4 ms·
It’s a great application, but electrodialysis on seawater takes more power—-so much that distillation is competitive. The use-case chosen is remote freshwater w
by ttyprintk 2y ago
It’s a great application, but electrodialysis on seawater takes more power—-so much that distillation is competitive. The use-case chosen is remote freshwater wells which suffer from naturally-occurring arsenic. I can only think of a few others which can’t have heavy batteries.
- ttyprintk 2y agoHere’s a state-of-the-art portable prototype with pretreatment: 0.3 l/h at 20W: https://news.ycombinator.com/item?id=31243621 https://news.ycombinator.com/item?id=31243621
- terramars 2y agoThis isn't really accurate, they're targeting industrial wastewater yes but they are working with and have tested brackish water up to several thousand TDS. They had a working EDR system for drinking water installed in Gaza until relatively recently and several in India as well. I'm also skeptical they can make it work with seawater, but it absolutely works with undrinkable brackish water in many other cases too.
- deleted 2y ago[deleted]