好氧颗粒污泥膜生物反应器处理畜禽废水

采用好氧颗粒污泥膜生物反应器处理畜禽废水,分别对COD、NH4 -N、NO2--N、NO3--N的去除效果和对膜通量的影响进行了研究。结果表明:在水力停留时间(HRT)为8h,进水COD浓度为600mg/L,NH4 -N浓度为40mg/L的条件下,出水COD、NH4 -N的浓度分别为46.6和4.8mg/L。NO2--N和NO3--N的去除率也可达90%以上。并且好氧颗粒污泥的加入减缓了膜的污染。     

Cu2+对好氧颗粒污泥理化特性的影响分析

以普通活性污泥为接种污泥,葡萄糖和乙酸钠为碳源,在SBR反应器中培养好氧颗粒污泥,考察不同质量浓度Cu2+(0 mg/L、1 mg/L、3 mg/L、5 mg/L和10 mg/L)冲击作用对好氧颗粒污泥理化特性的影响。结果表明,随着Cu2+质量浓度从0 mg/L上升至10 mg/L,好氧颗粒污泥的理化特性均受到不同程度的影响。质量浓度为1 mg/L和3 mg/L的Cu2+对COD和NH+4-N的去除率影响较小,而质量浓度为5 mg/L和10 mg/L的Cu2+对COD和NH+4-N的去除率影响较大。随着Cu2+质量浓度的增加,好氧颗粒污泥的丝状菌逐渐增多,污泥浓度不断下降,沉降性能急剧恶化;密实度降低,结构越来越松散,粒径出现两极分化的现象,而且在质量浓度为10 mg/L的Cu2+作用下颗粒污泥解体。     

内循环式A/O/IAT-IAT同步生物脱氮除磷工艺特性研究

报道了自主开发的内循环式A／O／IAT-IAT同步脱氮除磷工艺的运行特性．试验以模拟废水为处理对象，对该工艺在三种不同工况下的运行效果进行比较．试验结果显示，在进水COD、BOD5、NH4^＋-N、PO4^3--P浓度分别为629．7～821．6mg／L、360～580ms／L、36．9～59．8mg／L、6．0～7．6mg／L，总水力停留时间为20hr，污泥龄为3．5d，污泥回流比为200％的条件下，COD、BOD5、NH4^＋-N和PO4^3--P去除率分别为97％～99％、99％、89％～99％和89％～98％，出水水质达到了国家城镇污水处理厂污染物排放一级A标准（GB18918—2002）．在各项运行控制条件中，HRT和SRT是影响该工艺运行效果的主要因素．     

好氧颗粒污泥与普通活性污泥的同步培养与性能比较

研究用于焦化废水处理的好氧颗粒活性污泥和传统普通活性污泥的同步培养及其对COD和NH3-N的脱除特性比较。设置反应器1(R1)和反应器2(R2)两个平行装置,R1用作普通活性污泥的培养,R2用作好氧颗粒污泥的培养。两者均采用普通好氧曝气并以相同的进水在好氧厌氧交替工艺下同步运行,R2在出水前加5 min曝气和5 min沉淀。R2内培养出好氧颗粒活性污泥,颗粒直径0.5~2 mm,含水率为95%,污泥质量浓度(MLSS)为3101~6203 mg/L,污泥沉降指数(SVI)为100.5~128.7 mL/g。经对COD质量浓度380~1 200 mg/L和NH3-N质量浓度63.7~134.4 mg/L的焦化废水处理,COD和NH3-N同时去除率达到80%以上,优于R1的运行结果。     

采用石灰预处理和二级生物工艺处理垃圾渗滤液的小试研究

采用石灰预处理＋厌氧／好氧一级生物处理＋缺氧／好氧二级生物处理的组合工艺，并在二级生物处理系统中投加硅藻土形成生物硅藻土处理垃圾渗滤液．结果表明：投加硅藻土，可提高二级生物处理系统的活性污泥浓度，降低污泥有机负荷，从而达到较好的NH3-N去除效果．经本组合工艺处理，NH3-N去除率达到97％左右，出水NH3-N浓度为15mg／L左右．     

混凝-SBBR处理垃圾渗滤液的实验研究

垃圾渗滤液具有有机物浓度高，金属含量高，氨氮含量高等特点．SBBR法具有生物相多样化，生物量多，剩余污泥的产量少，工艺过程稳定等特点．经研究发现，在进水负荷为3．6kgCOD／m^3·d以下时，SBBR对COD、NH4^＋-N的最高去除率分别为74．56％、68．89％．同时，采用混凝实验以降低原水中COD、NH4^＋-N的浓度．石灰作为pH调节剂，聚合硫酸铁作为混凝剂，实验得到COD、Nn4^＋-N的最高去除率分别为59．66％、54．31％．     

好氧颗粒污泥膜生物反应器处理焦化废水

为了提高焦化废水的处理效果,减轻对环境的污染,选择好氧颗粒污泥膜生物反应器处理人工模拟焦化废水,探讨了不同颗粒污泥浓度对焦化废水的处理效果及膜污染的情况。结果表明,不同颗粒污泥浓度对焦化废水的处理效果有显著差别。投加颗粒污泥后,反应器对不同颗粒污泥浓度条件下COD、NH3-N、苯酚、TP的去除效果不同。好氧颗粒污泥内部缺氧和厌氧环境下,反应器中的好氧颗粒污泥质量分数为100%时对COD去除率为99.17%、NH3-N去除率为95.00%、苯酚去除率为99.90%、TP去除率为85.22%。同时,比较了不同颗粒污泥浓度下反应器运行中膜通量的变化趋势及膜表面的变化情况。颗粒污泥投加量的不同对膜污染的抑制作用也不同。颗粒污泥使膜污染减轻,膜通量恢复率升高。     

烟田土壤及污泥0.01 mol/L CaCl2浸提液中N素形态测定

对烟田土壤及污泥0．01mol/LCaCl2浸提液中NH4^ -N,NO3^-和可溶性有机态N的测定方法进行了探讨，提出了简便、快捷、适合国内实验室分析条件的测定0．01mol/LCaCl2浸提液中NH4^--N，NO3^--N和可溶性有机态N的方法和步骤，为烟田合理推荐施用N肥、污泥农用及防止土壤、水体N素污染提供了有效的监测分析手段。     

生物陶粒滤池预处理黄浦江上游水的生产性试验研究

以黄浦江上游水为水源，进行生物陶粒滤池预处理的生产性试验．试验结果表明：(a)不曝气时，生物陶粒滤池对原水中的浊度、Fe和Mn的去除效果比曝气工况好，平均去除率分别达到61．70％，73．86％。74．05％．(b)在原水溶解氧浓度较高(平均为4．8mg／L)而NH3-N浓度较低(平均为0．28mg／L)时。曝气和不曝气工况下，生物陶粒滤池对CODMn的去除率没有显著差别，分别为16．09％和15．60％．(c)在原水NH3-N浓度低的情况下。生物陶粒滤池对NH3-N和NO2^--N的去除效果均较差，但试验结果显示，曝气充氧有助于提高去除率．(d)从生物陶粒预处理装置的运行要求来看，其对浊度、有机物、Fe和Mn等各项指标的去除效果良好。且从去除NH3-N和NO2^--N的情况来看，曝气充氧是必须的．生物陶粒滤池的设计和运行参数可为微污染水源水厂的改造和新建提供科学依据．     

不同形态氮素营养对彩椒生理特性的影响

比较了三种形态氮素营养（NH4^ -N;NO3^--N;NH4^ -N:NO3^--N=1:1)对彩椒不同生长发育时期有关生理特性的影响，结果表明，彩椒发棵期之前（含发棵期），施用NH4^ -N NO3^--N混合态氮素，效果最好，植株全氮含量、叶片叶绿素含量、净光合速率的测定值最高，硝酸还原酶活性仅次于NO3^--N处理组；同期若单施氮素，则彩椒更易吸收和利用NH4^--N；但发棵期后，单施NO3^--N，各指标的测定值明显高于其它处理。     

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.