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nitrification rate     
相关语句
  硝化速率
     Under the SRT of 5d, rather higher nitrification rate of 8.8mg NH4+-N/L.
     在5d泥龄下,间歇曝气系统的硝化速率和NO_2~-累积率分别达到8.8mg NH_4~+-N/L.
短句来源
     When the ALK/N=38.39(pH=8.7), the nitrification rate achieved the maximum value.
     Alk/N=38.39(此时pH=8.7)时,低浓度氨氮硝化速率接近最大值,充足的碱度有利于低浓度氨氮的彻底硝化;
短句来源
     According to the kinetic analysis of nitrification anddenitrification, there is a point at which nitrification rate is equal to denitrification rate of 4.7mg/(Lh) when DO is about0.14mg/L, The ralated kinetics parameters are kN =0.37mg/L for nitrification and kD=0.48mg/L for denitrification.
     硝化及反硝化的动力学分析表明,在溶解氧浓度为0.14mg/L左右时会出现硝化速率和反硝化速率相等的同步硝化反硝化现象,其速率为4.7mg/(Lh),硝化反应kN=0.37mg/L; 反硝化反应kD=0.48mg/L.
短句来源
     3. In dynamic experiments, maximum specific nitrification rate (SAUR) of 4.55 NH3-N/gMLVSS ' h and maximum specific denitrification rate (SNUR) of 19.68 NO3-N/gMLVSS ' h ,which have been compared with SAUR and SNUR values by nitrogen balance calculation, were obtained, and maximum specific oxygen uptake rate (SOUR) of 75.7mgO2/gMLVSS h was observed.
     3.通过静态试验测得的污泥最大比反硝化速率为19.68 NO_3-N/gMLVSS·h,最大比硝化速率为4.55mgNH_3-N/gMLVSS·h,最大比耗氧速率为75.7mgO_2/gMLVSS·h。
短句来源
     Under the conditions of ammonia concentration ≤500 mg/L,99% NH~+_4-N conversion rate could be achieved and biomass in the reactor changed little. The specific nitrification rate increased from 0.2 kg/(kg·d) to 0.52 kg/(kg·d).
     结果表明,在处理NH4+-N≤500 mg/L的废水时,氨氮转化率可达99%且反应器内微生物增长缓慢,比硝化速率从0.2kg/(kg.d)升至0.52 kg/(kg.d);
短句来源
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  硝化速度
     The removal rate of NH_3 is more than 92% and the nitrification rate of immobilized beads is more than 0. 63g N/kg immobilized beads(wet)·d,which is much higher than other deodorization techniques such as soil or biofilm treatment.
     其气相NH3去除率在92%以上,固定化生物颗粒的硝化速度大于0.63gN/kg固定化湿颗粒·d,远高于土壤及生物膜NH3气脱臭法。
短句来源
     The total decay rate constant, KT, and nitrification rate constant, KN of ammonia nitrogen, and temperature coefficient,θ were obtained through simulation experiment and field sample determination.
     通过实验室模拟试验和野外现场水团追踪试验求得氨氮在沱江水中的总消失速度常数k_T、硝化速度常数k_N、温度校正系数θ以及氨氮的耗氧系数f_n。
短句来源
     The total decay rate constant kT, nitrification rate constant, kNof ammonia nitrogen and temperature coefficient θ we rse obtained through simulation experiments and field sample determinationn.
     通过实验室模拟试验野外现场水团追踪试验求得氨氮在沱江水体中的总消失速度常数KT,硝化速度常数KJ温度校正系数θ以及氨氮的耗氧系数。
短句来源
  硝化率
     (2) The research results of domestic wastewater show that when HRT is 24h and temperature is between 20 to 24 degrees centigrade, the COD removal efficiency is about 90%, nitrification rate and TN removal efficiency reach 85% and 70%. The effluent concentration of NOa-N and NO2-N are about 15mg/L and Img/L respectively.
     (2)用反应器处理实际生活污水,当水温为20~24℃,水力停留时间HRT=24h时,反应器对COD的平均去除率为90%,硝化率和TN的去除率分别达到85%和70%,出水NO_3-N和NO_2-N的平均浓度分别为15mg/L和1mg/L。
短句来源
     Results showed that removal efficiency of organics was above 97%, nitrification rate and TN removal efficiency reached 92% and 82% when HRT was 24h.
     结果表明,该一体化反应器在水力停留时间 HRT=24h时,COD的去除率达到 97%以上,硝化率和 TN的去除率分别达到92%和82%。
短句来源
     Under the condition of medium loading of BOD 1.0kg/(m3·d) and TN 0.19kg/(m3·d) respectively, the nitrification rate after reactor-comparting was enhanced 33%.
     结果表明,在BOD、TN负荷分别为1.0、0.19kg/(m3·d)的中等负荷条件下,反应器分区后硝化率提高33%.
短句来源
     Furthermore,the biofilm nitrifying reactor with carbon fiber as carrier operates steadily during the operating period (nitrification rate approaches to 100%).
     此外,以碳纤维为填料的生物膜硝化池在整个运行过程中效果很稳定(硝化率趋于100%)。
短句来源
     When the partitional reactor operating at high TN loading of 0.26kg/(m3·d), its nitrification rate declined due to decrease of nitrifying bacterium activity; while operating at low loading of 0.08kg/(m3·d), the too low NH4+-N concentration of rear-area limited the exertion of nitrification ability; therefore, the comparting reactor should be operated under medium loading.
     分区式反应器在0.26kg/(m3·d)的高TN负荷条件下运行时,由于硝化细菌活性降低导致硝化率降低,而在0.08kg/(m3·d)的低负荷条件下运行时,后区段过低的氨氮浓度限制了硝化能力的发挥,因此分区式反应器宜在中等负荷下运行.
短句来源
  硝化反应速率
     Stable and high COD removal efficiency reached to 90%~95% and the specific nitrification rate at 30℃ was 0.3? kg(NH_4-N)/(kg(MLSS)·d). Ammonia, nitrate and nitrite in the effluent were reduced to detection level.
     采用该工艺处理石化废水 ,COD去除率达到 90 %~ 95 % ,3 0℃时的比硝化反应速率达到 0 3kg(NH4 N) (kg(MLSS)·d) ,出水已检测不出氨氮和硝态氮
短句来源
     The experiment results show that when alkalinity is in excess and there is no organic load, the nitrification rate can be determined either by the ammonium concentration or by the oxygen concentration.
     研究表明 :在碱度过剩且不存在有机负荷的条件下 ,硝化反应速率或是由氧的浓度决定或是由氨氮的浓度决定。
短句来源
     We have found that the oxygen concentration imposes a great influence on the nitrification rate when oxygen becomes a rate limiting factor. When the oxygen concentration is about 4.5mg/l, the nitrification rate can reach at 240gNOx N/m 3·d.
     当氧的浓度为硝化反应限速因素时 ,氧的浓度对硝化反应速率有很大影响 ,当氧的浓度达到 4 .5 mg/ l时 ,硝化反应速率可达到 2 4 0 g NOx- N/ m3· d
短句来源
     As compared to SBR,COD degradation rate and nitrification rate in TSSBR were increased obviously. COD removal efficiency was increased from 84% to 93% as compared to SBR,but denitrification rate of two processes was almost same.
     TSSBR与传统SBR工艺相比,COD降解速率和硝化反应速率明显提高,COD去除率由84%提高到93%,2种工艺的反硝化速率没有明显差别。
短句来源
     TSSBR avoided the inhibition of the high organic loading to nitrification and nitrification rate was two times of that in SBR under the high influent COD.
     在原水COD浓度较高的情况下,TSSBR可有效克服高COD浓度对硝化反应的抑制,硝化反应速率是传统SBR的2倍。
短句来源

 

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      nitrification rate
    At normal operation, the nitrification rate obtained from the system was in the range of 0.14-0.87 gNH3-N/m2d and the denitrification rate was 0.04 gNO3-N/m2d.
          
    The effect of monolerpenes on nitrification rate and growth of Nitrosomonas europaea was examined in whole-cell pure culture experiments using the five most abundant monoterpenes in coastal redwood needles.
          
    The results indicated that aqueous extracts and residues of roots and shoots of all test cultivars significantly reduced the nitrification rate in soil.
          
    Although simulated nitrification showed a stronger relationship with measured streamflow NO3- flux than did N mineralization, nitrification rate depended upon availability of soil ammonium supplied from N mineralization.
          
    Nitrification rate and percent nitrification were highest at Sites 3 and 4.
          
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    The properties of fertilizer appeared under the interaction behaviors between nitrogen fertilizer applied in soil and components of soil such as adsorption by soil, leaching and volatilization from soil as well as nitrification and denitrification of nitrogen fertilizer are regarded as its agrochemical properties.Although ammonium bicarbonate is easy to decompose and volatilize and inconvenient to store, transport and apply, laboratory simulating experiments have showed that ammonium bicarbonate is more easily...

    The properties of fertilizer appeared under the interaction behaviors between nitrogen fertilizer applied in soil and components of soil such as adsorption by soil, leaching and volatilization from soil as well as nitrification and denitrification of nitrogen fertilizer are regarded as its agrochemical properties.Although ammonium bicarbonate is easy to decompose and volatilize and inconvenient to store, transport and apply, laboratory simulating experiments have showed that ammonium bicarbonate is more easily adsorbed by soil, less leached from soil, as compared with ammonium sulphate and urea; and its volatilization sharply decreases after incorporating with soil; only the rate of nitrification is similar to that of ammonium sulphate and urea. There fore, if the method of deep application is adopted, its effect on crops in fields can also be similar to that of ammonium sulphate or urea.The volatilization process of ammonium bicarbonate, ammonium sulphate and urea can be simulated by power regression equation Y=Ax~b, and the correlation between the initial volatilization amount (mgN/h) and regression constant A is significant. Their nitrification process on different soils can be simulated by exponential equation Y=Ae~(bx), their initial nitrification rate (%) and regression constants A and B are approximate on the same soil but very different on different soils, which indicates that nitrification rate of nitrogen fertilizer after it being applied in soil depends mainly on the soil properties.

    氮肥入土后与土壤各组分相互作用过程中所表现的性质,如被土壤吸附,经受淋失,挥发,硝化和反硝化等,都是它的农业化学性质。碳酸氢铵虽然易于分解挥发,贮运施用不便,但室内模拟试验证实,碳铵与硫铵及尿素相比,易被土壤吸附,不易遭受淋失,入土后挥发锐减,硝化速率则相似。故只要因势利导,采用深施方法,碳铵的田间肥效可相似于其他氮肥。碳铵、硫铵和尿素在不同土壤上的挥发历程可用乘方回归方程y=Ax~b模拟,初始挥发量(毫克N/小时)和回归常数A的相关达显著平准;在不同土壤上的硝化历程,可用指数回归方程y=Ac~(B)x模拟,三种氮肥在同一土壤上的初始硝化%和回归常数A,B值均极近似,但在不同土壤上的差异较大,说明氮肥入土后的硝化速率主要取决于土壤性质。

    Nitrogenous pollutants transformation and temperature effect on the process in Tuojiang River were studied. The total decay rate constant, KT, and nitrification rate constant, KN of ammonia nitrogen, and temperature coefficient,θ were obtained through simulation experiment and field sample determination. A mathematical model with modified parameter estimation procedure for nitrogenous pollutants assimulation capacity was developed and used to calculate loading capacity of Tuojiang River for nitrogenous...

    Nitrogenous pollutants transformation and temperature effect on the process in Tuojiang River were studied. The total decay rate constant, KT, and nitrification rate constant, KN of ammonia nitrogen, and temperature coefficient,θ were obtained through simulation experiment and field sample determination. A mathematical model with modified parameter estimation procedure for nitrogenous pollutants assimulation capacity was developed and used to calculate loading capacity of Tuojiang River for nitrogenous pollutants

    本文研究氮污染物在沱江水体中的转化规律及其主要的影响因素。通过实验室模拟试验和野外现场水团追踪试验求得氨氮在沱江水中的总消失速度常数k_T、硝化速度常数k_N、温度校正系数θ以及氨氮的耗氧系数f_n。在参数计算方法上较前人有所改进。建立了计算沱江氮污染容量的数学模式,并用该模式估算了沱江在不同流量和不同水温条件下所能容纳氮污染物的负荷量。

    Nitrogenous pollants transformation and principal effect on the process inTuojiang River were studied .The total decay rate constant kT, nitrification rate constant, kNof ammonia nitrogen and temperature coefficient θ we rse obtained through simulation experiments and field sample determinationn. A mathematical model with modified parameter estimation procedure for citrogenous pollutants assimulation capacity was set up and can be used to alculate loading capacity of Tuojiang River for nitrogenous pollutants....

    Nitrogenous pollants transformation and principal effect on the process inTuojiang River were studied .The total decay rate constant kT, nitrification rate constant, kNof ammonia nitrogen and temperature coefficient θ we rse obtained through simulation experiments and field sample determinationn. A mathematical model with modified parameter estimation procedure for citrogenous pollutants assimulation capacity was set up and can be used to alculate loading capacity of Tuojiang River for nitrogenous pollutants.

    本文研究沱江氮污染物转化规律及主要影响因素。通过实验室模拟试验野外现场水团追踪试验求得氨氮在沱江水体中的总消失速度常数KT,硝化速度常数KJ温度校正系数θ以及氨氮的耗氧系数。建立计算沱江氮污染容量的数学模式,从而可算沱江不同流量和不同水温条件下的氮污染物容量。

     
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