En iso 9509 water quality . method for assessing the inhibition of nitrification of activated sludge micro - organisms by chemicals and waste water 水质.通过化学药品和污水对活性污泥中微生物硝化作用抑制的评定方法
Strain hn could ammonize organic nitrogen compounds and nitrify ammonia itself when it grew on acetamide companying the formation of ammonia and nitrite 该菌株能以乙酞胺为唯一碳源和氮源进行氨化作用和硝化作用并产生亚硝酸。
Water quality - method for assessing the inhibition of nitrification of activated sludge micro - organisms by chemicals and waste water iso 9509 : 1989 ; german version en iso 9509 : 1995 水质.用化学制品和污水法激活污泥微生物抑制硝化作用
Nitrification , performed oxidation of ammonia to nitrate by nitrifying bacteria is a key process in the cycling of nitrogen and an impotent component of modern wastewater treatment 由硝化细菌催化氨氮氧化的硝化作用是氮循环的关键步骤，也是现代污水处理厂生物处理氨氮废水的重要环节。
Using this product for long term , can efficiently avoid the suffocation of nitrification , promote the cycle of nitrogenous substance , avoid the water quality worsen and purify water quality , reduce the risk of breeding and increase the breeding benefit 长期使用用本品后可有效避免硝化作用受阻、推动含氮物质的循环、避免水质恶化、净化水质降低养殖风险、提高养殖效益。
All the indexes of the second generation in the soil microorganism quantity , biomass , biochemistry activity and the change of soil enzyme activity of p . massoniana under the same condition are higher than those of the first generation 结果表明，二代马尾松林土壤微生物数量、微生物生物量碳强度、呼吸作用强度、硝化作用强度、蔗糖酶以及过氧化氢酶活性均高于一代马尾松林。
The order of four soil biochemical intensity being sensitive to heavy metal pollution indicated as : nitrification > nitrogen fixation > decomposition of cellulose > ammonification . however , soil microbial biomass c : n ratio increased with the increasing of heavy metals level 几种生化作用强度的下降顺序为硝化作用固氮作用纤维素分解强度氨化作用；但土壤微生物生物量碳氮比则随着重金属污染水平的升高而增加。
The contents of organic matters , tn and tp in sediment layer from 0 - 20cm also decreased after 2 months of harvested , but nh / - n and no3 - - n increased due to the amelioration of transperancy and aeration , which accelerated ammonification and nitrification 2个月以后，收割区底泥0 - 20cm深度范围内有摘要机质、 tn 、 tp含量明显下降，收割改善了湿地的通风、透气条件，促进了氨化和硝化作用的发生，使底泥中nh扩一n和n岛一n含量上升。
The exchange rates of no3 - n at the sediment - water interface were mainly controlled by the difference of the concentrations between the pore water and the overlying water . may be the nitrification or the denitrification and the degradation of organic matter were the key processes during the exchange of din and the processes were controlled by the temperature and the do . 3 扩散过程可能是控制no3一n界面交换速率的主要过程之一，浓度差的大小决定了其速率快慢;而发生在界面上的有机物的降解和硝化或反硝化作用可能是控制n岛一n 、 n仇一和nh4一界面交换的主要过程，温度和do浓度是控制这一交换过程速率的主要因子。
Because there are a great quantity ' s heterotrophic bacteria in the breeding pool , which will have the repulsion action to the insufficient quantity ' s nitrifier and prevent the nitrification , the situation will bring the accumulating of nitrite which is the middle substance of nitrification in water , the long term accumulated nitrite can debase fish and shrimp ' s disease - resistant and decrease the growth and even die 由于养殖池中存在大量的异养菌，受到异养性细菌排斥，本身无足够数量的硝化菌，硝化作用往往受阻，结果就会引起硝化作用的中间产物亚硝酸盐在水体内的累积、亚硝酸盐长期蓄积会使鱼虾等抗病力降低、生长受阻、严重者中毒死亡。
