下载文档原格式
陶氏高压反渗透膜重量英文回答：The weight of Dow high-pressure reverse osmosis membranes varies depending on the specific model and size. Generally, the weight of these membranes can range from a few kilograms to several hundred kilograms. For example, the weight of a standard Dow Filmtec BW30-4040 membrane element is approximately 15 kilograms, while a larger Dow Filmtec BW30-400 membrane element weighs around 100 kilograms.The weight of the Dow high-pressure reverse osmosis membranes is influenced by several factors. Firstly, the size of the membrane element plays a significant role in determining its weight. Larger membrane elements, which have a higher surface area, generally weigh more compared to smaller ones. Additionally, the material composition and construction of the membrane also contribute to its weight. Dow membranes are typically made from thin-film compositematerials, which are lightweight yet durable.It is important to consider the weight of the membranes when designing and installing a reverse osmosis system. The weight of the membranes affects the overall system design, including the selection of suitable support structures and the capacity of the system to handle the weight. Proper installation and support are crucial to ensure thelongevity and efficiency of the membranes.中文回答：陶氏高压反渗透膜的重量因具体型号和尺寸而异。
Product Information BW30-400Page 1 of 2 ™® Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of DowForm No. 609-00091-0910DOW™ FILMTEC™ MembranesDOW FILMTEC BW30-400 High Rejection, High Surface Area Brackish Water RO ElementFeaturesThe DOW™ FILMTEC™ BW30-400 is the product of choice when the highest qualitypermeate is required. It was the first 400 square foot membrane element on the market and continues to be widely used in new equipment and retrofits where system capital and productivity are factors.• Dow’s superior automated manufacturing technology results in the most consistent performance element-to-element and year-after-year.• BW30-400 elements deliver high flow and high rejection without being chlorinated during the manufacturing process. This is one reason why DOW FILMTEC elements are more durable and may be cleaned over a wider pH range (pH 1-13) than other RO elements. • With more than a decade of proven performance, BW30-400 is the product you can rely on for years of trouble-free operation.Product SpecificationsProductPart number Active area ft 2 (m 2) Feed spacer thickness (mil) Permeate flow rate gpd (m 3/d) Stabilized salt rejection (%) Minimum salt rejection (%) BW30-40098650400 (37)2810,500 (40)99.5%99.0%1. Permeate flow and salt rejection based on the following standard conditions: 2,000 ppm NaCl, 225 psi (15.5 bar), 77°F (25°C), pH 8 and 15% recovery.2. Flow rates for individual elements may vary but will be no more than 15% below the value shown.3. Sales specifications may vary as design revisions take place.4. Active area guaranteed +/-3%. Active area as stated by Dow is not comparable to nominal membrane area often stated by some manufacturers. Measurement method described in Form No. 609-00434.Figure 1Dimensions – inches (mm) Product A BC BW30-40040.0 (1,016)1.125 ID (29)7.9 (201)1. Refer to Dow FilmTec Design Guidelines for multiple-element applications and recommended element recovery rates for various feed sources. 1 inch = 25.4 mm2. Element to fit nominal 8.0-inch (203 mm) I.D. pressure vessel.• • • • • • • • •Membrane Type Polyamide Thin-Film Composite Maximum Operating Temperature a 113°F (45°C) Maximum Operating Pressure 600 psig (41 bar) Maximum Pressure Drop 15 psig (1.0 bar)pH Range, Continuous Operation a2 - 11 pH Range, Short-Term Cleaning (30 min.)b1 - 13 Maximum Feed Flow 85 gpm (19 m 3/hr) Maximum Feed Silt Density Index SDI 5Free Chlorine Tolerance c< 0.1 ppm a Maximum temperature for continuous operation above pH 10 is 95°F (35°C).b Refer to Cleaning Guidelines in specification sheet 609-23010.cUnder certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow recommends removing residual free chlorine by pretreatment prior to membrane exposure. Please refer to technical bulletin 609-22010 for more information.Operating LimitsL enntech***************** Tel. +31-152-610-900 Fax. +31-152-616-289Page 2 of 2™®Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow Form No. 609-00091-0910Important InformationProper start-up of reverse osmosis water treatment systems is essential to prepare the membranes for operating service and to prevent membrane damage due to overfeeding or hydraulic shock. Following the proper start-up sequence also helps ensure that system operating parameters conform to design specifications so that system water quality and productivity goals can be achieved.Before initiating system start-up procedures, membrane pretreatment, loading of themembrane elements, instrument calibration and other system checks should be completed.Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.Operation GuidelinesAvoid any abrupt pressure or cross-flow variations on the spiral elements during start-up, shutdown, cleaning or other sequences to prevent possible membrane damage. During start-up, a gradual change from a standstill to operating state is recommended as follows: • • Feed pressure should be increased gradually over a 30-60 second time frame.Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds. • • • • • • • Permeate obtained from first hour of operation should be discarded.GeneralInformationKeep elements moist at all times after initial wetting.If operating limits and guidelines given in this bulletin are not strictly followed, the DOW™ FILMTEC™ Reverse Osmosis and Nanofiltration Three-Year Prorated Limited Warranty (Form No. 609-35010) will be null and void.To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar). Avoid static permeate-side backpressure at all times.Regulatory NoteThese membranes may be subject to drinking water application restrictions in somecountries: please check the application status before use and sale.Notice: The use of this product in and of itself does not necessarily guarantee the removal of cysts and pathogens from water. Effective cyst and pathogen reduction is dependent on the complete system design and on the operation and maintenance of the system. Notice: No freedom from any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer's use and for ensuring that Customer's workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document. References to "Dow" or the "Company" mean the Dow legal entity selling the products to Customer unless otherwise expressly noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.L enntech***************** Tel. + Fax. +31-152-616-289。
陶氏反渗透膜DOW™FILMTEC™BW30FR-400反渗透元件采用陶氏专有的防污膜技术，具有出色的防污性和可清洁性，旨在净化具有高生物或有机污垢潜力的水，并具有良好控制的预处理系统。
该产品是陶氏反渗透膜DOW FILMTEC BW30FR-365元件的延伸，已经为全球众多客户展示了其价值。
运行极限：最高操作温度：113°F(45℃)最高操作压力：600psig(41bar)最高压降：15psig(1.0bar)PH范围：连续运行：2-10PH范围：短期清洗(30分钟)：1-13最大进水流量:85gpm(19m3/hr)最大给水：SDI15：5允许游离氯含量C：<0.1ppm1. 上述测试值是基于如下测试条件：2,000 ppm NaCl, 225 psi (15.3 bar), 77°F(25°C) , pH 8, 15% 回收率。
2. 单支元件的流量可能不同，但不会低于所列出的数值超过7%。
3. 当产品质量提高时，产品规范可能稍有变化。
4. 有效膜面积将在所给出的数值正负3%内。
计算有效膜面积的方法与其他厂家不同基本工作原理：运用特制的高压水泵，将原水加至6—20公斤压力，使原水在压力的作用下渗透过孔径只有0.0001微米的反渗透膜。
化学离子和细菌、真菌、病毒体不能通过，随废水排出，只允许体积小于0.0001微米的水分子和通过。
反渗透膜具有设备构造紧凑，占地面积小，单位产水量高，能量消耗少，去除杂质彻底，使用范围广，自动化程度高，使用操作方便，无污染等多种优点。
应用领域：1.食品用水：饮用纯净水、饮料、低度酒、啤酒、果汁浓缩等。
2.电子用水：单晶矽半导体、积体电路板、电镀、显像管制造系统。
3.锅炉用水：热力、火力发电锅炉、厂矿中、蒸汽锅炉与动力系统。
4.医药用水：医用输液、药剂、生化制品、透析等。
5.化工用水：化妆品、洗涤剂、香料、化工冷却、化学药剂制造等。
反渗透说明书上海禹力水处理科技有限公司简介本说明书是意于帮助用户能够正确安装和使用本设备，以使设备达到最佳运行效果和最长使用寿命，所以，请用户在安装和使用本设备务必花一定时间认真阅读本说明书。
每一台设备的生产能力都是在原水温度为25℃的情况下设定的。
若实际运行中原水温度高于或低于这个温度其生产能力会有一定程度的变化。
当然，原水其它条件的变化都会对产品水水质和产量带来影响，这在后面有关章节及有关功能介绍中分别阐述。
逆渗透过程是利用半透性螺旋卷式膜分离去除水中的可溶性固体、有机物、胶体物质及细菌。
原水以一定压力被送至并通过逆渗透膜，水透过膜的微小孔径，经收集后得到纯水。
水中的杂质在截流液中浓缩并被排出。
RO膜可除去原水中96%以上的溶解性固体，99%以上的有机物及胶体，以及几乎100%的细菌。
RO设备是目前世界上水处理设备中制取纯水的最先进的设备之一，其运行费用低，经济实惠、操作方便、运行可靠，是商家首选的制取纯水设备。
目录一、简介二、预处理三、RO进水条件四、安装注意及指导五、开机前准备和操作说明六、系统的维护与保养七、故障排除及注意事项八、附录A—反渗透膜清洗一览表九、附录B—RO膜系统常见故障及处理十、附录C—膜元件用杀菌剂及保护液十一、附录D—反渗透电器接线图预处理系统操作规程一．多介质过滤器：石英沙装入介质过滤器后，应进行反洗，正洗以便去除滤料中的杂质，悬浮物，从而降低水的浊度提高澄明度，具体操作规程如下：1．、．打开多介质过滤器的反冲阀，排空阀，关闭进水阀，排污阀，起动原水泵进行反洗，时间约为一小时；2．、．反洗后还须进行正洗，需打开进水阀，排水阀，其余阀门关闭，起动原水阀，清洗时间约为40分钟。
以上清洗需反复进行，只至出水水质清亮，无任何杂质和悬浮物为止。
二．活性炭过滤器活性碳装入活性碳过滤器后，先进行反洗，再进行正洗，以去除滤料中的黑色粉末及其它杂质，具体操作方法如下：a)打开多介质过滤器的进水阀，活性碳过滤器的反洗冲阀，排空阀，其余阀门关闭，起动原水泵（或自来水阀门）进反洗时间约为1小时间；b)反洗后再进行正洗，打开多介质过滤器的进水阀，活性碳过滤器的进水阀，排污阀，其余阀门须关闭，正洗至出水无杂质。
美国陶氏反渗透膜的特点和说明陶氏水处理事业部的解决方案–应该认真考虑的膜元件特性当设计一个反渗透系统并选择膜元件品牌时，除了产水量和脱盐率之外，其实有许多因素直接影响总的制水成本，需要极其慎重的加以考虑，下面将讨论在选择膜元件时对系统经济性有影响而必须考虑的因素。
反渗透有效膜面积，这是在设计系统时必需考虑的重要因素。
总产水量与系统中膜元件的总有效膜面积成正比，由于反渗透系统是根据规定的通量(单位面积上的流量)作为设计基础，设计人员掌握元件的有效膜面积，才能设计出性能可靠的系统。
当系统选用的膜元件的有效面积越大，同样的产水量，所需膜元件数、膜壳数及其它配件的量就越少，同时也意味着节省了设备空间，节约了系统的安装和维护费。
陶氏水处理事业部的高精度全自动生产线，能制造全系列达到规定有效膜面积的非常一致的膜元件。
进水流道的宽度，直接影响运行成本。
进水流道越宽，系统对进水水质的要求和预处理设备不正常工况的要求相对来说越宽松。
较宽的进水流道，还可以更有效的进行膜清洗，即使在高污染条件下，系统仍可维持较低的压降。
陶氏FILMTEC膜元件拥有膜工业界最宽的进水流道，365ft2膜元件为34密耳，400ft2膜元件为28密耳，这意味着FILMTECTM膜元件具有更长的使用寿命。
全自动膜元件卷制技术，才可制造出高度一致的、膜面积精确的元件。
全自动生产技术不需要牺牲进水流道厚度，就可制造出最高膜面积的元件。
此外，全自动生产技术在卷制时膜叶分布更均匀，这样进水流量分布也更均匀，全自动生产技术生产出的膜元件，其性能更一致更稳定，不再需要根据每支膜元件的测试数据，安装膜元件。
陶氏所有FILMTECTM膜元件均采用先进的全自动生产技术生产，系统投运更快，具有更稳定更长的系统性能。
更宽的清洗pH值范围，是实现有效清洗的关键所在。
由于清洗液的pH值是去除膜元件内污染物的关键，膜元件本身所能承受的pH值范围越宽，则清洗效果就越好，而清洗越有效，清洗间隔时间就越长，每次清洗的耗时也就越少。
5000m3/d反渗透海水淡化系统项目设计方案一、总则1.1、本技术协议适用于说明5000m3/d海水淡化系统。
它提出了系统的工艺设计以及设备的功能设计、结构、性能、安装和调试等方面的技术规定。
1.2、本技术协议经卖、买双方确认后作为订货合同的附件，与合同正文具有同等法律效力，如卖方不遵守本协议，需方有权拒收货、拒付货款。
1.3、卖方保证提供符合有关工业标准和企业标准的优质产品。
如果买方有除技术协议书以外的特殊要求，应以书面形式提出并做详细说明。
1.4、卖方提供高质量的设备。
这些设备是技术先进并经过两台三年以上成功运行实践证明是成熟可靠的产品。
1.5、卖方在设备设计和制造中所涉及的各项规程、规范和标准必须遵循现行最新版本的中国国家标准。
二、项目基本情况2.1、项目概况海水淡化项目建设总规模按5000m3/d设计。
2.2、工程设计原则➢根据原海水的水质特征及工程建设地点的水文、气象等自然条件，结合已建成并成功运行多年的海水淡化工程实例，在确保出水水质达标的前提下，采用成熟、可靠、技术先进的处理工艺和设备。
➢设备选型以技术先进、经济合理、安全可靠、节能环保，最大可能地减少设备投资费用和系统的维护费用为原则。
➢处理工艺的确定、设备的选型以最大可能地减少运行能耗和费用为原则。
➢系统设备全面采用实现标准化、模块化和系统化的设计方式，以便于快速安装和以后系统维护。
2.3、设计基础资料：反渗透海水淡化系统的工程设计、设备的制造和成套，取决于以下几个要素：第一、原海水的水质特点及建设地点的自然条件；第二、系统最终的产水水质指标；第三、系统的产水规模即产水量的大小；第四、用户对系统工艺和设备配置的总体要求。
根据本海水淡化项目的实际情况，综合分析以上要素，并结合以往的工程实践经验，提出本海水淡化的设计方案。
2.3.1、工程设计指标本方案根据反渗透海水淡化系统自身的技术特点及用户对水质的要求，提出以下设计指标：●系统产水指标：○1产水水量：5000m3/d(25℃)；○2产水水质：符合国家饮用水水质标准，总溶解固体低于200mg/L，PH：6.5-8.0；○3水回收率：35-45%。
