查询词典 nitrogen-fixing bacteria

Seaweed extract-EClean was applied to treatment for eutrophication water. Quantative detection of nitrogen cycle bacteria showed that seaweed extract could improve the growth of ammonifying bacteria, nitrosobacteria and nitrobacteria in the treated water. There was also an increasing trend in the number of denitrifying bacteria in aerated treatment water, which showed that the seaweed extract could accelerate nitrogen cycle and the release of nitrogen from water.

利用国外引进的海藻提取物EClean制剂对富营养化水体进行处理试验，经过定量测定处理和对照水体中氮循环细菌数量的变化，得出EClean制剂能够促进水体的氨化细菌、亚硝化细菌、硝化细菌的生长，并维持了曝气条件下一定数量的反硝化细菌，通过此处理使得在同一反应器中、同一条件下完成硝化作用和反硝化作用成为可能，加速了水体的氮素循环，使水体总氮下降明显。

Conclusion］ The ammonifiers in nitrogen utilizing bacteria in Danhe water was in much distribution,the nitrobacteria,nitrosation and denitrifying bacteria were at next and azotobacter was relatively less.

结论］ 丹河水体中的氮利用菌中氨化细菌分布较多，硝化细菌、亚硝化细菌和反硝化细菌次之，固氮菌则相对较少。

In 1975 Dbereiner experimentally found the associative symbiotic nitrogen-fixation bacteria associated with graminaceous plant and put forward the concept of rhizosphere associated NF.

1975年，Dbereiner实验发现与禾本科植物联合共生的固氮菌并提出根际联合固氮的概念。

This paper first report the distribution and role of four nitrogen cycle bacteria in the artificial ecosystem of Taihu Lake.

对太湖五里湖的以水生高等植物为主的湖泊人工生态系统，用最大可能数法，测定了该系统内各种生态类型水生高等植物群落内的4类氮循环细菌的分布。

Low abundance and poor compositions of nitrogen utilizing bacteria suggested poor bacterial diversities and weak self-purification of the lake.

这些功能菌群较低的生物量和不太丰富的生物多样性预示着湖泊弱的水体自净能力。

A submerged membrane sequencing batch bioreactor was used to treat coke wastewater.Long running performance showed that due to the membrane interception,the nitrobacter is enriched in reactor in the interest of improving the nitrification rate;the maximum ammonia nitrogen loading can be 0.19 kg/(m3·d) with effluent ammonia nitrogen＜1 mg/L (removal rate 99%).Long sludge retention time may result in the accumulation of metabolic products and high molecular materials,and thus inhibiting activity of nitrate bacteria and causing a ccumulation of NO2-,which is beneficial to the running of short-cut denitrif ication.However,too long retention time will affect the activity of nitrite bacteria,detrimental to the treatment effect of ammonia nitrogen.

采用浸没式膜生物反应器处理焦化废水的试验结果表明：膜的截留作用可使硝化菌在反应器内富集而有利于提高系统的硝化能力，其去除氨氮的最高负荷为0.19kg/(m3·d)，出水氨氮＜1mg/L(去除率为99%)；泥龄长可能使微生物的代谢产物或其他大分子物质积累，从而抑制硝酸盐细菌的活性，导致NO2-积累而有利于短程脱氮的进行，但泥龄过长也会影响亚硝酸盐细菌的活性，从而影响对氨氮的处理效果。

A submerged membrane sequencing batch bioreactor was used to treat coke wastewater.Long running performance showed that due to the membrane interception,the nitrobacter is enriched in reactor in the interest of improving the nitrification rate;the maximum ammonia nitrogen loading can be 0.19 kg/(m3·d) with effluent ammonia nitrogen＜1 mg/L (removal rate 99%).Long sludge retention time may result in the accumulation of metabolic products and high molecular materials,and thus inhibiting activity of nitrate bacteria and causing a ccumulation of NO2-,which is beneficial to the running of short-cut denitrif ication.However,too long retention time will affect the activity of nitrite bacteria,detrimental to the treatment effect of ammonia nitrogen.

简介： 采用浸没式膜生物反应器处理焦化废水的试验结果表明：膜的截留作用可使硝化菌在反应器内富集而有利于提高系统的硝化能力，其去除氨氮的最高负荷为0.19kg/(m3·d)，出水氨氮＜1mg/L(去除率为99%)；泥龄长可能使微生物的代谢产物或其他大分子物质积累，从而抑制硝酸盐细菌的活性，导致NO2-积累而有利于短程脱氮的进行，但泥龄过长也会影响亚硝酸盐细菌的活性，从而影响对氨氮的处理效果。

The identification would be much important not only to exploit new nitrogen-fixtion bacteria but also to study microbial taxology.

通过这一菌种的分离和鉴定，不但对开发新的固氮菌资源，也对细菌分类学的研究具有一定的意义。

The artifical fillers are hung under the plant floating bed then the remedial system combined by plant and microorganism came into being. The remedial effectiveness of the system was visibly better than that of the phytoremediation alone. So when the temperature is higher the remedial system combined by plant and microorganism is the preferable remedial technique to remedy contaminated water. In autumnal end and winterly outset, the temperature is lower, the plants begin to fade and die, and the plant must be harvested lest the relict of plant should contaminate water again. At the same time the technique combined by immobilized nitrogen cycling bacteria and microorganism which already existed in the water was used to remedy contaminated water.

将人工填料悬挂于植物浮床下，形成植物和微生物相结合的修复系统，其修复效果明显好于单独植物修复技术，因此温度较高时用植物和微生物共同结合的生物修复技术修复水体污染；秋末冬初温度较低时，植物开始死亡，必须将植物收割，以免植物残体造成二次污染，此时用固定化氮循环细菌和水体中原有微生物相结合的技术来修复水体的污染。

These nitrogen cycle bacteria include ammonifying bacteria, denitrifying bacteria, nitrobacteria and nitroasobacteria, determined with MPN method.

结果表明，反硝化细菌的最大可能数，在水生高等植物群落内水体中较敞水区湖水高2－5个数量级，差异极显著（P＜0.01），漂浮植物群落内水体的反硝化细菌MPN值较沉水和浮叶植物群落内水体高2－3个数量级，差异极显著（P＜0.01）；硝化细菌MPN值，敞水区湖水高于凤眼莲、水花生群落内水体，差异显著

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失