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ammonium nitrification
相关语句
  铵态氮硝化
     Effects of different application rates of 3,5-dimethylpyrazole on soil ammonium nitrification and crop growth
     3,5-二甲基吡唑对铵态氮硝化及作物生长的影响
短句来源
  “ammonium nitrification”译为未确定词的双语例句
     During the periodsof incubation, NH_4~+ - N,NO_3~- - N and non - exchangeable ammonium were determined atcertain intervals in orderto study the relatioships between ammonium nitrification and fixation byclay ninerals.
     培养期间分期测定NH~+_4—N,NO~-_3—N及非代换性铵,旨在探讨石灰性土壤中NH~+_4—N的硝化与粘土矿物晶层固定的关系。
短句来源
     Ammonium Nitrification and Fixation by Clay Minerals in Calcareous Soil
     石灰性土壤中NH_4~+—N的硝化与NH_4~+—N的粘土矿物固定
短句来源
     pH decline in the soil treated with NH4+-N was the biggest in all treatments, which should ascribed mainly to the ammonium nitrification.
     土壤中的活性态重金属与易活性念和锰氧化物结合态重金属之间存在着平衡关系,相互间的转化主要受土壤pH的制约,在低pH条件下,有利于向活性态转化,在高pH条件下则有利于向易活性态和锰氧化物结合态转化。
短句来源
     Based on incubation tests with labelled and unlabelled urea, this payer discussed the effects of hydroquinone on hydrolysis of urea, release and volatilization of ammonium, nitrification, denitrification and immobilization.
     本文根据用标记和非标记尿素进行的培养试验,论述了氢醌对于尿素的水解、氨的释出和挥发、硝化和反硝化作用以及生物固持的影响。
短句来源
     High ammonium nitrification was studied for a SBR feactor with unfixed and fixed oxygen supply rates.
     采用非固定氧供给模式和固定氧供给模式对序批式活性污泥反应器的硝化性能进行了研究。
短句来源
  相似匹配句对
     EFFECT OF AMMONIUM THIOSULFATE ON SOIL NITRIFICATION
     硫代硫酸铵对土壤硝化作用的影响
短句来源
     INHIBITED NITRIFICATION AND AMMONIA VOLATLIZATION OF AMMONIUM CHLORIDE
     氯化铵的硝化抑制和氨化损失
短句来源
     NITRIFICATION OF WASTEWATER
     废水的硝化作用
短句来源
     Nitrification Inhibitor
     硝化抑制剂
短句来源
     Modification of Ammonium Nitrate
     硝酸铵的改性
短句来源
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  ammonium nitrification
This was achieved by eliminating the gap in timing between urea hydrolysis and ammonium nitrification.
      


Agric horizon and argillitic horizon (with 1/4 agric horizon in it) were used as two soils forincubation experiments at 30℃ withot and with N,K, and NK applications. During the periodsof incubation, NH_4~+ - N,NO_3~- - N and non - exchangeable ammonium were determined atcertain intervals in orderto study the relatioships between ammonium nitrification and fixation byclay ninerals. The results show that NO_3~- - N formed by nitrification was increased byexponential curves, while NH_4~+ -N decreased...

Agric horizon and argillitic horizon (with 1/4 agric horizon in it) were used as two soils forincubation experiments at 30℃ withot and with N,K, and NK applications. During the periodsof incubation, NH_4~+ - N,NO_3~- - N and non - exchangeable ammonium were determined atcertain intervals in orderto study the relatioships between ammonium nitrification and fixation byclay ninerals. The results show that NO_3~- - N formed by nitrification was increased byexponential curves, while NH_4~+ -N decreased by power function curves or opposite S curves andfinally reached stable levels. The nitrification in agric horizon was strong, and ammoniumfixation by soil wasless as compared with argillitic horizon. Application of N fertilizers couldsignificantly increase the contents of NO_3~- - N, NH_4~+ - N and nonexchangeable ammonium.Agric horizon could easily fix ammonium and release the fixed, while argillitic horizon could noteasily release the ammonium after fixation. There was no obvious effects on reducing NH_4~+ -Nfixation in argillitic horizonby applying K.

用杨陵地区红油土的耕层及粘化层(混入1/4耕层土壤)作为2种供试土壤,各设不施,施N,施K,施NK4个处理,在30℃下恒温培养。培养期间分期测定NH~+_4—N,NO~-_3—N及非代换性铵,旨在探讨石灰性土壤中NH~+_4—N的硝化与粘土矿物晶层固定的关系。结果表明,硝化形成的NO~-_3—N以指数曲线递增,NH~+_4—N则以幂函数曲线及反S型曲线递减,最终都达到一个比较稳定的水平。耕层土壤中的NH~+_4—N的硝化作用强烈,被土壤固定量少,粘化层则恰好相反。施入氮肥能显著地增加NO~-_3—N,NH~+_4—N及非代换铵的含量。耕层土壤易固定也易释放固定的NH~+_4—N;粘化层固定后不易释放。施K对减少粘化层NH~+_4—N的固定无明显效果。

On the basis of Haldane nitrifier growth model,it is confirmed theoritically that the completely-mixed activated sludge reactor can be the optimum one for simultaneous carbonaceous oxidation (COD degradation ) and ammonium nitrification. The optimum NH3-N concentration (7.4 mg/L) in the aeration tank is also given. A laboratory scale experiment using synthetic resin production wastewater which 350-400 mg/L COD and 180 mg/L NH3-N are contained is conducted. The results show that ammonium nitrification...

On the basis of Haldane nitrifier growth model,it is confirmed theoritically that the completely-mixed activated sludge reactor can be the optimum one for simultaneous carbonaceous oxidation (COD degradation ) and ammonium nitrification. The optimum NH3-N concentration (7.4 mg/L) in the aeration tank is also given. A laboratory scale experiment using synthetic resin production wastewater which 350-400 mg/L COD and 180 mg/L NH3-N are contained is conducted. The results show that ammonium nitrification rate and COD removal efficiency can reach 90% and 65% respectively, in a single activated sludge process when hydraulic retention time (HRT) is controlled at 8h. Ammonium can be completely nitrified with HRT 10h. whereas COD removal efficiency can be maintained unchanging.

以硝化菌增长的Haldane模式为基础,通过理论分析证明,完全混合式活性污泥反应器是碳氧化(COD降解)和NH3—N硝化合并处理工艺的最佳反应器,给出了曝气池NH3—N的最佳浓度(7.4mg/L).在此基础上,采用单级活性污泥法处理同时含有COD350—400mg几和NH3—N150mg/L的树脂生产废水,结果表明:当控制水力停留时间(HRT)为8h时,NH3—N的硝化率和COD去除率分别为90%和65%,将HRT延长至10h,NH3—N可完全硝化,而COD的去除率并不降低。

High ammonium nitrification was studied for a SBR feactor with unfixed and fixed oxygen supply rates.Experimental results showed that oxygen supply models have significant efects on the nitrification ability and product as well as the composition of the sludge of SBR for high ammonoum nitrification.Ammonium and nitrite oxidations were taking place simultaneously with unfixed oxygen supply model but seqentially with fixed oxygen supply model.Ammonium oxidizers developed an ability...

High ammonium nitrification was studied for a SBR feactor with unfixed and fixed oxygen supply rates.Experimental results showed that oxygen supply models have significant efects on the nitrification ability and product as well as the composition of the sludge of SBR for high ammonoum nitrification.Ammonium and nitrite oxidations were taking place simultaneously with unfixed oxygen supply model but seqentially with fixed oxygen supply model.Ammonium oxidizers developed an ability to endure the fluctuation of DO and nitrite oxidizers did not.Extensive starvation under high DO played a critical role in ammonium oxidation under following low DO.

采用非固定氧供给模式和固定氧供给模式对序批式活性污泥反应器的硝化性能进行了研究。结果表明供氧模式对序批式活性污泥反应器的硝化能力、硝化产物和污泥组成有重要影响。在非固定氧供给模式下,亚硝酸化和硝酸化同时进行,最终反应产物为硝酸盐。在固定氧供给模式下,亚硝酸化和硝酸化顺序发生,如果反应时间不足,出流中将含有大量亚硝酸盐。亚硝酸菌具有碳氧化菌的饱食饥饿(feastfamine)能力;而硝酸菌则没有。饥饿对亚硝酸菌在低氧下的氧化起着关键作用。

 
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