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wastewater     
相关语句
  废水
    The Preparation, Characterization of Modified Titanium Dioxide and Its Application of Photocatalytic Degradation of Dyes Wastewater
    改性二氧化钛的制备、表征及其在光催化处理染料废水中的应用
短句来源
    BCO METHOD FOR DETERMINARION OF COPPER IN WASTEWATER
    废水中铜的BCO光度测定法
短句来源
    Determination of Micro Arsenic in Industrial Waste Water at a Glassy Carbon Electrode by nodic Stripping Voltammetry
    玻璃碳电极阳极溶出伏安法测定工业废水中微量砷
短句来源
    Spectrophotometric Determination of Microamounts Cadmium in Industrial Waste Water With Cadmium
    用镉试剂光度测定工业废水中微量
短句来源
    Spectrophotometrie Determination of Microamounts Cadmium in Industrial Waste Water With Cadmium
    用镉试剂光度测定工业废水中微量
短句来源
更多       
  废水
    The Preparation, Characterization of Modified Titanium Dioxide and Its Application of Photocatalytic Degradation of Dyes Wastewater
    改性二氧化钛的制备、表征及其在光催化处理染料废水中的应用
短句来源
    BCO METHOD FOR DETERMINARION OF COPPER IN WASTEWATER
    废水中铜的BCO光度测定法
短句来源
    Determination of Micro Arsenic in Industrial Waste Water at a Glassy Carbon Electrode by nodic Stripping Voltammetry
    玻璃碳电极阳极溶出伏安法测定工业废水中微量砷
短句来源
    Spectrophotometric Determination of Microamounts Cadmium in Industrial Waste Water With Cadmium
    用镉试剂光度测定工业废水中微量
短句来源
    Spectrophotometrie Determination of Microamounts Cadmium in Industrial Waste Water With Cadmium
    用镉试剂光度测定工业废水中微量
短句来源
更多       
  污水
    Differential Pulse Polarographic Rapid Determination of Microamount of Trinitrotoluene in Waste Water
    差分脉冲极谱快速测定污水中微量三硝基甲苯
短句来源
    Determination of Trace Cyanide Ion in waste water by Using of Ion Selective Electrode
    离子选择电极法测定污水中微量氰根
短句来源
    DETERMINATION OF PHENOL IN WASTE WATER BY UV-DERIVATIVE SPECTROPHOTOMETRY
    紫外导数分光光度法直接测定炼厂污水中的挥发酚
短句来源
    Determination of Trace Arsenic in Waste Water by Synchro-Stopped-Flow FIA with Spectrophotometric Detection
    同步停流FIA分光光度法测定污水中的砷
短句来源
    Determination of the Total Number of Sulfide Ions in the Waste Water from Petroleum Refinery with PH/S Electrodes in Acid Media
    用PH/S电极对在酸性介质中测定炼油污水的硫离子
短句来源
更多       
  污水
    Differential Pulse Polarographic Rapid Determination of Microamount of Trinitrotoluene in Waste Water
    差分脉冲极谱快速测定污水中微量三硝基甲苯
短句来源
    Determination of Trace Cyanide Ion in waste water by Using of Ion Selective Electrode
    离子选择电极法测定污水中微量氰根
短句来源
    DETERMINATION OF PHENOL IN WASTE WATER BY UV-DERIVATIVE SPECTROPHOTOMETRY
    紫外导数分光光度法直接测定炼厂污水中的挥发酚
短句来源
    Determination of Trace Arsenic in Waste Water by Synchro-Stopped-Flow FIA with Spectrophotometric Detection
    同步停流FIA分光光度法测定污水中的砷
短句来源
    Determination of the Total Number of Sulfide Ions in the Waste Water from Petroleum Refinery with PH/S Electrodes in Acid Media
    用PH/S电极对在酸性介质中测定炼油污水的硫离子
短句来源
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      wastewater
    Activated carbon was prepared from the sewage sludge of municipal wastewater treatment plant by chemical activation (activation reagent is ZnCl2) and was used for the adsorption of dye (reactive brilliant red K-2BP).
          
    Geochemistry characteristics and evaluation of the pollution extent of arsenic in wastewater irrigated soil in the North of Tian
          
    The isolation and identification of high efficient biohydrogen production anaerobic bacteria are the important foundations for the fermented biohydrogen production process by anaerobic digesting organic wastewater.
          
    Development and application of some renovated technologies for municipal wastewater treatment in China
          
    Wastewater discharge, especially municipal wastewater discharge, and non-point pollution sources are becoming the major water pollution source and research focus.
          
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    In this paper, the phospho-tungstic acid colorimetric method has been adopted to determine the micro hydroquinone and metol in the wastewater of black-white developer. It was tested to eliminate the inference of sodium sulfite by means of heating break-up of analyses and mercury chloride masking. The conditions were set and the accuracy was examined. This method is adoptable to control the quality of the waste water in the black-white developer drained after being purified with active carbon.

    本文采用磷钨酸比色法测定显影液中微量的米吐尔和对苯二酚,试验了用加热分解法和氯化汞掩蔽法消除亚硫酸钠的干扰,确定了分析条件,并考查了分析的准确度,该方法适用于经活性炭净化后排放的黑白显影废水的水质检查。

    For deterpiination of Cr~(6+) in industrial wastewater, the samples were adjusted to PH 7,The Conditoned wastewater samples were passed though a anion-exchange column (resin 1g,l.5×2cm) at a flow rate of 2-3ml/min. The column was washed with50ml of water, and Cr~(6+) absorbed on it was then eluted with 0.8N sodium chloride and determination by colormetric analysis. Its recovery was nbove 95% and precision was under 3%. without digestion it can get completive separation Cr~(6+)/cr~(3+).

    将工业废水中Cr~(6+)吸附于阴离子树脂上,调节PH值为7,样品以2—3mL/min流速通过树脂,以0.8N的氯化钠淋冼,定量测定Cr~(6+)。回收率在95%以上,精密度在3%以下。同时,可不经硝化就能把Cr~(3+)和Cr~(6+)完全分离。

    For practical purpose,the photooxidative kinetics of TNT aqueous solution has been studied using static and flowing methods in the laboratory.The results of experiments show that.(1) By the action of UV-H2O2,the photooxidative reaction of TNT aqueous solution follows the equation.Inc/c0=-kt(1),where c0 is the con-centration of TNT solution at t=0,c is that of TNT solution at anytime t;t and k being the time elapsed and rate constant of the photooxidative reaction.In terms of(l),the time required for the photooxidized...

    For practical purpose,the photooxidative kinetics of TNT aqueous solution has been studied using static and flowing methods in the laboratory.The results of experiments show that.(1) By the action of UV-H2O2,the photooxidative reaction of TNT aqueous solution follows the equation.Inc/c0=-kt(1),where c0 is the con-centration of TNT solution at t=0,c is that of TNT solution at anytime t;t and k being the time elapsed and rate constant of the photooxidative reaction.In terms of(l),the time required for the photooxidized TNT solution to meet the effluent concentration limit can be estimated.(2) under the same conditions(Intensity of UV,radiation area,film depth and the concentration of H2O2),the photooxidative reaction rate constant of TNT solution k is relaled to the initial concentration of TNT solution by the equation;lnk=-mc0+B(2),where k,c0 are the same as in(1),m and B are empirical constants.By means of(2),the saving of electrical energy due to dilution of TNT solution can be estimated.(3) The rate constant k is independent of temperature.(4) The rate constant k depends upon the initial concentration of H2O2.An optimum Value of the initial concentration of H2O2 exists,and it inc- reases as the concentration of the TNT solution increases.Applicability of the above found macrokinetic regularity of TNT solution in industrial TNT wastewater treatment should await further studyData obtained through liquid chromatography and thin layer chromatography show that the photooxidative process of TNT aqueous solution is rather a complex reaction.Its mechanism is a topic awaiting further study too.

    为了实用的目的,在实验室进行了静态法与流动法研究TNT水溶液光氧化动力学实验。 实验结果表明: (1)TNT水溶液在UV—H_2O_2作用下遵循lnc╱c_0=-kt(1)的动力学方程式,式中c_0为TNT水溶液原始浓度,c为t时浓度,t为光氧化时间,k为光氧化速率常数。用(1)式可估计TNT水溶液光氧化达排放标准所需时间。 (2)光氧化速率常数k,在相同条件(UV光强,光照面积,液层厚度和H_2O_2浓度),与TNT水溶液初浓度有关,遵循lnk=-mc_0+B(2)关系,式中kc_0与(1)式同,m和B为经验常数。用(2)式可估算将TNT水溶液稀释以节约电能的程度。 (3)光氧化速率常数k与温度无关。 (4)速率常数k与H_2O_2初浓度有关,存在一最佳H_2O_2初浓度,而且此最佳值随TNT水溶液原始浓度增加而增大。 由液相、薄层色谱分析知此光氧化过程是一复杂反应,其机理正在进一步研究中,上述宏观动力学规律是否适用于工业废水也待确定。

     
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