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   arsenic removal 的翻译结果: 查询用时:0.012秒
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arsenic removal     
相关语句
  除砷
     The arsenic removal capacity reaches to 1.4-2.0mgAs~(+5)/gAl_2O_3, when the pH of raw water (containing 0.75mg/L As) is adjusted to the range of 6.0-6.5.The cost of chemicals used is RMB 0.221/m~3 of treated water.
     含砷0.75mg/L左右的原水将pH调至6.0~6.5的条件下,除砷容量为1.4~2.0mg/g Al_2O_3,处理1m~3水的化学品费用为0.221元.
短句来源
     The arsenic removal capacity reaches to 1.4-2.0mgAs~(+5)/gAl_2O_3, when the pH of raw water (containing 0.75mg/L As)is adjusted to the range of 6.0-6.5.The cost of chemicals used is RMB 0.221/m~3 of treated water.
     含砷0.75mg/L左右的原水将pH调至6.0~6.5的条件下,除砷容量为1.4~2.0mg/g Al_2O_3,处理1m3水的化学品费用为0.221元。
短句来源
     It was shown that the arsenic removal efficiency of PSFAC was 90.5%while pH is of 7.0,and the dosag of 120 mg/L,and molar ratio(Fe~(3+)+Al~(2+))/SiO_2 of 5∶1,and B of 0.1.The effluent of actual sample can meet the Chinese effluent discharge standard.
     实验结果表明(Fe+Al)/SiO2=5∶1,B=0.1时,在pH值7.0,投加量为120 mg/L的条件下,聚硅酸氯化铝铁除砷率达90.5%。
短句来源
     Average arsenic level in effluent are 0.014-0.028mg/L. Average efficiency of arsenic removal are 94.7-95.9%.
     进水平均砷浓度为0.34~0.53mg/L,出水的平均砷浓度为0.014~0.028mg/L,平均除砷效率为94.7~95.9%。
短句来源
     Study of Arsenic Removal from Drinking Water by Coagulation-Sedimentation Method
     混凝沉淀法饮水除砷研究
短句来源
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  脱砷
     New Process of Purification arsenic Removal of Copper Electrolyte
     铜电解液净化脱砷新工艺
短句来源
     New technology for Arsenic Removal in Copper Electrolyte Purification
     铜电解液净化脱砷新工艺
短句来源
     The de arsenic removal rate reached 99% and the arsenic tolerance capacity reached 7.0% for Daqing straight run naphtha under mild operating conditions, such as a pressure of 1.6 MPa, a temperature range of 260-280 ℃, a volume space velocity range of 10-15 h -1 and a hydrogen/oil volume ratio of 100. RAs 20 can effectively protect the down stream catalyst and meet the requirement of long term running.
     大庆直馏汽油在反应压力 1.6MPa、反应温度 2 6 0~ 2 80℃、体积空速10~ 15h-1、氢油体积比 10 0的缓和条件下 ,脱砷率达到 99% ,对下游主催化剂可起到有效的保护作用。 催速容砷试验结果表明 ,RAs 2 0脱砷剂容砷量达到 7.0 % ,可满足工业上长周期运转的需要。
短句来源
     The content of arsenic in the tin concentrate is about 0.5%~5.5%, pre-treatment for arsenic removal by the roasting process is adopted commonly. However the high-arsenic dust from the smelting procedure is dealt with by the electric- heating kiln or hydrometallurgical process.
     锡精矿含砷0.5%~5.5%,一般在熔炼前进行焙烧脱砷,而冶炼过程中产生的高砷烟尘则采用电热回转窑焙烧法或湿法脱砷
短句来源
     De-arsenic agent RAs-2(B) has a high activity and capacity for arsenic removal. The de-arsenicrate can be high up to 99 % under the reaction conditions of pressure at 1. 2 MPa, temp.
     RAs-2(B)脱砷剂在压力1.2MPa、温度280℃、空速10~20h-1的条件下脱砷率可超过99%。
短句来源
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  砷的脱除
     Meanwhile, the gold leaching recovery was directly related to arsenic removal level, and better result can be achieved by using some oxidizing agent during cyanide leaching after alkaline leaching pretreatment.
     常温条件下,碱浸除砷预处理氰化浸金过程,金浸出率与砷脱除率呈正相关关系,提高温度将改变这种相互关系,大大降低砷的脱除率,并导致金无法浸出;
短句来源
     Arsenic Removal and Recovery in Heavy Metals Smelting Process
     重有色金属冶炼中砷的脱除与回收
短句来源
     The arsenic removal rate in each stage of the production of high-purity germanium dioxide is approached in the article. It was indicated that two ways of reducing the arsenic content in the germanium dioxide were to control the arsenic content in the raw germanium tetrachloride and to improve the air quality in the spaces of hydrolization.
     研究在高纯二氧化锗生产过程各工序中砷的脱除率 ,指出控制粗四氧化锗中砷含量和提高水解工序岗位空气质量是提高产品含砷合格率的途径
短句来源
  砷去除
     The results indicate that on better process conditions,arsenic removal rate can be up to 99.1%,so the the method can prevent AsH 3 gas efficiently.
     研究结果表明 :在较佳的工艺条件下 ,砷去除率≥99 1% ,有效防止了AsH3气体污染 ;
短句来源
     The results indicate that on better process conditions,arsenic removal ratio can be up to 99.1%, that the method can result relatively lower loss of indium and that it will not bring about second pollution.
     研究结果表明 :在较佳的工艺条件下 ,砷去除率达 99.1% ,同时铟损失少 ,无二次污染 .
短句来源
     As stated above, when air oxidation and ferric salt were applied in experiments, the arsenic removal efficiency was improved and pH played an important role, the reasons of which were further analyzed.
     笔者分析了曝气氧化和添加铁盐使砷去除率提高的原因,及pH值在去除砷过程中的重要作用。
短句来源
     that on better process conditions, the arsenic removal ratio can be up to 99.1%, and the purity of the arsenic -removal dreg is high with main content As;
     在较佳的工艺条件下,砷去除率达99.1%;
短句来源
     The preparation method is simple and innovative. The adsorbent has good future applying for the arsenic removal from groundwater and drinking water.
     吸附剂制备方法简单,新颖,对地下水和饮用水砷去除具有较好的应用前景.
短句来源
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  arsenic removal
The extent of sulfur oxidation for optimum arsenic removal is around 70 pct.
      
Arsenic removal from the concentrates was generally good, but it was affected by the extent of oxidation and the initial concentration in the concentrate.
      
The arsenic concentration within the particles decreased with the increase of temperature, suggesting temperature dependence on arsenic removal from the lattice of cobaltite.
      
Adsorption filtration is an efficient method of arsenic removal.
      
The basic physico-chemical parameters are set for arsenic removal by polystyrene modified by polymer polyHIPE granules, calcium alginate granules saturated (coated) with iron hydroxide.
      
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The state of arsenic and antimony in the copper electrolyte during refining is analysed with the help of potential -pH diagrams for the As-H_2O and Sb-H_2O systems. It shows that more than 95% of the As (Ⅴ) is in the form of undissociative H_3AsO_4, less than 5% As (Ⅲ) is mainly in the form of AsO+ and HAsO_2 while the concentration of the former is about double of the latter. The amount of Sb(Ⅴ) in the electrolyte is more than that of Sb(Ⅲ). The Sb (Ⅴ) is mainly in the form of SbO_3~- and SbO_2~+,the former...

The state of arsenic and antimony in the copper electrolyte during refining is analysed with the help of potential -pH diagrams for the As-H_2O and Sb-H_2O systems. It shows that more than 95% of the As (Ⅴ) is in the form of undissociative H_3AsO_4, less than 5% As (Ⅲ) is mainly in the form of AsO+ and HAsO_2 while the concentration of the former is about double of the latter. The amount of Sb(Ⅴ) in the electrolyte is more than that of Sb(Ⅲ). The Sb (Ⅴ) is mainly in the form of SbO_3~- and SbO_2~+,the former is about four to five times more than the latter. The Sb (Ⅲ) is mainly in the form of SbO+ and HSbO_2, while the SbO+ content is about thirty times more than that of HSbO_2. The As (Ⅴ) and Sb (Ⅴ) might be reduced to As (Ⅲ) and Sb (Ⅲ) during electrolysis, because their reduction potentials are higher than that of copper. Since the reduction potentials of As (Ⅲ) and Sb (Ⅲ) are more negative than that of Cu, it is possible to prevent the deposition of arsenic and antimony on the cathode by keeping the mass transfer of Cu~(2+) in good condition and confining cathodic current density. In order to refine the crude copper with high arsenic and antimony content by electrolysis, we have developed a new method to remove successfully the arsenic from the electrolyte, i.e. the reduction with sulphur dioxide. With this method the rate of arsenic removal in the electrolyte can be improved from the current 30% to 90%. Besides, the sulphur dioxide reduction method can also be used in many other fields.

本文用As—H_2O系、Sb—H_2O系电位—pH图分析了砷锑在高砷锑铜电解液中存在的形态。电解液中的As(V)、Sb(V)因其电位较铜正,将被还原成As(Ⅲ)和Sb(Ⅲ);而由As(Ⅲ),Sb(Ⅲ)还原为As、Sb的电位比铜负,故只要电解液中的Cu~(2+)具有良好的传质条件,并限制阴极电流密度,As、Sb就不会在阴极上和铜共同析出。为适应高砷锑铜料电解精炼的需要,我们还研究成功了一种电解液脱砷的新方法——SO_2还原法,可使电解净液的脱砷率从传统方法的30%提高至90%以上。

Based on the laboratory tests, this paper discussed the gold extraction by cyanidation from the refractory arsenic gold ore after caustic soda pretreatment for arsenic removal under normal condition, The correlation between gold and arsenic in arsenic bearing gold ore was discussed as well.

本文以小型试验为依据,探讨了在常温常压下碱浸除砷后氰化提金的行为,并分析了含砷金砂石中金砷的相关关系。

The economical comparison was made for the water scrubbing process with sewage disposal, the air cooling-and the indirect cooling-weak acid scrubbing processes with and without arsenic removal and concentration of weak acid. Installation of weak acid recovery system is economically justified for >80kt/a sulphuric acid plants. The air cooling-weak acid scrubbing process is preferred.

根据水洗、酸洗(空冷或间冷)净化流程及后置的污水处理、稀酸脱砷和浓缩装置的经济比较,作者认为≥80kt/a的硫酸装置附设稀酸回收经济效益较好,并推荐空冷稀酸净化流程为优先考虑流程。

 
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