrification.
溶解氧(DO)含量是实现同时硝化反硝化生物脱氮的关键因素之一。
The biological nitrogen and phosphorus removal effect and characteristics of SBR process in the treatment of sludge water from WWTP were investigated.
考察了采用SBR工艺处理城市污水厂污泥水的脱氮除磷效果及其特性。
Biological nitrogen fixation (BNF), which provides all the plants on the globe with 75% of fixed nitrogen, is one of the important projects in life science.
生物固氮为全球的植物提供75%的氮素，是生命科学中的重大课题。
The shortened nitrification process for biological nitrogen removal has been a hot topic in the field of wastewater treatment at home and abroad in recent years.
短程硝化生物脱氮处理技术是近年来国内外水处理研究的一个热点。
It is important to quantitatively characterize biological nitrogen fixation (BNF) of soybean for farmland fertilizer management and non-point source pollution control.
定量描述大豆生物固氮量对于施肥管理以及农业非点源污染控制具有十分重要的意义。
Biological nitrogen removal through nitrification and denitrification was the main removal mechanism of nitrogen, which could remove about 50% of influent total nitrogen.
地下渗滤系统中通过硝化、反硝化作用可以去除约50%的进水总氮，是地下渗滤系统去除氮的主要途径。
In wastewater biological nitrogen and phosphate removal processes, microorganisms need to consume certain organic carbon sources both in denitrification and phosphorus uptake.
污水生物脱氮除磷工艺中，微生物在反硝化和吸磷时需要消耗一定的有机碳源。
A lab-scale SBR was employed to treat domestic wastewater and investigate the achievements and stability of shortcut biological nitrogen removal under real-time control conditions.
采用小试SBR反应器处理实际生活污水，研究了实时控制条件下短程生物脱氮的实现和稳定性。
Partial nitrification of ammonia-containing wastewater can save energy and reduce cost, and has become one of the hotspots in the research of biological nitrogen removal from wastewater.
含氨废水的短程硝化能够实现节能降耗，是目前废水生物脱氮领域的研究热点。
Based on traditional biological nitrogen removal theory, nitrogen removal involves nitrification of ammonia to nitrate or nitrite followed by denitrification of nitrate or nitrite to nitrogen gas.
依据常规生物脱氮原理，脱氮过程包括将氨氮氧化为硝酸盐氮或亚硝酸盐氮的硝化反应和将硝酸盐氮或亚硝酸盐氮还原为氮气的反硝化反应。
Biological pretreatment technology is an economic and efficient method to remove ammonia - nitrogen in micro - polluted raw water.
生物预处理是去除微污染源水中氨氮的一种经济有效的方法。
Nitrogen monoxide (no) as a vasoactive peptide with many kinds of biological activity is an important regulatory factor for the self-regulation of eye vessels.
一氧化氮(NO)是具有多种生物活性的血管活性物质，是眼部血管自我调节的一个重要调节因子。
Aiming at the poor effect of amino nitrogen degradation in conventional refinery oil sewage treatment, the secondary biochemical test was carried with biological aeration filter pool.
针对炼油厂含油废水的常规生化处理工艺对氨氮的降解效果较差，采用曝气生物滤池作为二级生化进行试验研究。
Biological denitrogenation technology, which removes more nitrogen from the original average processing by rate of 2% ammoniac nitrogen is narrated in aspects of theory, equipment and processes.
从原理、设备与流程等方面叙述了生物脱氮技术，使原来平均处理率仅为2%的氨氮得到了较为满意的效果。
It is found that HRT, influent ammonia nitrogen and external carbon source have significant effect on biological nitrification and denitrification.
通过试验发现HRT、进水氨氮和外碳源对生物硝化和反硝化有重要影响。
It is found that HRT, influent ammonia nitrogen and external carbon source have significant effect on biological nitrification and denitrification.
通过试验发现HRT、进水氨氮和外碳源对生物硝化和反硝化有重要影响。
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