改进曝气生物滤池技术研究

提出化学混凝与曝气生物滤池结合,通过混凝处理和生物膜过滤的双重作用,对城市二级处理出水进行深度处理,以实现污水的回用.结果表明:在原水水质CODcr=672 mg/L、SS=200 mg/L、BOD5=576mg/L、pH=6.1时,出水CODcr=52 mg/L、SS=10 mg/L、BOD5=24 mg/L、pH=8.6.相对于单独使用BAF,组合工艺对CODcr,SS,BOD5,pH值的去除率均有所提高.系统、综合地给出了混凝-曝气生物滤池工艺流程和最佳工艺条件,为混凝-曝气生物滤池应用提供了技术参数.     

合成洗涤剂生产废水处理工程的设计与运行

介绍了混凝沉淀—生化处理—接触过滤—活性炭—吸附工艺处理合成洗涤剂生产废水的工程实践。根据实验 ,确定三氯化铁为主要混凝剂 ,p H值最佳范围为 5 .5～ 6 .0 ;工程调试表明 ,有效调节原水水质和强化混凝处理是保证后续生化处理系统稳定运行的前提。在进水 CODcr3 0 0～ 5 0 0 m g/L、L AS 5 0～ 15 0 mg/L时 ,经过处理后出水可达标排放 (CODcr≤ 10 0m g/L ,L AS≤ 5 mg/L )。     

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。     

水解酸化工艺在低浓度城市废水中的应用

研究了水解酸化-好氧工艺处理城市污水中的厌氧部分,包括水解酸化对低浓度城市污水的处理效果,CODcr与硫酸盐低比值对反应器的影响,及环境因子的改变对反应器的冲击影响。研究表明:对于低浓度(CODcr≤200 mg/L,BOD5≤100 mg/L、CODcr与硫酸盐比值小于1)的进水,水解酸化反应器处理效率可达到50%～60%或更高。     

UASB-好氧-物化组合法处理印染废水

根据印染废水的特店,提出了UASB-水解酸化-物化组合工艺的处理方法.该法通过实际应用,表明废水CODcr可由(1000～2000)mg/L降至80mg/L、BOD5可由(300～600)mg/L降至30mg/L,色度可由100～600倍降至40倍以下.该工艺具有投资少、运行可靠、操作简单的特点.     

CASS工艺在生活污水处理及回用中的应用

介绍CASS工艺在生活污水处理及回用中的应用.运行结果表明,进水CODcr为150-300mg L,BOD5为80-210mg L时,SS为100-220mg L时,出水CODcr≤50mg L,BOD5≤10mg L时,SS≤10mg L,完全符合回用要求.     

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。     

Fenton试剂法处理造纸废水的应用研究

用Fenton法对造纸废水进行处理研究,讨论了处理造纸废水的影响因素:pH值,H2O2的用量,Fe2+投入量, 搅拌时间,搅拌速度以及光照时间等对CODcr去除率的影响,得到最佳工艺条件:pH=6.00,H2O2(30%)的用量为8. 34 mL/L,FeSO4投入量为6.67 g/L,搅拌速度为280 r/min,紫外光照80 min后废水的CODCr去除率达85.3%,出水CODcr降到350 mg/L,达到国家造纸废水排放标准.     

合成洗涤剂生产废水处理研究

根据含表面活性剂的高浓度日化废水水质特性,采用了混凝-厌氧-好氧处理工艺.该工艺试验运行结果表明,在进水CODcr20000mg/L左右,混凝沉淀和好氧反应对高浓度日化废水的去除率分别达到90%以上和78%以上,该试验对工程上处理高浓度日化废水具有较好的指导意义.     

氨基酸系列阴离子表面活性剂生产废水的处理

介绍了以絮凝沉淀+ABR+接触氧化工艺处理阴离子型氨基酸类表面活性剂生产废水的工程实例。经过系统处理CODcr从进水2 800 mg/L降为90以下,BOD5从550 mg/L降为20 mg/L以下,处理效率均达到96%,排放水质完全达到《污水综合排放标准》(GB8978-1996)一级排放标准。     

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.     

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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