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氢氧化钙
相关语句
  calcium hydroxide
    Experimental Study of Operating Parameters of Lime Slaking Process and Dissolution Rate of Calcium Hydroxide
    石灰消化工艺参数及氢氧化钙溶解速率实验研究
短句来源
    (2) Study on simply sedimentation process with only calcium hydroxide added;
    (2)仅投加氢氧化钙的简单沉淀处理含氟废水的研究;
短句来源
    When the dose of calcium hydroxide was 200%, which was the key factor, the treatment was the most efficient.
    当氢氧化钙投加量为200%时的出水效果最好,并且该因素是决定出水效果的关键性因素;
短句来源
    (2) Technologically, it was feasible to treat wastewater with the process of calcium hydroxide + PFC + PAM or calcium hydroxide + Heldy-F+ PAM, and the latter was more efficient.
    (2)氢氧化钙+聚铁+PAM的处理流程和氢氧化钙+Heldy-F+PAM的处理流程在技术上均可行,但是综合经济和最后出水效果上分析比较,后方案更佳;
短句来源
    Calcium hydroxide (Ca(0H)2), poly ferric sulfate(PFS) and poly aluminum chloride(PAC) were adopted as precipitator, and polyacrylamide(PAM) was used as coagulant aids.
    试验中采用氢氧化钙(Ca(OH)_2)、聚合硫酸铁(PFS)和聚合氯化铝(PAC)作为沉淀剂,以聚丙烯酰胺(PAM)作为助凝剂。
短句来源
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  “氢氧化钙”译为未确定词的双语例句
    (4) The fluoric concentration of the effluent was about 5.5mg/L, coagulate sedimentation process could enhance the reduction of the fluoride in the effluent, which was meet the requirement of second-degree standard in 《integrate emission regulations for wastewater(DB31/199-1997)》 .
    (4)经氢氧化钙+Heldy-F+PAM的流程处理后的出水含氟浓度在5.5mg/L左右,化学混凝沉淀法处理含氟废水工艺运行情况稳定,处理效果良好,达到了《上海市污水综合排放标准(DB31/199—1997)》中二级标准的要求。
短句来源
    Polyaluminium sulfate (PAS) was prepared from Al_2(SO_4)_2 and Ca(OH)_2 (?) t temperature of 70℃ and with reaction time of 8~12h. The product PAS has basicity 45%, aluminium content 11% (as Al_2O_3) and pH4.5. By adding organic acid into PAS as stabilizer, it possesses good stability.
    在反应温度70℃、反应时间8~12h条件下,以硫酸铝、氢氧化钙等物质为原料合成了聚合硫酸铝(PAS),碱化度为45%,含铝量为11%(以Al_2O_3计),pH值为4.5。
短句来源
    PO 3- 4 P and Ca 2+ for filtrate were measured. It was found by the experiment that pH 6.5~7 was the best. Final wastewater was neutralized,had the COD concentration of 387mg/l,NH4 + N concentration of 15.6mg/l,PO4 3- P concentration of 25mg/l,Ca 2+ concentration of 746mg/l,and could be treated by biological treatment easily.
    所排废液 p H中性 ,COD387mg/ l,NH4 + - N15 .6 mg/ l,PO4 3- - P2 5 mg/ l,Ca2 + 74 6 mg/ l,不再是饱和氢氧化钙溶液 ,不再具有高碱、高钙和高悬浮有机物特性 ,为后续的生物处理铺平了道路。
短句来源
    It is found that the removal ratio of silicon increases with the increment of the Ca(OH)2. The removal ratio of silicon increases to 98.8% when the mass ratio of Ca(OH)2/SiO32- is increasing to 201. Similarly,the removal ratio of silicon increases with the increment of the MgO.
    实验表明,随着氢氧化钙投加量的增加,硅的去除率增加,当m〔Ca(OH)2〕 m(SiO32-)达到20 1时,硅的去除率可达98.8%。
短句来源
    Calcium peroxide can be prepared from ammonium chloride and hydrogen peroxide with mass ratio 10/130 and stabilizing agents Ⅰ A and Ⅱ B.The product yield is 35.9% and its purity is 72.3%. The product was used in removing heavy metal ions from mechanical industry wastewater.
    在氯化铵与过氧化氢质量比为 10 / 130、采用稳定剂ⅠA和稳定剂ⅡB的条件下 ,使氢氧化钙与过氧化氢反应合成过氧化钙 ,其收率为35 9% ,纯度为 72 3%。
短句来源
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  calcium hydroxide
Processes in a Nickel-Zinc Battery with a Negative Electrode Containing a Calcium Hydroxide Additive
      
Reaction of Calcium Hydroxide with the Oxide-Sulfate Fraction of Lead Battery Scrap
      
The reaction of oxide-sulfate fraction of lead battery scrap with an aqueous suspension of calcium hydroxide was studied experimentally.
      
Good fastness properties were also obtained using a post-mordanted silk with calcium hydroxide.
      
After treatment at pH 7.0 and 9.0 with calcium hydroxide, the modified silicas were characterised by physical and chemical analysis.
      
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A Pressure leaching technology for recovery of lithium from beta- spodumene using sodium sulfate as reactant in the medium of calcium hydroxide is in- vestigated. A quadratic regressive model with the leaching rate of lithium and the four factors (temperature, reaction time, percentage of stoichiometric Na_2SO~4 and concentration of calcium hydroxide) has been established by means of a saturated approximate D- optimum design method. The regressive values and their square deviations are calculated. The regressive...

A Pressure leaching technology for recovery of lithium from beta- spodumene using sodium sulfate as reactant in the medium of calcium hydroxide is in- vestigated. A quadratic regressive model with the leaching rate of lithium and the four factors (temperature, reaction time, percentage of stoichiometric Na_2SO~4 and concentration of calcium hydroxide) has been established by means of a saturated approximate D- optimum design method. The regressive values and their square deviations are calculated. The regressive model proves to be reliable to a great extent in experiments. Some information about the technology is obtained from the regressive model. Tem- perature is the primary factor; larger percentage of stoichiometric Na_2SO~4 is necessary for lithium's complete dissolution; under some proper conditions the leaching rate of lithium can be up to 96%. This new technology is effective and applicable.

本文研究了在氢氧化钙介质中从β-锂辉石提取锂的硫酸钠压煮过程。在温度220—260℃,浸出时间120—240min,硫酸钠配比2.0—5.0及氢氧化钙浓度1.0—3.0g/L的范围内,用饱和近似D-最优设计方法建立了四元二次回归模型,应用计算机进行参数估计、回归值及其方差的计算。该数模经实验验证其可靠性较好。研究结果表明,温度是最主要的影响因素,高的硫酸钠配比是锂有效溶出的必要条件。在适当的条件下锂的浸出率可达96%以上,为从锂辉石中提锂提供了一种新的有效方法。

Polyaluminium sulfate (PAS) was prepared from Al_2(SO_4)_2 and Ca(OH)_2 (?)t temperature of 70℃ and with reaction time of 8~12h. The product PAS has basicity 45%, aluminium content 11% (as Al_2O_3) and pH4.5. By adding organic acid into PAS as stabilizer, it possesses good stability. The structure, of PAS was studied by IR, NMR and X-ray diffraction techniques. The results indicate that PAS is composed of hydrolysed aluminium complexes of eifferent degrees of polymerization. Sulfate ions improve PAS polymerization....

Polyaluminium sulfate (PAS) was prepared from Al_2(SO_4)_2 and Ca(OH)_2 (?)t temperature of 70℃ and with reaction time of 8~12h. The product PAS has basicity 45%, aluminium content 11% (as Al_2O_3) and pH4.5. By adding organic acid into PAS as stabilizer, it possesses good stability. The structure, of PAS was studied by IR, NMR and X-ray diffraction techniques. The results indicate that PAS is composed of hydrolysed aluminium complexes of eifferent degrees of polymerization. Sulfate ions improve PAS polymerization. PAS shows good performances in low temperature water treatment as flocculant with high removal efficiencies of colored matter, fluorides and turbility. The effluent treated by PAS has low residual aluminium content and high filtration performance.

在反应温度70℃、反应时间8~12h条件下,以硫酸铝、氢氧化钙等物质为原料合成了聚合硫酸铝(PAS),碱化度为45%,含铝量为11%(以Al_2O_3计),pH值为4.5。经加入有机酸作为稳定剂,PAS具有很好的稳定性。经红外光谱,~(27)Al核磁共振谱及X-射线衍射分析,PAS为不同聚合度的铝羟基配合物,具有较好絮凝性能,尤其具有较好的低温、脱色、去氟和去高浊度的性能,出水可过滤性强。

Water containing different kind of soluble dyestuffs including reactive,acidic,direct or cationic dye was used to simulate wastewater in order to study the behavior of magnesium salts in decolorization process.The experimental results show the efficiency of decolorization is rather high for the anionic dyestuff with the optimum pH 11.5,but not apparent for the cationic calcium hydroxide has synergetic effect with magnesium salts.The mechanism of the decolorization is due to the adsorption of magnesium hydroxide...

Water containing different kind of soluble dyestuffs including reactive,acidic,direct or cationic dye was used to simulate wastewater in order to study the behavior of magnesium salts in decolorization process.The experimental results show the efficiency of decolorization is rather high for the anionic dyestuff with the optimum pH 11.5,but not apparent for the cationic calcium hydroxide has synergetic effect with magnesium salts.The mechanism of the decolorization is due to the adsorption of magnesium hydroxide formed and the data are confirmed with the Langmuir isotherm equation.

将含有各种水溶性染料,包括活性染料、酸性染料、直接染料和阳离子型染料的模拟废水为试验对象,系统地研究了镁盐在染料废水脱色过程中的作用。结果表明,对大多数阴离子型染料,脱色效果均十分显著,而对阳离子型染料效果则不明显,最佳pH值为11.5。氢氧化钙与镁盐处理具有协同效应。脱色作用的机理在于形成的氢氧化镁的吸附作用。试验数据由Langmuir等温方程进一步证实。

 
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