油田污水处理现状及发展趋势分析

本文对油田采出水的性质分析、油田污水处理方法简介以及油田污水处理技术的发展趋势三个方面的内容进行了详细的分析和探析，从而详细的分析了我国油田污水的处理现状及发展趋势。     

人工湿地在重庆高寒地区集镇生活污水处理厂的应用

采用预处理+人工湿地处理高寒地区污水工艺,可以保证污水处理出水达《城镇污水处理厂污染物排放标准》(GB18918-2002)一级A排放标准,同时运行成本也低,便于污水处理厂的运行管理。     

混凝/氧化结合处理油田污水探索研究

随着油田开发进程的加快,油田废水日益增多,严重地污染了生态环境。本文以大庆某油田作业污水为研究对象,采用混凝/氧化方法降低污水CODcr值。实验选用硫酸铝和聚合氯化铝（PAC）两种混凝剂与H2O2、KMnO4及Fenton试剂（1000mg/L的双氧水和1634mg/L的硫酸亚铁）三种氧化剂进行组合处理水样,找出一种简单易行、成本低廉的处理工艺。实验结果表明,5000mg/L硫酸铝与Fenton试剂结合,可使CODcr值从3788mg/L降到440mg/L,最终出水可达到《污水综合排放标准》(GB8978—1996)中的三级排放标准。     

A-O法处理海产品加工废水

福建海产品加工排放的生产污水COD:1000～8000mg/L,氨氯:100～500 mg/L,pH:6～9,采用A-O工艺处理后,出水达到污水综合排放标准GB8978-1996中二级排放标准.     

陶瓷膜处理油田采出水初探

油田采出水如直接排放，不仅污染环境，而且会造成大量水资源的浪费，直接回注则会引起一系列问题。陶瓷膜具有耐高温、机械强度高、耐酸碱性、使用寿命长等特点。采用陶瓷膜精细过滤处理油田采出水，可将其完全用于回注。着重讨论几种恢复陶瓷膜通量的方法，将其应用到油田采出水中，取得了较好的效果。     

三次采油污水生化处理研究

实验采用生化法对三次采油污水进行处理。生化处理实验过程中应用了高效降解聚丙烯酰胺菌和烃类氧化菌,有效降低了三次采油污水的聚合物含量、含油量、悬浮物和COD等污染控制指标,处理后的污水达到了油田回注水处理要求和国家污水综合排放标准中的一级排放标准。     

三相催化氧化工艺应用于工业园区污水深度处理

天津市某开发区污水处理厂针对生化二沉池出水COD指标较高难以满足天津市新排放标准的问题,在提标改造工程中采用三相催化氧化工艺作为主体工艺,工程运行效果表明:该工艺处理效果明显,对低浓度难降解COD的去除率达50%以上,出水总磷在0.1 mg/L以下,出水各指标均优于天津市《城镇污水处理厂污染物排放标准》中A标准。     

山西省某医院污水处理工程改造实例

介绍了用接触氧化加二氧化氯消毒法处理医院污水。经过一年多的运行表明出水完全达到DB31／199-1997出水排放标准。     

埋地式悬浮填料SBR法处理小区生活污水

采用埋地式悬浮填料SBR法作为主体工艺处理某小区生活污水。工程实际运行结果表明：该工艺占地省,自动化程度高,运行稳定,抗冲击负荷能力强,出水水质达到《污水综合排放标准》（GB8978-1996）中的一级排放标准。     

钻井岩屑废水处理新技术

石油作为当今世界第一大能源,在人类经济和社会生活的各个方面都发挥着至关重要的作用。以油田钻井废水为研究对象,采用隔油＋破乳＋絮凝沉淀＋生化为主体的工艺对废水进行处理,使得治理后出水满足《天津市污水综合排放标准》（DBl2／356—2008）二级标准。     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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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