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cod浓度     
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  cod concentration
     Results show that evapotranspiration load of the surface flow reed wetland is 0.9-1.12 m3/(m2·a) and the COD surface load is 0.65-0.786 kg/(m2·a) when the inlet COD concentration of the wastewater is around 800 mg/L.
     结果表明,当进水COD浓度为800mg/L左右时,表面流人工芦苇湿地的蒸散负荷为0.9~1.12m3/(m2.a),COD面积负荷为0.65~0.786kg/(m2.a)。
短句来源
     At the same time,the COD concentration of control column D2 and D3 was dropped from 435mg/L,852mg/L to 295mg/L,596mg/L and the ammonia-N concentration was dropped from 654mg/L,(1?107mg/L) to 469mg/L,783mg/L.
     而继续按厌氧方式运行的垃圾柱D2和D3的渗滤液COD浓度仅分别由435mg/L和852 mg/L下降到295 mg/L和596 mg/L,氨氮浓度由654 mg/L和1 107 mg/L下降到469mg/L和783 mg/L.
短句来源
     The results indicate that the removal of chemical oxygen demand(CODcr) is about 80~94% on the aerobic condition that the pH from 7.5~8.7,the temperature from 25~32 ℃ and inlet COD concentration from 1 700~2 600 mg/L.
     好氧段在pH值为7.5~8.7,温度为25~32℃,进水COD浓度为1 700~2 600 m g/L条件下,COD cr去除率为80%~94%。
短句来源
     The range of i nfluent COD concentration for treatment system was 400—700 mg·L-1, and the op timum influent COD concentration for artificial soil filter was 200—300 mg·L- 1.
     人工土滤床最佳进水COD浓度为200—300mg·L-1,处理系统进水COD浓度为400—700mg·L-1。
短句来源
     When the C/N ratio is 5:1, denitrification velocity was increased with the influent COD concentration, when the influent COD concentration was 300mg/L, the denitrification velocity was 0.032mgNOx/mgVSS·h and 0.031mgNOx/mgVSS·h respectively, while the initial COD concentration was450mg/L, the velocity was 0.082mgNOx/mgVSS-h and 0.063mgNOx/mgVSS-h respectively, and no nitrite was accumulated.
     当C/N比为5:1时,颗粒污泥的反硝化速率又随初始COD的浓度的增大而增大,在初始COD浓度为300mg/L时,反硝化速率为0.032mgNOx/mgVSS·h和0.031mgNOx/mgVSS·h,而在初始COD浓度为450mg/L时分别为0.082mgNOx/mgVSS·h和0.063mgNOx/mgVSS·h,并且无亚硝酸盐积累。
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  cod density
     An Estimation Model of River COD Degradation Coefficient from River Velocity and COD Density.
     由河流流速、COD浓度估计河流COD衰减系数的经验模型
短句来源
     This passage put forward a full set of technology method that can remove zinc ion and reduce COD density for 7-ACA wastewater with high zinc ion and high COD .
     对高锌离子,高COD浓度的7-ACA废水,提出了一套较完整的去除锌离子,降低COD浓度的工艺方法;
短句来源
     And a nonlinear regressive mathematical model is established to relate COD density with velocity.
     同时研究了哈尔滨段水环境的变化以及最主要的污染物COD浓度与流量的非线性回归关系等。
短句来源
     Based on the analysis of the factors affecting river COD degradation coefficient and the systematic data investigation,an estimation model of river COD degradation coefficient from river velocity and COD density has been developed by progressive regression analysis method in this paper. The model reliability has been demonstracted by variance analysis.
     本文在综合分析影响河流COD衰减系数的各要素和系统调查相关资料的基础上,采用逐步回归分析方法得到了一个由河流流速、COD浓度估计河流COD衰减系数的经验模型,并通过方差分析检验了模型的可靠性。
短句来源
  cod level
     Kinetics of COD degradation under lower COD level is also researched and first-order reaction equation Sr=So (1-10 ̄(-k)1 ̄t) is developed on SBR process. The equation is simulated by experimental data and the kinetic constants k1 and So are found.
     还对较低COD浓度下序列间歇式活性污泥法的COD降解过程进行了研究,推导出一级反应动力学关系式Sr=So(1-10 ̄(-k)1 ̄t),并以试验数据进行了拟合,求解出动力学常数k_1和So。
短句来源
     The studies showed that dissolved oxygen and initial carbon source (COD level) are the essential limiting factors as regards nitrate removal from water.
     而不同系统中有机物去除率相差不大(58%~63%)。 随着起始COD浓度的上升,浮萍系统中水体缺氧状况加剧,NO-3-N去除率由21%上升到99%,TN去除率也由23%提高至90%。
短句来源
  concentration of cod
     and the concentration of COD is from 5000mg/L to 2500mg/L;
     COD浓度由5000mg/L左右下降至2500mg/L左右;
短句来源
     When the concentration of COD is in a range of 582.2 ~ 1 665.7 mg/L and SS is in a range of 106-915 mg/L, the removal rate of COD is 62.8% ~ 86.9%, and SS is 61.3% ~ 88.6% .
     当进水COD浓度为582.2~1665.7mg/L、进水SS浓度为106~915mg/L时,COD去除率为 62.8%~86.9%,SS去除率为61.3%~88.6%。
短句来源
     When the HRT is 84 hours, the average influent and effluent concentration of COD is 5 435.7mg/L and 369.3 mg/L, respectively, the removal rate of COD is 93.17%;
     在水里停留时间为84h,进水COD浓度平均值为5435.7mg/L时,出水COD浓度为369.3mg/L,COD去除率为93.17%;
短句来源
     When the concentration of COD,phosphorus and ammonia of influent was 325 mg/L,9.1 mg/L and 65 mg/L respectively,the concentration of ammonia and phosphorus was 3.3 mg/L and 0.17 mg/L. The efficiency of nitrogen and phosphorus removal was 95% and 98%.
     在进水COD浓度为325mg/L,磷浓度为9.1mg/L,氨氮浓度为65mg/L的条件下,出水氨氮浓度和磷浓度分别为3.3mg/L和0.17mg/L,氮和磷的去除率分别为95%和98%.
短句来源
     UASB reactor was used for the erythromycin wastewater treatment,the results showed that: through effective cultivating the anaerobic granular sludge sand controlling the concentration of COD in the influent,erythromycin wastewater could be effectively treated. When the influent COD was 6700-7500mg/L,the effluent COD was 820-1000mg/L,the volumetric COD loading reached to 3-4.5kg COD/(m3·d) and COD removal rate reached 88%.
     利用UASB反应器处理红霉素废水试验运行结果表明:通过控制进水中COD浓度和对厌氧污泥有效的培养驯化,红霉素生产废水可以被有效处理,进水COD为6700-7500mg/L,出水COD为820-1000mg/L,反应器水力停留时间25h,容积负荷达到3-4.5kgCOD/(m3.d),COD去除率达到88%.
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      cod concentration
    The experimental results on the initial field of pollutant indicate that the distribution of Chemical Oxygen Demand (COD) concentration is sensitive to the horizontal eddy diffusivity.
          
    A novel strain V 430 isolated by us has been successfully used to decrease the chemical oxygen demand (COD) concentration of diosgenin wastewater from 20?g l-1 to less than 0.5?g l-1.
          
    The COD concentration varied generally within a narrow range of 1.24-1.60 mg/L in the zone around the river mouth, beyond which it decreased rapidly to 0.20 mg/L.
          
    Good agreement was found between the model prediction and the experimental data from continuous operation [initial chemical oxygen demand (COD) concentration = 29.700 g/l] of the system.
          
    The influent COD concentration was varied in the range of 1500 to 16500?mg/l, at different hydraulic retention times viz 36,48,60 hr.
          
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      cod density
    However, neither SO2 density nor COD density has any measured impact.
          
      cod distribution
    Furthermore, eelgrass and macroalgae were inconsequential to cod distribution.
          
      cod level
    The wastewater COD level was 2000-3000 mg/L in simulation of real textile waste-water.
          
    Furthermore, with the current trend of population growth and agricultural development in this basin, water quality of the Changjiang River, in terms of COD level, is going to deteriorate in the near future.
          
    casei, decrease in effluent's colour of 49 and 52% and reduction in COD level up to 54 and 57% were achieved using bacterial cells in free and immobilised system, respectively, in 5 days batch cultivation.
          
    Adapted cells, pregrown on phenol, required only 65 h to decrease the COD level to below 100 mg/l.
          
    A seen in the Table 3, COD level was varied between 35-60 mg/L in indicating pollution level increases during the summer season.
          
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      其他


    This paper deals with the biochemical treatment of mixed waste water of antibiotic industry. The daily treating capacity is 60 kg COD with a fluidized bed device fitted with an air lift. Powdered coal ash from power plant is used as carrier of microorganism. Packing rate is about 5%. Inlet conc-

    采用设有空气升液器的流化床装置,以日处理60kgCOD的规模,对抗生索工业混合废水进行生化处理试验,用发电厂粉煤灰为微生物的载体,填充率约5%,进水COD浓度为2000mg/l,BOD/COD平均0.5,BOD去除率达97%,去除负荷可达4.5kgCOD/m~3·d或2.6kgBOD/m~3·d。在试验中,创用青霉素的废菌体作为培菌的材料,获得成功。

    This is an experiment applying anaerobic digestion to treatment of monosoduim glutamate waste water.

    本文介绍了采用厌氧发酵法处理味精工业废水的试验情况。 味精废水含有大量的氮、磷等营养物质,其COD浓度高达1.20×10~4~3.00×10~4ppm。笔者利用了经选择后的优良菌种污泥,分阶段进行培养驯化;进而采用传统的试验装置进行了处理负荷、温度、pH值、搅拌次数、污泥沉降体积浓度等条件试验;然后在得出的最佳条件下进行了稳定性试验。 本试验设备简单、操作方便、运行稳定。出水的pH为7.2左右,COD去除率达84~89%,BOD去除率大于90%,每去除一公斤COD可得到沼气约0.47Nm~3,沼气的甲烷含量达73.07%。

    The hydrolysis method of dimethyl-thiophosphoryl Chloride is discussed in this essay. The wastes contain highly concentrated organophosphorus, and are very poisonous. After the treatment, the removability of the total phosphorus and COD value are greater than 90% and 88%,respectively.The ratio of BOD/COD value is raised from 0.123 to 0.45. The pollution is greatly reduced and the CaHPO4 and NaHS can be reclaimed.

    本文详细地论述了化学水解——中和沉淀法处理甲胺磷氯化物废水的中试情况。氯化物废水有机磷浓度高、毒性大。经化学水解和加石灰乳中和沉淀处理后,使废水的总磷和COD浓度分别下降90%和88%以上,大大地减少了污染程度,废水的BOD与COD之比值由原来的0.123上升到0.45,有效地改善了废水的水质。在处理中还可以回收沉淀磷酸钙和硫氢化钠,做到了资源的综合利用。

     
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