Chinese Breakthrough Turns Seawater Into Fresh Water Without Electricity | WION Podcast
中国取得技术突破：无需用电即可将海水转化为淡水
A revolutionary new technology from China could change the future of clean drinking water. Researchers have developed a system that converts seawater into fresh water without using electricity, making it cheaper than bottled water.
中国一项颠覆性新技术或将彻底改写洁净饮用水的供给格局。科研人员研发出一套海水淡化系统，全程不需要消耗电力，淡化后的淡水成本比瓶装水还要低廉。
Welcome to the We on podcast, where we explore fascinating stories and ideas from various fields. In this episode, we explore how a breakthrough technology from China could turn seawater into affordable drinking water without using electricity, offering a promising new solution to the global water crisis. It's an innovation that could reshape how the world thinks about clean water.
Scientists in China have developed a new solar-powered desalination technology that can turn seawater into fresh water without electricity.
Desalination has always been an energy-hungry process that turns salt water into fresh water, making it largely the preserve of rich nations with abundant fossil fuel reserves. Desalination usually requires a huge amount of energy and is often expensive. However, researchers have created a new material that uses sunlight more efficiently, making the process much cheaper.
The researchers have designed a specialized method to weave nanoparticles into a three-dimensional photothermal evaporation material that absorbs solar energy to drive desalination. The tests showed that the material achieved a solar absorption rate of up to 90.2% while cutting the energy required to evaporate the same volume of seawater by 45.7%.
The system successfully converted seawater into fresh water using only natural sunlight without depending on any external power sources. The process was conducted at a small trial site, in which the fresh water produced was enough to irrigate 5 square meters of farmland for a full growth cycle.
After 2 years, the team believed that using this technology, the cost of producing water would reduce below that of bottled water, offering a low-cost and sustainable solution to water shortages, especially in regions with limited access to electricity.
中国一项突破性技术：无需外接电力，就能把海水转化成平价饮用水，为全球水资源危机提供极具前景的全新方案。这项创新或将彻底改变全球获取洁净水源的思路。
中国科研人员研发出一款全新太阳能海水淡化技术，全程不用电力即可实现海水淡化。
传统海水淡化工艺十分耗费能源，以往只有化石燃料储备充足的富裕国家才有条件大规模应用。常规淡化设备能耗巨大，运行成本居高不下。而科研团队研发出一种新型材料，能大幅提升太阳能利用率，显著降低淡化成本。
研究人员通过特殊工艺将纳米颗粒织造成三维光热蒸发材料，依靠吸收太阳能驱动海水淡化。实验数据显示，该材料光能吸收率最高可达90.2%，蒸发同等体量海水所需能耗直接降低45.7%。
这套设备仅依靠自然光就能完成海水淡化，完全不需要外接电源。小型试验场地的实测结果表明，产出的淡水足以满足5平方米农田一整个生长周期的灌溉用水。
研发团队预估，经过两年落地优化后，该技术的产水成本将低于瓶装水。对于电力匮乏地区而言，这是一套低成本、可持续的缺水解决方案。
以下是印度网友的评论：
glennjensen3313
Thank you China Love You.
感谢中国，我爱中国。
MervynGrant-ou7ex
Great Discovery China , Great Information China !
中国这次的技术发现太棒了
AnandDharwar
Actually the technology is pretty simple. A se fixed on a black metal plate is suspended below the tempered glass cover on a solar evaporator. A black cotton cloth dip in the sea water kept in the evaporator works as a wick causing the sea water to rise up to the se and gets heated up to form hot vapour which rises up further to be deposited as condensation on the underside of the tempered glass , rolling down to be collected as pure water. Simple technology which could be replicated all over the world to treat most kinds of polluted waters, provided sunlight is available. A further tweak to improve productivity is to preheat the input water using the heat from sunlight. This would help more water to be distilled in unit time.
其实这项技术原理很简单。太阳能蒸发器里，一块海绵固定在黑色金属板上，悬挂在钢化玻璃罩下方。蒸发器内有海水，一块黑色棉布泡在水里充当吸水棉芯，把海水吸到海绵上。海水受热变成水蒸气，往上飘，碰到钢化玻璃底部就凝结成水珠，顺着玻璃流下来收集起来就是纯净水。只要有阳光，这套简易设备全球都能复刻，还能处理大部分污水。如果再做一点改良，利用太阳能提前预热待处理的水，单位时间内能蒸馏出更多淡水，提升产水效率。
georgekwk
So.... Why are other countries not doing it
那为什么别的国家一直没研发出来？
Joseph-1992
Very cool!
中国太厉害了！
ChinaSongsCollection
I don't think that's what they are doing.
This sounds more like a primary school science project than an international science breakthrough
我觉得实际原理没说的这么厉害。这听着更像小学生科学实验，算不上世界级重大科研突破。
georgekwk
And they will share the benefits of cheaper clean water to the rest of the World
而且他们会把这种低成本净水技术分享给全世界。
KittyKLovely
Absolutely Brilliant
中国实在太出色了
Ivan-lo8li
Right on guys !!
说得太对了各位！
2dooroldford
Solar power is still electricity
太阳能本质上还是电能
obodyImportant-m1x
Basically, its just solar evaporated sea water?
说白了不就是靠太阳晒蒸发海水吗？
chasefancy3092
If the China could teleport human beings from one country to another, it wouldn't surprise me one bit. The Chinese Party woke up in 1997. They KNOW this entire universe is a simulation. The one country in this world you can NEVER underestimate is China
就算中国研发出跨国人体传送技术，我都不会觉得意外。中国从1997年起就彻底觉醒，他们看透整个宇宙如同虚拟程序。世界上任何国家都绝对不能小看中国。
bobbyeapen6049
Guaranteed this was stolen American tech.
我敢打包票，这项技术肯定是偷美国的。
theanxousone1
U.s. is run by the kind of people if they had this tech they wouldn't share it with their own people anyway
掌控美国的那群人，就算本国掌握这项技术，也不会分享给普通民众。
WesTheWizard
I don't know, but the Chinese do have a knack for stealing other countries' technologies. We caught a Chinese spy in our own company red-handed. They're freaking everywhere
不好说，但中国很擅长窃取别国技术。我们公司当场抓到过中国间谍，这类人到处都是。
bobbyeapen6049
@WesTheWizard What happens way too often. It should be considered an act of war
这种事情屡见不鲜，这种窃取技术的行为完全可以视作战争行为。
matthijsvanveen
robin hood that tech to the rest of world
希望这项技术能像罗宾汉一样普惠全世界
ChinaSongsCollection
Sour grapes
纯属吃不到葡萄说葡萄酸
bobbyeapen6049
@ChinaSongsCollection I prefer sweet grapes...
我喜欢吃甜葡萄
OmegaXYT
Something that seems beneficial for people's health? 0% chance the US would ever make that, have you seen the amount of chemicals they put in their food and drinks?
这种真正造福民众健康的技术，美国根本不可能研发出来，你看看他们食品饮料里添加了多少化学添加剂。
bobbyeapen6049
@OmegaXYT This logic applies to your own country.
这套说辞放在你们本国身上也一样成立。
OmegaXYT
@bobbyeapen6049 Pretty sure fellow Americans in general agree with that?
绝大多数美国人应该也认同我的观点。
Joe-Skier
@OmegaXYT the USA invented it, but won't share it. Just like zero point energy
这项技术是美国先发明的，只是不肯对外分享，就像零点能源技术一样。
WesTheWizard
@Joe-Skier yeah right lol. You have no evidence of that
可拉倒吧，你一点证据都拿不出来。
earlgrosser646
Have you seen the amount of warnings on Chinese food and beverages?
你见过多少针对中国食品饮料的安全警示公告？
BrightCore777
Clean water innovation could change millions of lives.
这项净水创新技术能改变数百万人的生活。
EasternEngine
Absolutely — water scarcity affects far more people globally than most tech coverage acknowledges. Glad this one resonated.
确实如此，全球受缺水困扰的人口远比大多数科技报道提到的更多，很高兴这项技术受到大家关注。
MichaelReese-c3o
CATL could use the sodium for its batteries
宁德时代可以利用海水淡化分离出的钠来生产电池。
Alan-xr5pj
BRAVO! CHINA! CHINA! CHINA!
Excellent job for improving & upgrading a 30 years obsolete and worn desalination technique!
garycheung6780
Cost wide and scale wide, it is Israel that started over 30 years ago and became a major agricultural produce supplier to EU ! Cost is around USD $0.41 per cubic meter water. Singapore has been desalinating seawater commercially for 21 years!
太棒了！中国万岁！
只是把淘汰三十年的老旧海水淡化技术改良升级而已，谈不上多厉害。
从成本和规模化角度来说，以色列三十多年前就开始海水淡化，如今是欧盟主要农产品供应国，淡化水成本约每立方米0.41美元。新加坡商业化海水淡化也已经运营21年了。
EasternEngine
Great context that deserves more visibility — Israel and Singapore are genuinely the established leaders in large-scale desalination and shouldn't be overshadowed by a new headline. The distinction worth making is this Chinese approach is aimed at small-scale, off-grid, portable use cases (disaster relief, remote areas) rather than competing with those countries' massive centralized plants. Different scale, different use case.
你说的背景很有参考价值，值得更多人了解。以色列、新加坡确实是大型海水淡化项目领域的老牌领头羊，不能因为这条新闻就忽略他们。关键区别在于，中国这套技术主打小型、无外接电网、可便携场景，用于救灾、偏远地区供水，并非和两国大型集中式淡化厂竞争，二者规模、适用场景完全不同。
garycheung6780
and Saudi Arabia are the leaders! China is on the right track.
沙特也是行业领先者！中国的发展方向是正确的。
CowinAlerts
Natural Brine & Seawater: Brine sourced from clean, natural underground aquifers, salt lakes, or concentrated seawater can be successfully processed. Using solar evaporation ponds, the brine is concentrated until it reaches a specific density (around 25 °Bé). At this point, the sodium chloride (NaCl) selectively crystallizes. The crystals are then collected, washed, and refined.
天然卤水与海水处理方法：取自干净地下含水层、盐湖或者浓缩海水的卤水都能加工处理。借助太阳能蒸发池浓缩卤水，达到25波美度特定浓度后，氯化钠会单独结晶析出，之后收集晶体，清洗提纯即可。
Dawar55
Can use mirror solar concentrator
可以加装聚光镜提升太阳能利用率
syedmaricar9946
Water will change peoples every nation needs.
水资源会改变各国民众的生活，每个国家都离不开淡水。
JackoJackson-l1j
The Middle East has been doing that for 30 years
中东国家三十年前就在用太阳能蒸发海水了
Trueye-sl2mr
Brilliant innovation. Thank you China
绝佳创新，感谢中国。
AzizAziz-lc2qk
20l enough for 10 people daily?? Maybe if those people shower once a month
每天20升水够十个人用？除非这群人一个月才洗一次澡。
EasternEngine
Fair catch on the framing — 20 liters per person per day is the WHO minimum for basic drinking, cooking, and hygiene needs, not a full shower-and-laundry lifestyle standard. It's emergency and basic survival level water, not comfortable daily living. Worth being precise about that distinction.
你提出的质疑很合理。世卫组织规定，每人每天20升只是饮水、做饭、简单清洁的最低生存标准，不包含洗澡、洗衣等日常用水需求。这只是应急基础供水，达不到舒适生活用水标准，这点需要区分清楚。
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