膜分离技术在电镀废水中的应用——膜技术是电镀废水深度处理回用的发展方向

膜分离技术是一种高效、低能耗和易操作的液体分离技术,同传统的水处理方法相比,其能够实现电镀废水的循环利用和对有用物质的回收。本文主要介绍了膜分离技术处理工艺在电镀废水中的应用,指出膜技术是电镀废水深度处理回用的发展方向。     

膜分离技术在石油化工领域中的应用

通过分析气体膜分离、渗透汽化膜分离和膜生物反应器等膜技术在石化领域中的应用 ,提出应开发高性能的膜材料和膜、膜装置及过程优化 ,以及膜分离与其他分离技术耦合的必要性。     

膜技术在生物技术中的应用及其发展趋势

随着膜技术的不断开发和应用范围的逐渐扩大,膜技术在迅速发展的生物技术领域中的应用已取得不少令人振奋的成果。现代的生物技术需要在细胞培养、蛋白质分禽、生物液体提纯和浓缩、无菌操作及其他生物化学方面采用与之匹配的高技术,以代替传统的过滤、结晶、离心、吸附、冷冻、蒸发和蒸馏等分离、精制和浓缩方法。正处兴旺发展和不断改进、完善的膜技术,特别是膜分离技术,因其设备结构简单,操作步骤简化,质量的迁移中无相变,是生物技术中的最佳选择方法。生物技术中引入膜技术以后,改     

全国轻工业膜分离技术应用研讨会将在青岛召开

为推动膜分离技术在轻工业领域的广泛应用，更好地以膜技术解决轻工业生产中的分离、浓缩、净化、除菌、保鲜等问题，用高新技术改造传统轻工业，加快支柱产业结构调整的步伐；为加快企业技术创新，节约能源、保护环境、提高企业整体效益，由中国膜工业协会和山东省一轻总会共同主办的“全国轻工业膜分离技术应用研讨会”将于１９９９年１０月在青岛召开．（１）会议主要内容围绕膜技术解决轻工业中果汁、饮料、饮用纯水、乳品、酒类、调味品、制糖、果蔬、酶制剂等的分离、净化、提纯、浓缩、保鲜、有用物质的回收和废水处理等议题，分别开…     

气体分离膜技术动向

气体分离膜技术动向膜分离技术以其无相变、省力节能和能提供紧凑的工艺而成为分离技术的重要手段。气体分离膜技术已应用于石化、化学、精密机械、食品等领域。高分子气体分离膜的开发包括膜材料和薄膜化技术的开发。高分子所具的物理特性决定了膜材料的特点，因此它的化...     

“第三届膜分离技术在冶金工业中应用研讨会”征文通知和第一轮会议通知

随着膜技术的不断发展,在冶金行业中的应用已涉及到采矿、选矿、冶炼、材料及加工等各专业领域。除在钢铁工业中应用外,膜技术的应用及试验研究已涉及到多种有色、稀有及放射性元素。应用的膜技术已覆盖DD、ED、EM、BP、EDI、RO、NF、UF、MF及MD与气体分离等多种膜分离技术领域。     

“第三届膜分离技术在冶金工业中应用研讨会”征文通知和第一轮会议通知

随着膜技术的不断发展,在冶金行业中的应用已涉及到采矿、选矿、冶炼、材料及加工等各专业领域．除在钢铁工业中应用外,膜技术的应用及试验研究已涉及到多种有色、稀有及放射性元素．应用的膜技术已覆盖DD、ED、EM、BP、EDI、RO、NF、UF、MF及MD与气体分离等多种膜分离技术领域．     

我国膜分离工业技术发展要点

<正>膜分离气体工业有关业内人士认为,我国膜分离气体工业科技发展主要有以下几个技术要点:(1)对在我国已工业化应用的膜技术,如微滤、超滤、反渗透和气体分离膜等,要加大开发力度,提高产品质量,形成规模效益。以解决膜材料和制膜技术为核心,突破复合反渗透膜的制备技术,使产品达到国际水平;进行行业     

后记

膜分离技术是近几十年来发展起来的一门多种学科交叉的新兴学科和高新技术．膜技术已广泛用于化工、石油化工、冶金、环保、食品饮料等许多领域，并成为21世纪最具有发展前景的六大新兴技术产业（信息电子、生物医药、环境保护、新材料、新能源和生态农业）．也是我国当前重点推动发展的20个战略性重点专项领域．     

“新型聚电解质膜和聚电解质复合膜及其应用技术”通过教育部鉴定

2005年6月29日，在京召开了由国家教育部组织的“新型聚电解质膜和聚电解质复合膜及其应用技术”成果鉴定会，该成果由清华大学化工系膜中心和北京蓝景膜技术工程有限公司共同完成，专家组主任袁权院士主持了会议，参加鉴定会的专家组成员有国内著名的膜分离技术专家刘忠洲教授等7人。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

A study of centrifugal cast high boron high speed steel

In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M₂(B,C), (W,Mo)₂(B,C), M₃(B,C), M₂₃(B,C)₆ type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm². The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K₁ mill housing of bar mill.     

Thixotropy of Systems with Shear Thinning and Plastic Flow Behavior

The definition of the thixotropy is a decrease in viscosity with time in shear and a subsequent recovery of viscosity after the shear deformation is removed.We ...     

Brainstorming for ISO Strategy 2016-2020

正Responding to ISO’s appeal for survey for the to-be-developed ISO Strategy Plan for 2016-2020,SAC hosted a special workshop over the needs and comments of various fi elds on June 8 in Beijing.The workshop was attended by ISO President-elect and Ansteel General Manager Zhang Xiaogang,SAC Vice-Administrator Yu Xinli,and 30 experts from     

CNAS Passes APLAC's PTP Review

正The review group of Asia Pacific Laboratory Accreditation Cooperation(APLAC)carried out a 4-day peer review of the proficiency testing provider(PTP)for China National Accreditation Service for Conformity Assessment(CNAS)from July 28 to 31,2014.CNAS passed the PTP review with excellent performance.Two senior peer reviewers of APLAC made a comprehensive,rigorous and detailed review of CNAS’s PTP accreditation activities,and made the on-spot inspection of the review groups in Shanghai and Shenzhen respectively.