SBR法处理广东地区城市污水实验研究

采用SBR工艺对广州地区城市污水进行实验研究,结果表明：在一个反应装置内,可以达到既能去除有机物又能脱氮除磷的效果,处果后,出水BOD5浓度为5．12－13．62mg/L,去除率达85％－93％;出水COD浓度为10．7－32．2mg/L,去除率达82％－88％;出水NH3－N浓度在2．83－9．83mg/L,去除率达53％087％;出水TP浓度为0．1－0.45mg/L;去除率达85％－99％。     

MBR在石化工业废水深度处理中的应用

采用膜生物反应器(MBR)处理石化工业废水,研究了MBR对CODcr、BOD5、NH3-N、TP及石油类等去除效果.结果表明:MBR对石化工业废水具有良好的稳定处理效果,平均去除率CODcr分别为:86.4%,BOD597.6%,NH3-N 99%,TP 68%,石油类86.7%.MBR出水后CODcr,BOD5,NH3-N,TP,石油类质量浓度平均值分别为35.9,2.9,0.46,0.36,1.35 mg·L-1.研究表明:处理后水质满足国家一级排放标准,MBR可以有效地处理石化工业废水.     

SBR工艺用于生活污水除磷脱氮的试验研究

采用SBR工艺处理有机物含量低、氨氮含量高的城市污水,经过反复试验研究发现,该工艺对生活污水中氮、磷等污染物具有良好的去除效果。试验结果表明,采用试验水样平均进水水质为CODcr=197mg/L;BOD5=95mg/L;SS=203mg/L;NH4+-N=63mg/L;PO-34=1.3mg/L,各项污染物的平均去除率为:CODcr80%,BOD583%,NH4+-N75%,TP61%,处理后出水水质均能达到国家规定的排放标准(GB8978-1996),并提出了该工艺处理低碳高氮城市污水的最佳工艺条件。     

纳米活性碳纤维SBR法脱氮除磷试验

在传统SBR工艺中,应用一种新型的纳米活性碳纤维悬浮填料,考察其对污水的脱氮除磷效果,并确定其最佳运行条件.结果表明:以进水30min—曝气4h—搅拌2h—沉淀1h—出水30min—闲置30min为最佳运行工况,在此工况运行时,进水NH3—N(氨氮)浓度为16.2~31.8 mg/L,出水NH3—N浓度为0.22~1.55 mg/L,NH3—N(氨氮)去除率为98.6%~95.1%;进水TN(总氮)为19.8~39.1mg/L,出水TN为5.94~13.68mg/L,TN去除率为70%~65%;进水TP(总磷)为3.2~4.5 mg/L,出水TP为0.46~1.13 mg/L,TP去除率为85.6%~75%,系统有较好的脱氮除磷效果,同时还存在同步硝化反硝化过程,以及较好的反硝化除磷功能.     

ICEAS反应器处理城市污水的试验研究

对ICEAS工艺的处理效果进行了研究,结果表明,ICEAS既能去除污水中的有机物,还能达到脱氮除磷的效果,出水COD浓度为15 2～42 2mg·L-1,COD总去除率可达80%～88%;出水BOD5浓度为5 12～16 90mg·L-1,总去除率可达85%～93%;出水氨氮浓度为4 5～7 5mg·L-1,总去除率为60%～70%,磷的去除率为60%～75%.     

硅藻土精强化混凝除磷脱氮

采用烧杯试验,进行了硅藻土精及复配硅藻土精强化混凝技术去除模拟洗浴废水中磷、氮的试验,探讨了低碳可持续脱氮除磷技术.试验结果表明,硅藻土强化聚合氯化铝(PAC)后能够提高废水中的总磷(TP)、总氮(TN)和氨氮(NH3-N)的去除率.当PAC投加量为150 mg/L时,通过混凝工艺对TP,TN和NH3-N去除率分别是91%,6%和21%;采用硅藻土强化PAC混凝工艺对TP,TN和NH3-N去除率分别为95%,58%和26%,相对混凝工艺TP,TN和NH3-N分别提高了4%,49%和5%;复配硅藻土强化PAC混凝工艺对TP,TN和NH3-N去除率分别为95%,42%和64%,相对混凝工艺TP,TN和NH3-N提高了4%,36%和43%.在强化工艺中,对TN的去除受原水中NH3-N含量的影响,.采用硅藻土精及复配硅藻土精强化混凝技术,比采用生物技术脱氮除磷,向大气排放二氧化碳等气体量要少.     

IMBR投加活性炭处理屠宰废水实验研究

采用IMBR处理屠宰废水,考察了该工艺对CODcr、BOD5、NH3-N和浊度的去除效果.结果表明:IMBR对CODcr、BOD5和NH3-N的去除效果较好,去除率分别为95.45%、95.9%和89.97%,出水CODcr约为49.7 mg·L-1,NH3-N基本在10 mg·L-1以下,分别达到了<污水综合排放标准>(GB 8978-1996)的二级和一级标准.     

低碳源下序列间歇式活性污泥法中反硝化除磷菌培养及驯化研究

采集某城市污水处理厂的A/O工艺回流活性污泥作为污泥样品,利用SBR反应器,以硝酸盐为电子受体,在低碳源下,培养和驯化反硝化除磷菌。第一阶段采用厌氧/好氧/沉淀/排水的运行方式10周期,第二阶段采用厌氧/好氧/缺氧/好氧/沉淀/排水运行方式40周期。反硝化脱氮除磷性能的测试结果表明,经培养驯化得到的反硝化除磷菌处理低碳源废水,PO43--P的去除率达96%,出水浓度稳定在0.4 mg/L以下;NH4+-N去除率达78%,出水浓度稳定在3 mg/L以下;COD的去除率达86%,出水浓度稳定在20 mg/L以下;表明采用SBR反应器进行反硝化菌的培养驯化是可行的。     

SBR工艺用于生活污水除磷脱氮的试验研究

采用SBR工艺处理有机物含量低、氨氮含量高的城市污水，经过反复试验研究发现，该工艺对生活污水中氮、磷等污染物具有良好的去除效果。试验结果表明，采用试验水样平均进水水质为CODCr=197mg/L;BOD5=95mg/L;SS=203mg/L；NH4^ -N=63mg/L；PO4^-3=1.3mg/L，各项污染物的平均去除率为：CODCr80%,BOD583%，NH4^ -N75%，TP61%，处理后出水水质均能达到国家规定的排放标准（GB8978－1996），并提出了该工艺处理低碳高氮城市污水的最佳工艺条件。     

铝氧化废水处理新工艺研究

铝氧化废水采用二级化学混凝沉淀+空气吹脱+二段水解酸化--接触氧化处理新工艺,废水中污染物指标CODcr、NH3-N、磷酸盐均能达标排放。在原水CODcr为4500mg/L、NH3-N为429mg/L、磷酸盐为532mg/L时,出水指标CODcr为65mg/L、NH3-N为7.6mg/L、磷酸盐为0.35mg/L。CODcr去除率为98.6%,NH3-N去除率为98.2%,磷酸盐去除率为99.9%。     

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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