A2/O工艺处理焦化废水述评

对A^2／O^2工艺处理焦化废水各构筑物的功能和各构筑物的设计要点进行了述评，分析了A^2／O^2工艺处理焦化废水的缺点，并提出适于处理焦化废水的A^2／O^2工艺。     

焦化废水预处理技术的应用与展望

焦化废水是煤制焦炭，煤气净化及焦化产品回收过程中产生的废水，其成分复杂多变，因此应尽可能在生化处理前降低其浓度或改变其分子结构，提高废水的可生化性。介绍了焦化废水预处理过程中所用的技术和方法，并对焦化废水预处理技术的应用前景进行了展望。     

焦化废水处理工艺浅析

对SBR工艺、硝化和反硝化工艺以及A^2／O^2种处理焦化废水的工艺进行了分析，并结合山西省焦化废水处理工艺运行情况，着重介绍了A^2/O^2处理工艺。     

焦化废水混凝深度处理研究

焦化废水来自于炼焦、煤气净化及焦化产品回收过程中产生的废水,其成分复杂多变,属于难处理的工业废水.经生物处理后的焦化废水很难达到相关标准的要求,因此采用混凝法对焦化废水进一步进行深度处理.实验选择了几种混凝剂如聚合硫酸铁(PFS)、硫酸铝(Al2(SO4)3)及聚丙烯酰胺PAM.通过实验确定各种混凝剂处理焦化废水的最佳pH值、最佳投加量、并确定无机混凝剂、有机絮凝剂配合使用时的最佳实验条件.结果表明:不同混凝剂适用的pH值各不相同,最佳的混凝处理条件是PFS和PAM组合,其能进一步去除色度、CODCr,提高出水水质.     

A2/O法在焦化废水中的应用

介绍了废水的来源及其处理工艺．探讨了A^2／O生物工艺在焦化废水中的应用，针对运行过程中出现的问题，提出了具体改进措施，从而保证了焦化废水达标排放。     

SBR工艺处理焦化废水的可行性研究

针对焦化废水难处理这一难题,引入 SBR工艺（反应期缺氧／好氧相结合）来处理焦化废水,试验结果表明,利用 SBR工艺处理焦化废水是可行的.在试验中还考察了 SBR工艺的运行方式、曝气时间、污泥负荷等对 COD、氨氮的去除效果.结果表明,进水 COD为 650～ 1 900 mg/L,氨氮为 150～ 330 mg/L时 ,去除率分别达到 80％和 70％以上.经技术经济分析,每吨水处理费用约为 1.3元.     

焦化废水深度处理技术研究进展

焦化废水回用于循环冷却水,实现水资源的再利用及焦化废水的零排放,是环境保护和能源节约的要求.综述了焦化废水的来源、特性、深度处理的方法,并对各种方法的优缺点进行了分析.通过焦化废水深度处理技术,解决焦化废水只能用于干熄焦工艺而不能作为循环废水再利用的难题,其社会效益十分显著.     

浅谈生物技术在焦化废水处理中的应用与展望

焦化废水是一种氨氮和有机物浓度较高的工业有机废水,成分复杂,降解困难。该文对生物法处理焦化废水工艺的发展与最新技术进行了回顾与评述,通过比较对生物法处理焦化废水提出了新的展望。     

MBR工艺处理焦化废水的实验研究

通过采用A/O＋MBR工艺处理焦化废水,验证了MBR工艺对于焦化废水处理的稳定性。结果表明,A/O＋MBR处理焦化废水的工艺是可行的。     

碳源和碳氮比对焦化废水反硝化工艺的影响

以上海焦化厂焦化废水为原水，采用软性纤维填料床缺氧反应工艺研究了碳源和碳氢比对焦化废水反硝化工艺的影响。结果表明，投加甲醇这一类易于生物降解的物质对焦化废水进行反硝化时，不仅较大地提高了焦化废水的反硝化速率，而且可使出水ＣＯＤ进一步降低。     

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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