软锰矿粒子电极处理SMP模拟废水实验研究

将软锰矿粒子电极引入三维电极系统处理钻井废水中难降解有机物。考察电解质和相关运行条件对CODCr去除率和活性氯生成量的影响。实验表明:Na Cl作支持电解质时CODCr去除率明显优于Na2SO4,电解产生的活性氯能进一步促进有机物的氧化降解。软锰矿粒子电极能显著提高活性氯的生成量和电流效率。以Na Cl为电解质,在电导率3600μs/cm、p H值7.0、粒子电极投加量80 g、电流强度0.9 A、曝气600 m L/min、电解40 min的实验条件下电解SMP模拟废水,CODCr去除率可达61.50%。     

三维电极电化学法处理茜素红模拟染料废水的研究

用三维电极电化学方法对茜素红模拟染料废水进行降解实验．考察反应器电压、电解时间．支持电解质浓度及废水pH值等因素对降解效果的影响。实验结果表明,以不锈钢作阳极,多孔石墨作阴极,活性碳颗粒作粒电极,在槽电压40V,支持电解质NaCl浓度2g／L．pH值5．1的条件下,初始浓度为300mg／L的茜素虹模拟染料废水电解40min后,脱色率达96％以上,COD去除率达88％以上。     

三维电极-电Fenton法处理孔雀石绿染料废水研究

目的研究三维电极-电Fenton法降解孔雀石绿废水的处理效果及各因素对废水色度和COD去除率的影响.方法控制反应时间、初始pH值、电解质种类和质量浓度、电解电压、极板间距和曝气强度,分析色度和COD去除效果.结果单因素试验结果表明:色度为500~600倍,COD质量浓度为500~600 mg/L的孔雀石绿废水在pH为3,电解质Na2SO4质量浓度为5 g/L,电压16 V,极板间距9 cm,曝气强度为0.8 L/min的条件下反应120 min,脱色率和COD去除率分别达到了91.97%和70.61%,出水色度为40.67倍,出水COD质量浓度为149.69 mg/L.满足《纺织染整工业水污染物排放标准》(GB4287—2012)间接排放标准.结论三维电极-电Fenton法能够有效处理孔雀石绿染料废水,对废水的色度和COD均有较高的去除率.     

电解法应用于染料废水的预处理研究

采用电解法对染料生产厂五种废水的脱色和化学需氧量ρCOD的去除效果进行了研究，分别探讨了电解持续时间、电流大小、pH值、阳极电流密度以及极板间距等对废水的色度及ρCOD去除效果的影响．结果表明，电解法对上海市某化工厂各类染料废水的预处理能取得很好的效果，脱色率均达到90％以上，且电解的时间越长，色度去除率越高,在酸性条件下，色度和ρCOD的处理效果更好，且通过试验找到了最佳极板间距为2cm．阳极电流密度越小，处理效果越好．     

离子膜电解处理活性染料染色废水原液工艺研究

活性染料是目前按应用分类产、销量最大的染料,其染色后的废水也是公认最难处理的废水.离子膜电解法(I-EME)具有清洁、环保、高效等诸多优点,已广泛用于难降解废水的处理.本文采用离子膜电解法处理活性艳红K-2BP染料染色废水原液,在不改变实验装置,不对废水作任何处理的前提下,得出最佳工艺为电流密度40mA/cm2,电解时间15min,极距4cm,电解温度30℃左右室温,在此条件下,废水脱色率92.6%,COD去除率89.5%.     

恒电流下原位电生成活性氯氧化降解蒽醌染料

利用形稳阳极原位电生成活性氯,以活性艳蓝KN—R的两个特征波长（592nm和255nm）处吸光度为主要指标,对该染料的脱色及其母体结构氧化降解进行了对比分析．在15A／m^2电流密度、0．1mol／LNa2SO4、0．2mol／L NaCl、0．1mmol／L活性艳蓝KN—R、初始pH=6．4、T=303K的条件下,经4h的电解,可使染料100％脱色,45％左右的染料母体结构被破坏,但电解液的TOC变化不大．实验结果表明,电流密度、氯化钠浓度、染料浓度、温度对染料的脱色及其母体结构氧化降解有较强的影响;染料脱色及其母体结构氧化降解过程遵循准一级动力学．     

电催化氧化法降解甲基橙染料的研究

采用不锈钢为阳极,钛网为阴极,以电催化氧化法降解甲基橙溶液,得到了较好的降解效果.研究了在无隔膜电解槽内外加电压、添加剂的量、电解质(Na2SO4)的量、溶液的pH值以及电解时间等因素对甲基橙降解效果的影响.研究表明,在外加电压为8 V,电解质硫酸钠的加入量为1.0 g,添加剂的加入量为0.4 g,溶液pH为2的条件下,降解100 mg/L的甲基橙溶液80 m in,甲基橙的降解率可达93.1%,COD可降至90 mg/L.     

改性粉煤灰对酸性黑10B的脱色效果

以H2SO4为改性剂对粉煤灰进行活化处理,用活化后的粉煤灰对酸性黑10B水溶性模拟染料废水进行脱色处理.研究了各种反应条件对脱色效果的影响,并对活化机理和吸附机理进行了探讨.结果表明:粉煤灰经质量分数为50%的H2SO4活化后,在染料的初始质量浓度为10 mg/L,灰水质量浓度为12.5 g/L,pH=1～5,反应时间为120 min的条件下,脱色率可达94%以上.说明粉煤灰经改性后,对染料废水有很好的脱色效果,在造纸废水、纺织印染废水的处理上有广泛的应用前景.     

电催化氧化降解活性红紫X-2R染料废水的研究

采用复极性三维三相电极反应装置对活性红紫X-2R染料进行了电催化氧化降解试验,分析了外加电压、主电极极间距、电流密度、初始pH值、曝气量等因素对降解效果的影响,确定了最佳工艺条件:外加电压30 V,电流密度28 mA/cm2,主电极极间距5 cm,初始pH值6,曝气量3 L/min,初始质量浓度为400 mg/L的染料废水经50 min电催化氧化后,脱色率与COD的去除率分别达99.1%和93.5%.     

电催化氧化降解活性红紫X-2R染料废水的研究

采用复极性三维三相电极反应装置对活性红紫X-2R染料进行了电催化氧化降解试验,分析了外加电压、主电极极间距、电流密度、初始pH值、曝气量等因素对降解效果的影响,确定了最佳工艺条件：外加电压30 V,电流密度28 mA/cm2,主电极极间距5 cm,初始pH值6,曝气量3 L/min,初始质量浓度为400 mg/L的染料废水经50 min电催化氧化后,脱色率与COD的去除率分别达99.1%和93.5%.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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