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海水淡化制饮用水

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海水淡化制饮用水字数作文

篇一:海水淡化与饮用水

海水淡化与饮用水

水是生命之源。人要维持生命就得饮水,人要延年益寿就得饮用无污染和有健康作用的水。不仅人的生命离不开水,工农业生产也都离不开水。所以,水对人类的生存发展至关重要。特别是在人类面临缺水的严峻情况下,解决水的问题引起了全世界的关注。“水不久将成为一种严重的社会危机。石油危机之后的下一个危机便是水”,联合国早在1977年召开的水问题大会,就向全世界发出了上述警告。 海水淡化一般分为两大类:

? 蒸馏法海水淡化技术

蒸馏法是通过加热海水使之沸腾汽化,再把蒸汽冷凝成淡水的方法。蒸馏法海水淡化技术是最早投人工业化应用的淡化技术,特点是即使

在污染严重、高生物活

性的海水环境中也适

用,产水纯度高。与膜

法海水淡化技术相比,

蒸馏法具有可利用电

厂和其他工厂的低品位热、对原料海水水质要求低、装置的生产能力大,是当前海水淡化的主流技术之一。

? 反渗透(RO)海水淡化技术

反渗透是利用压力使溶液中的水通过半透膜而分离出来,因为它和自然渗透的方向相反,故称为反渗透。与蒸馏法相比,反渗透法具有以下突出的优点:

①.反渗透海水淡化过程不发生相

变化,所以,它是最节能的海水淡

化方法;

②.设备简单,效率高;

③.占地面积小;

④.操作方便,控制容易;

⑤设备投资低,建设周期短。

其主要缺点是对进水水质要求较高。

实例:据报道沙特60年代就大规模发展海水淡化产业了,成立了海水淡化总公司,全面负责海水淡化工程建设和管理。他们已建立了2(转 载于:wWw.SmHaIDA.cOM 海达 范文 网:海水淡化制饮用水)5个世界大型海水淡化厂,修建了一条世界最长的海水淡化输水管线,管线直径1.5米,长466公里,

由东部把淡化水输送到首都利雅得。沙特的海水淡化产业不

仅解决了西部缺水问题,还为1/3地区提供了电力。

篇二:海水淡化与饮用水

海水淡化与饮用水

水是生命之源。人要维持生命就得饮水,人要延年益寿就得饮用无污染和有健康作用的水。不仅人的生命离不开水,工农业生产也都离不开水。所以,水对人类的生存发展至关重要,特别是在人类面临缺水“水不久将成为一种严重的社会危机。石油危机之后的下一个危机便是水”的严峻情况下,解决水的问题引起了全世界的关注。联合国早在1977年召开的水问题大会,就向全世界发出了上述警告。

将近30年来,无论是发展中国家还是发达国家,解决水的问题已经成为保证人们正常生活和经济可持续发展的重要任务。解决饮用水的任务有三,第一要有水饮用,解决缺水问题,第二不能饮用有污染的水,解决水防污染问题,第三要饮用对人体有健康作用的水,解决饮用水的活化处理问题。饮用水这三个方面的任务,虽有轻重缓急不同,但从保证人的健康看,都是必须解决,统筹发展。本文联系解决饮用水任务的三个方面,讨论我国发展海水利用和淡化海水做饮用水的问题和建议。

“水”是人类的永恒课题

从宇宙飞船看地球,地球是一个兰色的水球。但是,这个大水球中可供人类直接使用的淡水却不到3%,而且,其中绝大部分,约88%的水人类很难用上,它们是以冰的状况存在于南极和北极,可供人类使用的只剩下12%的江河、湖泊和地下水。地下水还不能超量采用,否则会引起地面下沉,给人们带来灾难。地球上这3%的水又是处于变化中,海洋和陆地的水接受太阳热量蒸发成汽升腾到大气中,大气又使水蒸气降温形成雨和雪落回大地,造就了地面上的河流、湖泊和部分地下水。而雨雪落回地面的时空分布是很不均匀的,这就造成了地球上水资源时空分布不均衡,造成有些地区,有些时间洪涝和干旱不断发生。随着世界人口增长和人们生活水平的高级化、多样化和经济的

迅速发展,使人类对水的需求量又越来越大,加上人们对自然生态环境的破坏和对水的污染,无疑是对一些干旱,半干旱国家雪上加霜。所以解决缺水,包括解决资源性缺水和污染性缺水对人类的生存发展将是一个永恒性的课题。

关于缺水问题,国际上有一个公认的衡量标准,一般认为这个国家的人均每年占有可更新淡水量,在1700吨以下,视为缺水国家,在1000吨以下视为严重缺水国家。目前,世界上占人口的40%,80多个国家严重缺水。中东地区缺水最为严重。沙特每年人均占有水量只是249吨,科威特95吨,以色列300吨,埃及936吨。缺水不仅影响一个国家经济发展和人们的正常生活,而且还将引起国家间冲突。联合国全球变暖问题研究小组主席、著名气象学家约翰.堆顿爵士认为,随着全球变暖导致一些对立国家为争夺日益减少的水资源发生冲突,21世纪将爆发水资源战争。1993年第47届联大决定每年3月22日为“世界水日”,号召世界各国对全球普遍存在的水资源紧缺和水污染问题引起警觉,并开展相应活动,提高公众的水患意识,是非常正确的。

我国也是一个严重缺水的国家。虽然水资源有2.8万亿m3,居世界第六位,人均资源量有2220m3。但是联合国把我国也列入贫水国家之列,因为我国水资源时空分布极不均衡,水资源时间集中,每年汛期连续4个月,水资源中有2/3是洪水很难利用。水资源的地区分布不匹配,黄河、淮河、海河流域,土地面积占全国的13.4%,耕地占39%,人口占35%,gdp(国内生产总值)占32%,可水资源量仅占7.7%,人均约500m3。近几年长江以北地区连续干旱,天津市去年已经动用了潘家口水库的死库容,又紧急开始了引黄济津的应急调水工程。威海市去年为对付“缺水” 制定了超过用水定额1 m3 水费加价40倍的措施。加之水的污染,我国多雨水的南方也不同程度的存在着污染性缺水,有的地区还相当严重。所以,面对“缺水”的严重局面,要确保人们正常生活和国民经济的可持续发展,解决缺水的问

题,也是我国一个长远性的战略任务。

人类能够战胜“缺水”危机

只要各国人民在解决水的问题上永不懈怠,积极开源节流,积极进行水利工程建设,发展农业滴灌等节水工程,发达国家能够对穷困地区伸出援助之手,就一定能够战胜世界性的“缺水”危机。中东早就是“缺水”地区。他们利用发达国家的技术发展海水利用和海水淡化,发展农业滴灌工程对缓解本国淡水紧缺的危机起了重要利用。他们的经验是值得关注的。

我国在水问题上既有水多(洪、涝)的麻烦,又有水少(干旱)的担忧。我们必须有一个长远的防洪方案、一个战胜干旱的开源节水方案、一个强有力的防止水污染方案,加上贯彻得力、我们也完全可以战胜“缺水”的困扰。

当前,我们在战胜“缺水”的问题上,认识还不统一,步调还不一致,贯彻不得力,甚至还存在制造“缺水”的严重现象。例如我们的工农业生产中和人民生活上对水的浪费很大,严重忽视节流;在开源上比较看重引水,却对雨水的利用,对城市污水的利用,特别是对取之不尽的海水利用不够重视不够重视,对河流、湖泊的水土保持、对防止水污染不重视,因此说,当前我国水的开源和节流局面是不理,想的。就其原因,主要是缺乏水资源意识、缺乏水资源忧患意识,缺乏保护水土生态环境意识,因此,造成植被破坏,水土流失,河流、湖泊、地下水污染严重的局面。

观念是行动的指导。我国应该利用每年的“世界水日”开展水资源意识、水资源忧患意识,保护水土生态环境意识的宣传活动,提高公众的水患意识。特别是让我们的各级干部对水患警觉起来是很重要的。我们是社会主义国家,从理论上说是最讲人类可持续发展的国家,我们在水资源可持续利用问题上,

应努力成为世界的榜样。

发展海水利用和海水淡化的重大意义和途径

地球上97%以上的水是人类难以直接利用的海水。这个巨大的海水水体蕴藏着 取之不尽、用之不竭的巨量淡水资源和其他丰富的物质资源。当前,人类在面临陆上淡水紧缺和物质资源不断的威胁下,开发利用占96.5%的淡水资源和占3.5%的各种丰富的矿物资源是发展的必然趋势。对我国来说开发海水利用,也是解决缺水困扰,发展国民经济、建设海上强国具有重大的战略意义战略措施。

但是,对开发利用海水资源,缓解我国缺水形势的战略意义,在我国尚未引起足够重视。海水水资源的开发利用有海水直接利用和海水淡化利用。海水直接利用的用水量很大,缓解沿海工业城市缺水起着重要作用。据统计,沿海城市用水总量的80%以上是工业用水,而工业用水的80%以上是工业冷却水。目前,发达国家沿海城市中的电力、冶金、化工、石油、煤炭、建材、食品等工业,以海水做冷却水已达90%以上。我国的大连、青岛、天津、上海等沿海城市企业也已开始用海水冷却、冲洗、印染、化盐了,但还远不及发达国家。利用海水冲厕,我国香港特区已有近40年的历史,而我国沿海缺水城市中,还没有一个城市利用海水冲厕的。

海水淡化利用在国外发展也很快。据1998年国际脱盐协会调查报告统计,全世界100m3/d以上的海水淡化装置共计12451台,造水总量已达2273.5万m3/d。比上一个调查周期的统计数,台数增加39%,造水总量增加64%。特别是中东一些国家发展更快。据报道沙特60年代就大规模发展海水淡化产业了,成立了海水淡化总公司,全面负责海水淡化工程建设和管理。他们已建立了25个世界大型海水淡化厂,修建了一条世界最长的海水淡化输水管线,管线直径1.5米,长466公里,由东部把淡化水

输送到首都利亚得。沙特的海水淡化产业不仅解决了西部缺水问题,还为1/3地区提供了电力。近20年来,我国海水淡化有了较大发展,不少岛屿建立了供居民饮水的海水淡化厂,沿海工业,如发电厂已经开始用海水淡化供做锅炉用水。但是总的看,发展也不快。

就其原因还是认识和习惯势力问题。当前要加快我国海水利用及其产业发展,必须加大宣传力度,不仅加大宣传水患意识力度,还要加大海水利用的科普宣传力度,要使人们充分认识到海水利用的重大意义和现实可行性。同时也要有一个加快发展海水利用及其产业的正确途径。我们认为发展海水利用必须以效益为中心,从技术和工艺管理上对降低成本下工夫;在科研成果产业化和国外先进技术国产化基础上,积极发展海水综合利用;采用国家支持的海水利用示范工程和示范区建设,以点带面,发展联合企业等手段,是加快海水利用和海水淡化及其产业发展的重要途径。我们希望象天津、青岛、烟台、大连、舟山等严重缺水的城市,能率先大力发展海水利用和海水淡化,国家支持的示范工程、示范地区建设,首先能在这些城市开发结果。

关注海水淡化饮用水的活化处理

海水利用和海水淡化只能解决饮用水的资源性和污染性缺水问题,还没有解决饮用健康水的问题。因为淡化海水是一种蒸馏水或纯净水。而蒸馏水和纯净水,根据近年来一些专家的研究和试验,发现是一种不含氧,含有有害挥发性物质的退化水。长期饮用对人体健康不利,会导致骨质疏松、神经麻痹等症状。几年前上海市政府已不允许幼儿园孩子饮用纯净水了。目前,这个问题尚未引起全社会的关注。市场销售不经过活化处理的蒸馏水、纯净水还很普遍。所以大力推进海水淡化作饮用水的同时,必须跟着解决淡化海水上活化处理工艺的问题。做到这一点,除企业的努力外,还必须有国家相应政策规定和

篇三:海水淡化与饮用水

附录

英文原文

Desalination and water

1 Introduction can not be separated from water, industrial and agricultural production are inseparable from the water. Therefore, water for human survival and development is crucial, especially in the human face water shortages, "water will soon become a serious social crisis. After the oil crisis of the next water crisis is" a serious case, solve the water has aroused worldwide attention. As early as 1977, the United Nations to convene the General Assembly of the water on to the world the warning was issued.

Nearly 30 years, both developing and developed countries to address the water issue has become to ensure that people live a normal life and sustainable economic development an important task. To solve the task of drinking water there are three, the first having water to drink, to solve the problem of water shortage, and the second could not have contaminated drinking water, address water pollution problems, the third to drink a healthy effect on the human body of water to address the drinking activated to deal with the issue of water. These three aspects of drinking water mission, although of different priorities, but the health of the guarantor, is the need to address co-ordinate the development. This article links the task to solve the three aspects of drinking water to discuss the development of our country use and desalination of sea water so the problem of drinking water and recommendations. 2 "Water" is the eternal subject of human

On the problem of water shortage, there is a recognized international standard, is generally believed that the country's per capita share of renewable fresh water annual volume of 1700 tons in the following, as a dry country, 1,000 tons in the following countries as a serious water shortage. At present, the world's population

accounted for 40% of severe water shortage in more than 80 countries.

The most serious water shortage in the Middle East. Saudi Arabia of water per capita per year is only 249 tons, 95 tons of Kuwait, Israel, 300 tons, 936 tons of Egypt. Water shortage not only affects a country's economic development and people's normal life, but also caused by inter-State conflicts. United Nations panel on global warming, the President, the famous meteorologist John. Heap Lord that with global warming led to a number of opposing countries to compete for dwindling water resources in conflict, the outbreak of the 21st century will be water wars. 1993 47th session of the General Assembly decided on March 22 each year as "World Water Day", calling on other countries on the global prevalence of the problem of water shortage and water pollution caused by vigilant and carry out corresponding activities to raise public awareness of flooding is very correct.

the inclusion of the United Nations to China's water-poor countries, because of our spatial and temporal distribution of water resources extremely uneven, the time focus on water resources, flood season every year for 4 months, water in 2 / 3 is difficult to make use of the flood. The regional distribution of water resources do not match, the Yellow River, Huaihe River, Haihe River Basin, the country's total land area of 13.4%, accounting for 39 percent of arable land, population accounts for 35%, GDP (gross domestic product) accounted for 32% of the water resources account for only 7.7% per capita of about 500m3. In recent years, the area north of consecutive drought in the Yangtze River, has been used in Tianjin last year Panjiakou reservoir dead storage, but also the beginning of the Yellow River to Tianjin urgent emergency water diversion project. Weihai last year to deal with "dry" the development of more than 1 m3 of water a fixed water charge increases 40-fold measures. In addition, water pollution, China's more rain in the South also exists in varying degrees of water pollution, some areas also very serious. Therefore, in the face of "dry" a serious situation, it is necessary to ensure that people live a normal life and the sustainable development of the national economy, to solve the problem of water shortage and also

a long-term strategic task.

3 Human beings be able to overcome the "water" crisis

As long as people of all countries in addressing the issue of water ways, and

actively increase income and reduce expenditure, and actively carry out the construction of water conservancy projects, the development of agriculture and other water-saving drip irrigation projects to poor areas of developed countries to lend a helping hand, we will certainly be able to overcome the world " water shortage "crisis. The Middle East has long been a "dry" areas. They use the technology developed water use and desalination, drip irrigation projects on agricultural development to Issues in our country both in the water more than water (floods) of the trouble, and little water (drought) concerns. We must have a long-term flood protection program, a defeat of the open source of water-saving programs of drought, a strong program to prevent water pollution, and implement effective, we can overcome the "water" problems.

At present, we have overcome the "water" issues, awareness is not uniform, the pace is also inconsistent, were not effective, implement, and even the existence of creating "water shortage" a serious phenomenon. For example, industrial and agricultural production in our daily life and the people waste a lot of water, serious neglect of expenditure; more important in open water, but the use of rainwater, the use of urban sewage, especially for not taking water do not pay enough attention to not pay enough attention to the use of rivers, lakes, soil and water conservation, do not attach importance to the prevention of water pollution, so that the country's water sources of funds and the situation is ignored, think. On its causes, mainly the lack of awareness of water resources, the lack of a sense of crisis of water resources, lack of awareness of the ecological environment of water and soil protection, therefore, resulting in the destruction of vegetation, soil erosion, rivers, lakes, groundwater pollution a serious situation.

The idea is to guide action. China should take advantage of the annual "World

Water Day" to carry out the awareness of water resources, water resources, a sense of urgency to protect the ecological environment of water and soil awareness campaigns to raise public awareness of the flooding. In particular, so that our cadres at all levels up to flood alert is very important. We are a socialist country, from the theory is most concerned about sustainable human development countries, we have the issue of

sustainable use of water resources, efforts should be made an example to the world. 4 The development of desalination of sea water use and the significance of and

means

More than 97% of Earth's water is difficult to direct human use of water. This huge body of water contains water inexhaustible volume of fresh water resources and other wealth of material resources. At present, land in the face of human and material resources of fresh water scarcity a constant threat, the development and utilization accounted for 96.5% of fresh water resources and accounting for 3.5% of a variety of rich mineral resources is the inevitable trend of development. For the development of China's water use, is to solve water shortage problems, developing the national economy and building a great maritime power of the strategic significance of strategic measures.

However, the development and utilization of sea water to ease the water shortage situation in China's strategic significance, in our country has not yet attracted sufficient attention. The development and utilization of water resources have a direct use and desalination of sea water use. The direct to ease the water shortage in statistics, the coastal city of water more than 80% of the total water, industrial water and more than 80% of the industrial cooling water. At present, the developed coastal cities in the electric power, metallurgical, chemical, petroleum, coal, building materials, food industry, to do water cooling water has reached 90%. China's Dalian, Qingdao, Tianjin, Shanghai and other coastal cities have also started the use of seawater for cooling, washing, printing and dyeing, chemical salt, but also far less than developed countries. The use of sea water for flushing, the Hong Kong SAR of China's nearly 40-year history, and China's coastal cities, water shortages, there is not

a city to use sea water for flushing.

The development of desalination use abroad soon. According

to the International Desalination Association 1998 survey statistics, the world's 100m3 / d of desalination device for more than a total of 12,451 units, making the total amount of water has reached 22.735 million m3 / d. Than in the previous survey cycle statistics, the number increased by 39%, making the total increase of 64% water. In particular, Arabia's 60 desalination on a large scale industries and set up a desalination Corporation, has overall responsibility for project construction and management of desalination. They have established the world's 25 large-scale desalination plant, the construction of a desalination water supply world's longest pipeline, pipeline diameter and 1.5 meters long and 466 kilometers from the eastern part of the desalinated water supply to the capital, Riyadh. Saudi Arabia's desalination industry have not only solved the problem of water shortage in the western region, but also for the 1 / 3 region with electricity. Over the past 20 years, China has made significant development in desalination, a number of island residents for the establishment of a desalination plant drinking water, coastal industries, such as power plants have begun to do with the boiler for water desalination. In general, however, development is not fast.

On the understanding of its causes and the force of habit or problem. To speed up China's current water use and industrial development, we must step up publicity to increase awareness of flooding not only the awareness of efforts to increase the water use of the popular propaganda, to make people fully aware of the significance of water use and practical sexual. At the same time to speed up the development of a water use and the correct way to industry. We believe that the development of water use efficiency must be, from a technical and process management efforts to reduce costs; the use of state-sponsored demonstration project to use sea water and the construction of the demonstration zone, a point to face, the development of joint ventures and other means of speeding up the desalination of sea water and its use and an important way of industrial development. We hope that, like Tianjin, Qingdao,

篇四:海水淡化用饮用水级活性炭

饮用水安全产品卫生许可批件 颗粒活性炭

椰壳活性炭

河南省涉及饮用水卫生许可批件

颗粒活性炭 批准文号:(豫)卫水字(2011)第0038号 批准日期:2011年8月30日

涉水卫生许可批件

果壳活性炭指标(执行标准GB/T13803.2--1999)

椰壳活性炭选用优质椰壳、桃壳、杏壳为原料,采用先进的工艺和设备,经炭化,水蒸气高温活化而成,外观为黑色颗粒,具有孔隙发达,吸附能力强,强度好,化学性稳定,颗粒均匀等优点,主要用于饮用水、纯净水、饮料、制酒、工业用水,电厂、污水及水质的深度净化以及贵金属提炼,渗银专用活性炭。 主要技术参数:

饮用水安全产品卫生许可批件 石英砂滤料 饮用水安全产品卫生许可批件 碳酸钙PH调节剂 疾病预防控制中心—检测报告 建业牌活性炭 疾病预防控制中心—检测报告 建业牌石英砂滤料 疾病预防控制中心—检测报告 建业牌碳酸钙滤料

海水淡化项目用颗粒活性炭:http://www.gyjyjs.net

篇五:海水淡化用饮用水级颗粒碳酸钙

海水淡化用饮用水级颗粒碳酸钙

涉及饮用水卫生安全产品卫生许可批件

(碳酸钙滤料、碳酸钙PH调节剂 批准文号:(豫)卫水字(2011)第0036号) (石英砂滤料 批准文号:(豫)卫水字(2011)第0039号)

(活性炭滤料、颗粒活性炭批准文号:(豫)卫水字(2011)第0038号) 申请单位:巩义市建业净水材料有限公司

河南省疾病预防控制中心 —检测报告

建业牌活性炭 建业牌碳酸钙滤料 建业牌石英砂滤料

送检单位:巩义市建业净水材料有限公司

河南省涉及饮用水卫生许可批件

碳酸钙滤料 批准文号:(豫)卫水字(2011)第0036号

批准日期:2011年8月29日

一、碳酸钙滤料的物理特性:

是一种矿物质,它具有孔隙发达,吸附强,广泛用于海水淡化,调节PH值,是大、中、小自来水公司理想产品。是一种无机物离子交换剂的去除作用,在水中还可与其他Ca+Mg+Cs+K+Na+等均衡量重金属阳离子进行交换以降低水的总硬度,另外它还有面积大,内部静电强,使你的水质能达到排放和饮用水质达标的理想产品。(目前天然的净水碳酸钙颜色为白色颗粒和青灰色颗粒两种,可根据用户需要定制不同的规格).

碳酸钙滤料的特点: (1)吸附力强 所谓吸附乃是具有多孔性、巨大表面积的固体全部溶化作用,而发生化学的、物理的反应。碳酸钙作为触媒剂和水作用时,有下面两种情况: 物理的吸附#是把触剂(介质)表面吸附的原子吸过来,成为+离子和-离子的作用,吸附作用受粒度、离子化、温度三个因素影响。 化学的吸附#是分子间的溶剂作用,使其分解成为+离子和-离子。分解中的原子、离子,被吸附在其他物质上。 碳酸钙滤料的作用: 这种吸附有一个中子耦合和二个电子耦合,碳酸钙是二个电子耦合。 碳酸钙作为中药对皮肤病,特别是拔脓,效果很好。碳酸钙是多孔性的,吸附能力很强,主要成份为碳酸钙。在前面介绍的碳酸钙微细粉末的电子显微镜照像中,已确认是海绵状多孔性的,是其最大的原因。也就是说,因多孔性,那么表面就非常大,由于长石部分风化,成高岭土状等,故始终保持很强的吸附作用、交换作用。 碳酸钙吸附能力非常强的这一特性,由许多实验得到了证实。碳酸钙:http://www.gyjyjs.net/ 海水淡化历史

21世纪以前,反渗透膜技术都是被国外所垄断,而中国是直到90年代末期才开始掌握了反渗透膜的生产技术.这个历史要追述到建国初期,当时我们国家的领导人已经意识到海水淡化的前景和将来在社会中的作用。 早在1958年,石松研究员等首先在我国开展离子交换膜电渗析海水淡化研究。而在此前1953年美国C.E.Reid建议美国内务部将反渗透研究列入国家计划。

随后1967年,国家科委组织全国海水淡化会战,组织全国在水处理和分析化学、材料化学、流体力学等各个学科的精英会战海水淡化。

1970年,会战主力汇集我国浙江省的杭州市,组织了全国第一个海水淡化研究室。此期间,他们一直用电渗析技术进行海水淡化,研制成功海洋监测专用微孔滤膜,建成了世界最大的电渗析海水淡化站——西沙永兴岛海水淡化站。一度在海水淡化方面成为世界领军人物。

1982年,中国海水淡化与水再利用学会经中国科协学会部批准在杭州成立。但是,因为经历了十年浩劫,毕竟还是衰弱下去了,此时,远在大洋彼岸的美国的全芳香族聚酰胺复合膜及其卷式元件已经赫然问世。

1984年,国家海洋局以海水淡化研究室为主体,组建国家海洋局杭州水处理技术研究开发中心,中国开始对膜技术重视了,但是,美国海水淡化用复合膜及其卷式元件已经大面积商业化了,投入到了国家和民用中去了。 1992年,国家为了追赶膜方面技术与世界的差距,国家科委军顶,以国家海洋局杭州水处理技术研究开发中心为依托,组建国家液体分离膜工程技术研究中心,并开始悄悄研制国产反渗透膜。

直到2001年,国际海洋局杭州水处理技术研究开发中心实行集团化分体管理,所辖三个控股的中外合资公司,两个中资公司和一个研发中心。

同年,杭州北斗星膜制品有限公司正式公开问世,从此,中国有了自己的反渗透膜产品,享有完全自主知识产权、由中国制造、具有民族品牌的高性能复合膜元件开始投放市场,中国成为世界上第四个掌握自主反渗透膜技术的国家。而杭州水处理下的杭州北斗星膜制品有限公司也成为全球八家自主反渗透膜生产厂家之一。也称为RO膜。我们无法去追究是工业文明还是人口无休止的增长使我们面临了这场水的危机:早在70年代中期,由于众多的河流遭到严重污染,全世界有70%的人无法保证卫生、安全地用水。淡水资源的日益匮乏,使人们一再把目光投向浩瀚的海洋,只要将导致海水又苦又咸的盐类物质从中去除,就能获得淡水。地中海中部的马耳他,建有世界上最大的反渗透海水淡化厂。海水在这里乖乖地缴械投降,变成卫生的淡水,为岛上的3万居民和前来观光的旅游者提供忠实的服务。

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