desalination

简明释义

英[ˌdiːˌsælɪˈneɪʃn]美[ˌdiːˌsælɪˈneɪʃn]

n. （海水的）脱盐，淡化

英英释义

单词用法

同义词

反义词

例句

1.Some desalination plants exist where feasible, but they are costly to run and can need constant repair.

在可行的地方有一些海水淡化厂，但它们的运营成本很高，并且需要经常维修。

2.Such channels could be used as extremely sensitive detectors or as part of a new water-desalination system.

而这样的渠道可以作为非常敏感探测器或作为一个新的水脱盐系统的一部分。

3.Having drained underground aquifers to grow inappropriate crops for many years, they have turned en masse to desalination.

在经过多年抽取地下水用于灌溉并不合适的庄稼后，他们开始进行海水淡化。

4.This costs about a third less than desalination, and cuts pollution.

此举比脱盐减少了三分之一的成本，同时能降低污染。

5.Israel argues that the water problem should be solved by finding new sources, through desalination and water treatment.

以色列主张，应该通过海水淡化和水处理的途径找到新水源来解决水问题。

6.People in the main cities now have enough water, thanks to desalination, though they still have to pay for it.

尽管一些主要城市的居民必须为用水付钱，但多亏海水淡化，他们得到了足够的水。

7.The problem with desalination is that it is very energy intensive.

淡化海水能量消耗很大，这是个问题。

8.There are environmental costs of desalination, as well.

需要注意的是，淡化海水也会产生环境成本。

9.An on-site desalination plant means that the operation generates its own water for cooling.

发电厂现场内的一个海水淡化厂提供给本厂所需的冷却水。

10.The technology behind desalination has improved significantly over the last decade.

过去十年中，海水淡化技术有了显著改善。

11.In arid regions, desalination can be a vital source of drinking water.

在干旱地区，海水淡化可以成为重要的饮用水来源。

12.Many countries are investing in desalination plants to address water scarcity.

许多国家正在投资建设海水淡化厂，以应对水资源短缺。

13.Solar energy is being used to power desalination processes in some innovative projects.

一些创新项目正在利用太阳能为海水淡化过程提供动力。

14.The process of desalination allows us to convert seawater into fresh water.

通过海水淡化的过程，我们可以将海水转化为淡水。

作文

Water is one of the most essential resources for life on Earth. However, with the growing population and increasing demand for fresh water, many regions are facing severe water shortages. One of the most promising solutions to this problem is desalination, which is the process of removing salt and other impurities from seawater to produce fresh water. This technology has gained significant attention in recent years, especially in arid regions where freshwater sources are limited.The desalination process typically involves two main methods: reverse osmosis and distillation. Reverse osmosis uses a semi-permeable membrane to separate salt and other contaminants from water, allowing only pure water to pass through. On the other hand, distillation involves boiling seawater and then condensing the steam back into liquid form, leaving the salt behind. Both methods have their advantages and disadvantages, but they ultimately serve the same purpose: to provide clean drinking water.One of the major benefits of desalination is its ability to produce large quantities of fresh water from an almost limitless supply of seawater. This is particularly crucial for coastal cities that suffer from water scarcity. For instance, countries like Saudi Arabia and the United Arab Emirates rely heavily on desalination to meet their water needs, as they have very few natural freshwater sources. By investing in advanced desalination plants, these nations can ensure a stable water supply for their populations and support economic growth.However, desalination is not without its challenges. One of the primary concerns is the environmental impact of the process. The intake of seawater can harm marine life, and the discharge of concentrated brine back into the ocean can disrupt local ecosystems. Additionally, desalination requires a significant amount of energy, which can contribute to greenhouse gas emissions if fossil fuels are used. Therefore, it is essential to explore sustainable energy sources, such as solar or wind power, to minimize the ecological footprint of desalination plants.Another challenge is the cost associated with desalination. The infrastructure required for desalination plants is expensive to build and maintain, and the process itself can be costly. As a result, the price of desalinated water is often higher than that of conventional freshwater sources. This can pose a barrier for developing countries that struggle to afford such technology, despite the pressing need for clean water.Despite these challenges, the future of desalination looks promising. Ongoing research and technological advancements are aimed at making the process more efficient and environmentally friendly. Innovations such as improved membranes for reverse osmosis and more energy-efficient distillation methods are being developed to reduce costs and minimize environmental impacts.In conclusion, desalination presents a viable solution to the global water crisis, particularly in regions where freshwater is scarce. While there are challenges to overcome, the potential benefits of providing clean, safe drinking water to millions of people cannot be ignored. As technology continues to advance, desalination may become an increasingly important part of our efforts to secure a sustainable water future for all.

水是地球上生命中最基本的资源之一。然而，随着人口的增长和对淡水需求的增加，许多地区面临着严重的水资源短缺。解决这一问题的一个有前景的方案是海水淡化，即从海水中去除盐分和其他杂质以生产淡水的过程。近年来，这项技术受到了广泛关注，尤其是在淡水资源有限的干旱地区。海水淡化的过程通常涉及两种主要方法：反渗透和蒸馏。反渗透利用半透膜将盐和其他污染物与水分离，只有纯水能够通过。另一方面，蒸馏则是通过煮沸海水，然后将蒸汽冷凝回液态，从而留下盐分。这两种方法各有优缺点，但最终都服务于同一个目的：提供干净的饮用水。海水淡化的一个主要好处是它能够从几乎无限的海水供应中产生大量淡水。这对于遭受水资源短缺的沿海城市尤为重要。例如，沙特阿拉伯和阿联酋等国在满足水需求方面严重依赖海水淡化，因为它们几乎没有自然淡水资源。通过投资先进的海水淡化厂，这些国家可以确保其人口的稳定水供应，并支持经济增长。然而，海水淡化并非没有挑战。主要问题之一是该过程对环境的影响。海水的摄取可能会对海洋生物造成伤害，而将浓缩盐水排放回海洋可能会干扰当地生态系统。此外，海水淡化需要大量能源，如果使用化石燃料，可能会导致温室气体排放。因此，探索可持续的能源来源，如太阳能或风能，以尽量减少海水淡化厂的生态足迹至关重要。另一个挑战是与海水淡化相关的成本。建设和维护海水淡化厂所需的基础设施费用昂贵，而该过程本身也可能成本高昂。因此，淡化水的价格通常高于传统淡水源。这可能成为发展中国家负担得起这项技术的障碍，尽管他们迫切需要清洁水。尽管存在这些挑战，海水淡化的未来看起来很有希望。正在进行的研究和技术进步旨在使该过程更加高效和环保。诸如改进反渗透膜和更节能的蒸馏方法等创新正在开发，以降低成本并减少环境影响。总之，海水淡化为全球水危机提供了一种可行的解决方案，特别是在淡水稀缺的地区。尽管仍需克服挑战，但为数百万人民提供清洁、安全饮用水的潜在好处不可忽视。随着技术的不断进步，海水淡化可能会成为我们努力确保所有人可持续水未来的重要组成部分。