凹凸棒石与聚合氯化铝组合处理市政污水的研究

为解决滁州市某市政污水厂的污水部分指标超标问题,本文采用凹凸棒石与聚合氯化铝相组合的方式,开展市政污水处理的研究.结果表明,相比于单一的聚合氯化铝,凹凸棒石的添加能够显著促进污水除磷降浊,当凹凸棒石的添加量为20 mg/L时效果最佳,总磷去除率和浊度的去除率分别达到96％和92％.     

曝气生物滤池工艺去除氨氮影响因素分析

以四川省眉山市污水处理厂曝气生物滤池为研究对象,对氨氮的去除效果及影响因素进行了探讨.试验结果表明,曝气生物滤池对氨氮去除效果具有一定的抗冲击负荷能力,在进水氨氮平均为45.37mg/L时,平均出水氨氮和去除率分别为10.03mg/L和77.89%,去除效果稳定;水温较高时曝气生物滤池去除氨氮效果较好,低温时其对氨氮去...     

藻菌固定化用于市政污水深度脱氮除磷及藻体产油研究

 污水再生利用是解决水资源与能源危机的重要途径,采用微藻深度处理污水并生产生物质能源是一大热点。针对市政污水深度处理,以活性污泥为固定化细菌,采用小球藻和栅藻,分别比较了固定化藻菌、固定化微藻,以及悬浮态微藻在藻体生长、污水脱氮除磷和微藻产油方面的差异,拟实现对市政污水深度脱氮除磷的同时实现微藻油脂的诱导富集。结果表明,固定化藻菌对氮磷的去除效果优于固定化微藻和悬浮态微藻,且固定化藻菌中微藻油脂质量分数最高。当市政污水NH₄⁺-N 和PO₄^3--P 的初始质量浓度分别为25 和3 mg/L 时,固定化栅藻菌培养4 d 后能够完全去除水体中的氮磷,而固定化藻菌中小球藻的油脂质量分数可达到16.5%。     

水解酸化＋UCT＋混凝处理生活污水运行效果分析

介绍了采用水解酸化＋UCT＋混凝＋消毒工艺处理生活污水的设计及调试运行实例。结果表明,该工艺能有效去除污水中的污染物,在进水COD为415mg／L,BOD5为203mg／L,SS为311mg／L,NH3-N为36mg／L,TN为44mg／L,TP为4．3mg／L时,出水COD为24mg／L,BOD5为8mg／L,SS为6mg／L,NH3-N为4mg／L,TN为10mg／L,TP为0．3mg／L,去除率分别可达到94．2％、96．1％、98．1％、88．9％、77．3％、93％,出水水质稳定,并达到《城镇污水处理厂污染物排放标准》（GB18918—2002）一级标准中的A类标准。同时对运行过程中存在的问题进行了分析,并给出了相应的解决方法。该项工程为城市生活污水处理的设计及调试提供了参考。     

A2/O工艺脱氮效果研究

分别考察了不同HRT、DO、混合液和污泥回流比、温度、C/N比等条件下,A2/O工艺的脱氮效果和有机物去除效果.结果表明,对于城市生活污水而言,当好氧区水力停留时间为6 h、DO为4 mg/L、混合液回流比为300%、污泥回流比为100%时,A2/O工艺能获得较好的脱氮效果和有机物去除效果.     

混凝沉淀-UASB-BAF处理高浓度乳酸精馏残液实验研究

乳酸精馏残液是发酵法生产乳酸过程中产生的高浓度有机废水。原液CODcr浓度为1．08×10^6mg／L、BOD5浓度为4．8×10^5mg/L、SS浓度为3．6×10^5mg/L。将该废液稀释100倍,用混凝沉淀-UASB—BAF工艺处理,出水CODcr、BOD5、SS浓度、分别小于300mg/L、60mg/L、200mg/L。CODcr、BOD5、SS去除率可分别达到97％、98％、99％以上。出水达到《污水综合排放标准》（GB8978-1996）二级标准的要求。     

水解酸化/MBR/RO处理校园生活污水的试验研究

采用水解酸化、MBR和RO的组合工艺处理东莞理工学院校园生活污水,通过中试试验,考察了组合工艺对污水的处理效果以及污水回用的可行性。实验结果表明该组合工艺可以有效去除生活污水中的污染物。MBR在工艺参数MLSS 8 000 mg/L、HRT为6 h、DO为1.0~3.0 mg/L时,出水COD小于35 mg/L、NH+4-N小于7 mg/L、TP为0.5 mg/L左右,水质达到《城市污水再生利用-城市杂用水水质》标准(GB/T18920-2002)。进一步经过RO处理后,出水COD低于1 mg/L、电导率低于10μs/cm,可以达到饮用水标准。     

复合快渗系统处理生活污水的模拟试验研究

用自制的实验室快速渗滤系统模拟反应器对生活污水进行处理.研究结果表明,此套实验室模拟快渗处理生活污水系统对CODCr、TN、TP去除效果良好,对CODCr的去除率最大值为95.4%,TN为74.7%,TP为83.5%.在布水4 d后,出水CODCr,TN和TP质量浓度分别稳定在20 mg/L,20 mg/L和1.5 mg/L以下.     

广州典型排放源废水中抗生素的污染特征和去除效果

采用固相萃取-高分辨液相色谱-质谱(SPE-RRLC-MS/MS)技术,研究了广州市区5类典型排放源（市政污水处理厂、制药厂、医院、垃圾填埋场和畜牧养殖场）中41种目标抗生素的污染特征和去除效果. 结果表明,各类排放源中分别检出抗生素24种（市政污水处理厂）、14种（制药厂）、15种（医院）、12种（垃圾填埋场）和13种（畜牧养殖场）,且5类典型排放源水相中质量浓度最高的物质分别为氧四环素（917 ng/L）、罗红霉素（127 g/L）、罗红霉素（11.8 g/L）,脱水红霉素（3.61 g/L）和氧四环素（664 g/L）. 垃圾填埋场和畜牧养殖场的污水处理设施对抗生素总量具有较好的去除效果（去除率99.7%和99.5%）,而污水处理厂、制药厂和医院对抗生素总量的去除能力较为一般（去除率49.3%、63.0%和26.9%）. 广州市区5类排放源以水相形式排入环境水体的抗生素总量为1.21 kg/d,人均贡献量为89.3 g/d. 各类典型排放源中未能完全去除的抗生素成为水环境中抗生素污染的重要来源之一.     

SUFR系统中同时反硝化吸磷现象的试验研究

螺旋升流式反应器(Spiral Up-Flow Reactor,SUFR)是一种新型的污水处理工艺,该工艺对污水中COD、TN、TP的去除效果较好,出水浓度分别低于28 mg/L、10 mg/L和0.5mg/L.本文对螺旋升流式反应器脱氮除磷系统中的反硝化吸磷现象进行了深入的研究,通过分析发现,适当的COD浓度和DO浓度有利于同时反硝化吸磷现象的发生。     

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     

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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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has