城镇污水处理过程中的通风除臭方法和设计

城镇污水在处理的过程产生的臭气,影响了操作人员健康和周边环境。通过对污泥脱水间以及粗细格栅进行通风和生物滤床联合工艺法处理排放的臭气,获得良好效果,并提供了有关的工艺设计参数。经某厂应用,硫化氢与氨气的去除效率分别为95.29%和88.68%。     

污水除臭技术的比较及探讨

本文介绍了污水恶臭污染的来源，臭气的基本成分和几种除臭方法，并通过比较，表明生物除臭法比较经济实用。     

浅谈城市污水处理厂除臭工艺

随着社会进步．经济发展、人们环境意识增强和生活质量的不断提高，污水处理厂恶臭气体控制与处理问题已越来越受到重视。本文就污水处理厂运行过程中产生的臭气，重点介绍了土壤脱臭化学反应除臭．生物／活性嶷脱臭和高能离子脱臭的作用原理、工艺流程及设计参数，并给出了具体的工程实例。     

浅析城市污水处理厂生物除臭法

本文介绍了在污水处理厂中应用的生物除臭3种方法：生物滤池法、洗涤式活性污泥法以及曝气式活性污泥法并结合案例进行分析，总结出活性污泥法是目前处理城市和工业污水普遍采用的好氧生化处理技术．其工艺流程较为简单，处理成本低,而处理效果好，BOD/COD去除率高。     

实验动物设施废气处理设备工艺选择

摘要:目的 废气处理设备工艺对环境的影响。 方法 通过对水喷淋吸收法、光氧化、低温等离子分解法和水喷淋加药法吸收分解的实验与分析,找出实验动物设施废气处理的设备最佳方案,通过检测进入和排出设备气体中氨、硫化氢、臭气浓度对比,筛选出最有效的除臭方法。 结果 通过测试表明,除臭喷淋水投加次氯酸钠或采用光氧化等离子除臭,排放的气体中氨、硫化氢、臭气浓度均优于《 恶臭污染物排放标准》 ( GB 14554—93) ,且经济可行。结论 采用喷淋水中投入次氯酸钠方法或采用光氧化等离子除臭与水喷淋除臭组合,均可满足动物设施排风除臭的需求,从经济和技术角度可行。 可减少实验动物设施排风中臭气的含量,有效地解决设施周边臭气的问题,高效、节能,可以在实验动物设施中推广应用。     

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。     

生物除臭技术在南方某污水处理厂的应用研究

南方某污水处理厂位于该市中心,污水处理厂的臭气问题严重影响周边居民的日常生活.为治理恶臭气体污染,本文根据老污水处理厂的具体情况,将格栅、沉砂池等处的臭气集中起来,采用生物滤池法进行处理,达到了较理想的技术、经济目标.     

油田高温采出水生化处理研究

针对胜利油田乐安油田56～60℃高温含油采出水,筛选出高效降解石油污染物的高温功能菌,采用生物接触氧化工艺实现该油田采出水生化处理,处理后污水达到国家污水综合排放标准中的一级排放标准。     

SBR工艺处理腈纶混合废水试验研究

本文研究了SBR法处理腈纶混合废水工艺条件,考察了腈纶混合废水先经超声波处理,再经SBR处理的效果。试验结果表明:COD去除率为73.3%,BOD去除率为46.4%。采用超声波对腈纶混合废水作预处理,可有效降低腈纶混合废水的COD,NH+4-N,增加腈纶混合废水的可生化性。再经间歇式活性污泥法(SBR)处理后,各项水质指标均符合GB8978-88《污水综合排放标准》中的一级标准。     

辽化第四污水处理场生化工艺设计分析

通过对辽化二期第四污水处理场工艺路线确定、生化处理系统主要设计内容及特点、 设计上存在问题与解决措施以及运行效果等方面进行阐述和分析，充分论证了普通适性污泥法作为第四污水处理场生化处理工艺的合理性与实用性。     

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.     

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.     

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.     

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.     

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.     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.