查询词典 nitrification

BOD removal and nitrification can be achieved in a single step of treatment with no change in operation.

去除BOD和硝化反应可以通过单独的一步反应实现，不需要变更操作。

The profile distributions of silicate, phosphate and nitrate suggest that the organic material decomposition in area is mainly through nitrification during early diagenesis. Based on benthic fluxes of nutrients calculated using Fick's first law, benthic fluxes of silicate, phosphate and nitrate are -886.45~42.62 mol/(m^2d),-3.04~5.83 mol/(m^2d) and -189.43~21.05 mol-(m^2d), respectively, and perhaps silicate and nitrate are one of the major sources of nutrients for bottom water. Our results also reveal temporal and spatial variations of benthic fluxes for silicate, phosphate and nitrate, which may be related to sedimentation environment changes caused by global climatologic change.

在水－沉积物介面附近矽酸盐、磷酸盐和硝酸盐都存在著极陡的浓度梯度，Fick扩散定理的计算结果表明，研究区内矽酸盐、磷酸盐和硝酸盐的海底扩散通量分别为-886.45～42.62mol/、-3.04～5.83mol/和-189.43～21.05mol/，且矽酸盐和硝酸盐主要是从沉积物向底层水体扩散，是底层水体营养盐的来源之一；研究区内矽酸盐、磷酸盐和硝酸盐的海底扩散通量存在著一定的时间和空间变化，这可能与因全球气候变化而导致的沉积环境的改变有关。

High concentration nitric wastewater can realize stable nitrous nitrification by ANIS process (continually influence、intermittently decantation), the influence and decant volume of the reactor is only half of its volume.

4高浓度氨氮废水实现稳定亚硝化宜采用ANIS反应工艺，反应器每周期进、出水量仅为其反应容积的一半。

The active layer in MEEF composed of the granular material from plants, where earthworms act as declogger, decomposer and facilitating a nitrification-denitrification process within the biofilm.

蚯蚓在滤床中起分解和利用污水和污泥中的有机物和营养物质、清通滤床以及促进含氮物质的硝化与反硝化作用。

The experiment indicates that the nitrification and denitrification rates accelerate along with rising of the temperature.

试验表明，硝化和反硝化速率随温度的升高而加快。

The results showed that DO is one of the most important controlling parameters for realizing shortened simultaneous nitrification and denitrification.

试验结果表明，溶解氧浓度是实现短程同步硝化反硝化的一个重要控制参数。

The results of experiment imply that there is obvious simultaneous nitrification and denitrification process in the reactor.

实验研究表明，反应器内具有较明显的同步硝化反硝化过程。

It is obvious that decreasing the temperature had more effect on nitrification than on denitrification in this short-cut system.

可见降低温度对于短程系统硝化反应的影响要大于反硝化的影响。

Microbiological nitrification and denitrification were considered to be the major sources of N2O in wastewater treatment processes.

微生物的硝化及反硝化过程为污水处理过程中N2O的主要产生源。

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。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。