雅思阅读海水的利用

2021年1月9日的阅读有一道海水利用的文章，这篇文章偏向科普类的文章，不是很了解的同学可以看看下文带来的分析,以及新雅思时事阅读-海水淡化。
考日期：2021年1月9日Reading passage one

Title：海水的利用

大致内容：
关于如何应对地中海地区缺水的情况，讲一个利用地壳的热能供水的project,如何利用海水，利用地热方法提取海水，得到饮用水，以及这个方法带来的其它的好处.境空的内容有mineral extraction,crust，grid, operating cost;是非无判断:NG(上一个工程的失败可以避免)F(当地人一开始很支持这个project)  T(这个机构还用了一些别的措施来帮助当地人)NC. (local audnrities campaigned against theproject)

雅思时事阅读：中水问题的希望——海水淡化

More government support, including subsidies and a favorable pricing mechani*, is neededfor the country to use desalinated seawater to quench its thirst, a top industry expert said.

"The lack of an effective pricing mechani* for desalinated water and support for an operablepolicy is affecting the development of the country's sea desalination industry," said Li Linmei,director of the State Oceanic Administration's Institute of Seawater Desalination andMultipurpose Utilization in Tianjin.

The country aims to produce 2.2 million cubic meters of desalinated seawater daily in 2021,about three times current capacity, according to a National Development and ReformCommission plan released last year.

Current domestic water prices range from 2.4 yuan to 4.9 yuan a metric ton in the coastalregions, while the price of water for industry ranges from 3.3 yuan to 7.9 yuan a ton, accordingto ChinaWaterNet.

However, desalination plants can produce 674,000 tons daily at a cost of about 5 yuan ($0.80)a ton - not including infrastructure such as pipelines.

Li said the government should consider bringing desalinated water into the water grid.

Aside from subsidies and funding for pilot programs, Li believes desalination is a key part ofwater security.

"The seawater desalination industry is as important as water conservancy projects for China tocope with its water shortage," Li said.

China suffers from severe water shortages, nearly 54 billion cubic meters on average everyyear. This means that more than 66 percent of cities experience water shortages.

To compound that difficulty, water consumption is expected to surge to about 700 billion cubicmeters in 2030, up from 600 billion cubic meters.

Facing such a severe shortage, authorities are taking measures.

In March, the NDRC identified the regions and companies selected to carry out the firstdesalination projects, including heavily populated areas such as Zhejiang and Hebei provinces,and the municipalities of Shenzhen and Tianjin.

The commission asked regions and companies to encourage desalinated water use forindustrial and domestic purposes.

The industry is expected to get a 10-billion-yuan boost from the plan.

Li said the policy showed the country's determination and confidence in boosting the industry.

Key technology

Reverse o*osis technology and other areas of development vital for desalination have beenmastered, Li said.

O*osis technology pushes water under high pressure through fine membranes, filtering thesalt.

Coupled with the distilling process of high-pressure steam and evaporators, this means that thetechnology is, in more ways than one, on tap.

The country has 16 seawater desalination plants with a daily capacity of more than 10,000metric tons of fresh water, according to the NDRC.

"Although we have made great progress in technology, large-scale plants in China still dependon foreign technology," Li said.

Desalination is used in more than 150 countries to supply water to more than 200 millionpeople.

The Tianjin Institute of Seawater Desalination and Multipurpose Utilization is strengtheninginternational cooperation to raise China's domestic seawater desalination technology and boostexports, Li said.

There are concerns about the potential environmental effects of large-scale seawaterdesalination plants, especially wastewater discharges.

Li said the government should launch an environmental asses*ent before any major upgrade.

尽管中已将海水淡化视为解决沿海未来淡水资源短缺的措施之一，但是业内认为，淡化水的广泛应用仍存在一定难度。

海洋局天津海水淡化与综合利用研究所所长李琳梅在接受本报专访时指出，“尚未形成有效淡化水价格机制以及缺乏具体可操作的优惠政策在一定程度上影响了中海水淡化产业的发展。”

相关数据显示，我海水淡化装机能力为67.4m3/d，海水淡化水综合成本价格约为5元/吨左右。

中水网显示目前我沿海居民生活用水价格介于为2.4元/吨~4.9元/吨；工业用水价格3.3元/吨~7.85元/吨。与自来水相比，淡化水显然没有价格优势。

李琳梅提出，为了促进中海水淡化产业的发展，先要将海水淡化水视为计划障水资源安全的重要组成，将淡化水纳入水资源配置体系和区域水资源规划。同时，*应为公益性海水淡化工程提供补贴。

根据去年发展改革委员会发布的《海水淡化产业发展“十二五”规划》，到2021年，海水淡化产能规模将达到220万立方米/日以上，约为目前产能的3倍。

该规划还提出，到2021年，海水淡化对解决海岛新增供水量的贡献率达到50%以上，对沿海缺水地区新增工业供水量的贡献率达到15%以上。

李琳梅指出，目前中海水淡化技术发展已基本成熟，但其市场的培育和发展需要实质性的产业政策支持。

她认为财政应设立专项资金，用于支持具有自主新的海水淡化技术及其规模化示范的点项目。

李琳梅说：“作为中应对水资源短缺的措施，海水淡化与水资源计划护同等重要。”

根据水利部发布的统计数据，我年平均缺水量接近540亿立方米，66%以上的城市受到水资源短缺的困扰。

水资源缺口仍在不断扩大。到2030年，年水资源消耗量将由目前的600亿立方米增至7000亿立方米。

面对如此严峻的水资源短缺，开始采取措施以推动海水淡化产业发展。

三月份，发改委公布了批海水淡化工程点区域和企业，浙江、河北、深圳和天津均榜上有名。

发改委要求点区域和企业积促进将淡化水应用于工业和住宅。

发改委预计，海水淡化设备的快速发展将使该行业年均增长达10亿元。

李琳梅说，这些政策初步显示了推动海水淡化产业发展的决心和信心。

中海水淡化技术

李琳梅说，经过50多年的研究，我已经掌握了反渗透海水淡化技术和低温多效蒸馏海水淡化技术。

反渗透技术利用高压推动水通过膜分离出盐，而低温多效蒸馏则由多组成，通过利用低压蒸汽以产生高纯水。

发改委表示，2021年我产水量高于10000立方米/天的海水淡化工程有16个。

“尽管我们在海水淡化技术域已经取得了长足的进步，但目前内大型海水淡化工程仍主要使用外技术。”李琳梅这样表示。将产海水淡化技术应用于工程实践，是提高我海水淡化自主新能力的关键。

至2021年，海水淡化工程已被应用于世界上150多个，解决了2亿多人的饮水问题。

李琳梅说，目前淡化所正积开展际合作，以提升我自主海水淡化技术在际市场中的地位，促进产淡化设备大规模向外输出。

面对迅速发展的中海水淡化产业，也有人对大规模海水淡化工程的潜在环境影响表示担忧。因为浓海水排放可能会影响临海水域的水质，引起受纳海域盐度、温度的升高。

李琳梅表示*应对高盐度浓海水的排放进行环境影响评估，并提供排放标准。