Course link

https://preview.redd.it/8visxe8yhn0e1.png?width=750&format=png&auto=webp&s=37e717cab30a33be8e330a48f8f48ad27eb9260e

My understanding is that reverse osmosis has several expensive components, but I want to focus on the power requirements for pushing the salty water through the membrane.

If we set up a membrane at about 1,000m below sea level, perpendicular to gravity, the pressure would be approximately the upper bound required to push salty water through it. Assuming all the technical issues of protecting the membrane, having a fresh water gathering space below, and a pipe to the surface, why wouldn’t this work?

I’m really just interested in the theory, so disregard the engineering and environmental challenges here, as I know they are many. (Unless you’re just feeling the need to think it through.)

Thanks!

https://www.anu.edu.au/news/all-news/anu-desalination-breakthrough-to-bolster-global-water-security-as-planet-warms

I saw this tech and it seems awesome. It's been a while since I read it but I'm just wondering why a bigger deal isn't being made about it?

And one of the solutions for the brine issue could just be mining the brine. Sodium batteries, lithium...

Tbh I just want to terraform earth for my own enjoyment lol, and that needs water.

Maybe it's not really that legit? Idk.

Let's say around 10L a day of sea water to turn them into however many liters of drinkable water. What would it take in terms of energy, equipment, space,...

I'm on the cusp of starting a company in this space and seeing a myriad of different companies offering this solutions.

Too name a few:

https://www.newterra.com/applications/desalination/

https://www.watertechnologies.com/products/reverse-osmosis/seawater-packaged-desalination

http://www.nxtlvlwater.xyz/projects/

https://www.osmosun.com/en/

https://ide-tech.com/en/water-solutions/sea-water-desalination/pre-fabricated-design/

https://www.fluencecorp.com/desalination/

Hi, can you tell if your steam vacuum ejector is operating well by touching the shell side if it is hot or cold?

Desalination using reverse osmosis is a method of purifying salt through a filter. Usually, the tank is horizontal and is pushed out by water pressure through a high-pressure pump. I think it is possible to use gravity using a vertical method rather than using the tank horizontally. If this method exists, how about a reverse osmosis method using gravity?

If humanity was willing to do so, and could afford to do it, could we combat rising sea levels by building enough desalination plants on coastlines? Could we make a net zero sea level change this way?

I grew up watching the Voyage of the Mimi when I was a kid. I was thinking of putting together a seawater still of some sort on the beach at my grandparents camp. I thought it might be cool to get the nibblings involved in a project or two this summer ... make some drinking water for the dogs from seawater.

Anyone have any ideas? Are there existing plans for things like this. Planning on macgyvering as much as possible from found items on the beach and around the toolshed...

Hi all, total newbie to desalination and associated electrolysis processes. How many PEM membranes are typically used in 1 electrolysis plant that is processing 500 m3 of water per day? Where can I find this type of information?

Hi, I'm using Reverse Osmosis system to filter water from a salt water tidal river. The water is sometimes very turbid blocking the 20 micron and 5 micron pre filters quickly. What can I do to improve my system? Maybe a Spin down filter? Or sand filter? Thanks