ammonia nitrogen

The results showed that ammonia nitrogen and sulfurated hydrogen had a notable toxic effect on the larvae of penaeus japonicus ( F> F_ 0.05), and the mortality rate of larvae increased significantly with the concentration.

实验结果表明：氨氮和硫化氢对日本对虾幼体的毒性作用显著（F>F0.05），随着浓度的增加，各期幼体的死亡率明显升高；

Ammonia nitrogen is one of the main contamination has seriously jeopardized the water environment, that cause eutrophic state& red tide phenomenon.

水体中富营养化引发赤潮现象频繁发生，已严重危害了水环境，其中主要元凶之一是氨氮废水大量排放，使原本恶化的水质雪上加霜。

The result of ammonia nitrogen blow-off experiment showed that under the condition of water temperature 20.6 ℃, pH value 10.8, and the blowing period 4h, the ammonia nitrogen removal efficiency was 80.8%.

氨氮吹脱试验结果表明，在水温为20.6℃、pH值为10.8、曝气时间为4h的条件下，氨氮去除率为80.8%。

Adopting break point chlorination and managing related factors conditions made the concentration of ammonia nitrogen in outlet water significantly less than the national standard.

控制折点氯化法工艺条件，出水氨氮明显低于国家排放标准。通过焦炭有效去除水中余氯，达到安全排放。

The key pollution indicators are ammonia nitrogen and BOD.

主要污染指标是氨氮和生化需氧量.

Continuous treatment of high-loaded ammonia nitrogen wastewater was carried out by a self-made integrative anoxic/ oxic hybrid bioreactor.

利用自制的一体式缺氧/好氧（A/O）复合式生物反应器（HBR），对高浓度氨氮废水进行了脱氮研究。

The pitting corrosion potential of 316 stainless steel increases along with the ammonia nitrogen density decrease.

在模拟中水中,随着氨氮浓度的增加,316不锈钢的孔蚀电位减小.

It showed that biological pretreatment of polluted source water was effective and without side-effect specially in removing ammonia nitrogen, phenol and organic contaminants.

分析结论是，污染源水的生物法预处理是一种经济有效且无副作用的方法，其本质是水体天然自净过程的人工化，对NH3-N、酚和有机物，具有较满意的去除效率。

Both synergy of heterogeneous catalysis ozone craft and lift aeration active filter technology is better. The removal efficiency ratio of COD is approximate 1:1, while the removal efficiency of lifting aeration active filter technology on ammonia nitrogen is above 90%.

多相催化臭氧工艺和升降曝气活性滤池工艺两者的协同作用较好，COD去除效能之比近似为1：1，升降曝气活性滤池工艺对氨氮去除率为90%以上。

The effect of effective micro organisms ( EM) on the removal of common pollutants in domestic sewage had been discussed. Common pollutants were organic contamination, and total nitrogen, and total phosphor, and ammonia nitrogen.

本文通过投加微生态制剂EM培养活性污泥处理生活污水，探讨了EM对污水中的有机物、总磷、总氮、氨氮的去除效果的影响。

Study on Removing Organic Matter and Ammonia Nitrogen with the Aerobic Biofilm Filter Bed

好氧生物膜滤床去除COD及NH3-N的研究

The monitoring indexes of the tertiary industry of this study are more comprehensive than ever. The new indexs include ammonia nitrogen, total nitrogen, total phosphorus, lead and mercury.

本次第三产业系数研究工作与已有系数研究相比，在监测指标上更为全面，增加了氨氮、总氮、总磷、铅、汞等指标。

So the problem of unfavorable effect of ammonia nitrogen in wastewater reuse has been solved.

利用循环冷却水系统不需增加费用就可以脱除污水中氨氮,从而消除了污水回用中氨氮的影响.

During the dynamic simulation process, the average relative error of total COD, ammonia nitrogen, TN and TP was 12%, 27%, 16% and 11% respectively. The result indicated that the model could simulate the integrative biofilm system properly.

动态模拟过程中，总COD、氨氮、TN和TP的模拟平均相对误差分别为12%、27%、16%和11%，说明该机理模型对一体化生物膜系统能起到较好的模拟作用。

Ammonia nitrogen adsorption isotherm of tidal flat surface sediments from the Yangtze Estuary

河口潮滩沉积物对氨氮的等温吸附特性

The main problems of applying recycled ammonia-nitrogen containing wastewater to circulating water systems are analyzed.

作者分析了含氨氮污水回用于循环水时所要解决的主要问题,认为氨氮是导致腐蚀率增加的主要因素.

Decompose unnecessary organic matters, such as ammonia, nitrogen, phosphorus, to achieve the purpose of water quality.

有效分解水体中的多余有机物 、 氨 、 氮 、 磷等物质, 达到净化水质的目的.

Adopting quartz sand and active carbon to filtrate have achieved good results, and biological turnplate made biological filtrating and contemporary removed ammonia-nitrogen.

采用石英砂加活性炭过滤，其效果显著且经济，生物转盘进行生物过滤能同时去除氨氮，臭氧杀菌方便卫生且兼有增氧作用。

The parameters needed to measure are Oxidation-Reduction Potential ORP, Dissolved Oxygen ( DO ) , content of ammonia nitrogen.

测量的参数指标主要包括:氧化还原 电位, 溶解氧 、 氨氮总量.

The major pollution indicators in the Yangtze River system are petroleum and ammonia nitrogen.

长江水系的主要污染指标是石油类、氨氮和高锰酸盐指数.与上年相比,水质持平.

Technical Reform of Ammonia Recovery Installation from Ammonia Nitrogen Waste Water

从氨氮废水中回收氨装置的技术改造

Pollution of manganese and ammonia nitrogen in water supply of Fuyang water source

富阳市生活饮用水锰、氨氮污染的调查

This avoid ammonia nitrogen loss in the measurement and distillation steps.

避免了称量时易造成的样品损失及蒸馏过程的氨氮损失.

After cultivated, the ammonia-nitrogen and sulphide content in it were determined.

培养接入菌种的臭液, 测定其 氨氮 含量和硫化物含量.

Purpose: Studies the removal effect on ammonia nitrogen, nitrous acid nitrogen, CODMn and turbidity during immobilized nitrobacterias pilot experiment, and provide reference for the actual project.

目的分别研究小试中试条件下固化硝化菌对氨氮的去除效果及相关参数的选择，为实际工程提供参考。

Study on Flue Gas Desulfurization with Thiobacillus Ferrooxidans; Isolation, Identification and Characteristics of a High-efficiency Bacterial Strain for Desulfurization and Ammonia Nitrogen Removal

氧化亚铁硫杆菌脱除烟气中SO2的研究高效脱硫脱氨氮菌株的分离、鉴定及特性研究

The adsorption of palygorskite, collected from Xuyi, Jiangsu province, on ammonia nitrogen in waste water was discussed in the paper.

采用江苏盱眙凹凸棒石粘土进行模拟氨氮废水的脱氮实验研究。

Research on preparation of adsorbent for ammonia nitrogen waste water with palygorskite

利用凹凸棒土制备废水氨氮吸附剂的研究

Study on adsorption of KDF resin for ammonia nitrogen in sewage effluents

KDF树脂对于污水厂出水氨氮的吸附试验研究

Method of Salicylate-hypochlorous acid Ameliorated for Determining Ammonia Nitrogen

水杨酸&次氯酸盐测定水中氨氮方法的改进