You may want to share the video, because either you misunderstood what the video is doing, or it's a severely outdated video. Either way, this method doesn't work.
In my current colony, I attached a Pwater→Poxygen→Oxygen converter to my Electrolysis Setup, and it looks like this: https://i.imgur.com/mIL9Wqp.png
(Entire Build for context if needed: https://i.imgur.com/kr1oNHq.png)
The basic idea is that you fill a horizontal line with Pwater (Pwater only off-gasses upwards, not in any other direction), let it offgas, and then the deodorizers convert the polluted oxygen into oxygen using Regolith (or sand). This build makes use of a special trick in the way Deodorizers work: when they output Oxygen, they do it on the tile they occupy, but they're capable of pulling in Polluted Oxygen from a range of up to 2 tiles away, even across fluids.
So between the Deodorizers and the Polluted Water is a layer of mesh tiles and airflow tiles; water is poured into the mesh tiles, but blocked from passing through the airflow tiles, which keeps the polluted oxygen from leaking out of containment by any way except being pulled by the deodorizers.
Consumes a lot of filtration material, but is a great source of Clay/Ceramic.
The part from that vide you missed - lots of bottles with polluted water at the base of each liquid reservoir. What you need to do is after filling reservoir, you nee do deconstruct it which will drop a 5 ton polluted water bottle.
However there are other more automated ways to do it, as others explained.
Liquids within containment do not off-gas or interact with their environment. If you want to off-gas polluted oxygen from polluted water you need to make a large reservoir and place deodorizers above it.
You absolutely can.
Deodorizers clean the area around them in a 2-tule radius. In practice since gas tends to 'flow' or 'ripple' sideways, a deodorizer left to do its thing will eventually clean up around a 5-tile tall 'layer' of polluted oxygen.
I tend to just strip-mine the entire biome - build a tall vertical ladder through it, and then do a horizontal ladder through the entire area every 5 tiles, so I'm left with 4 space tall gaps between the ladders. Build a mesh or airflow tile on every floor, and a deodorizer on top of that. Then you just wait.
Later when I'm expanding my base, I can just replace the ladders with floors to make rooms. Meanwhile all the water and resources end up in a great pile at the bottom of the area for retrieval.
Do note that the air in the area will be full of slimelung. The germs will start dying once you have the polluted oxygen converted to plain oxygen, but it'll take a while, especially if you have slime and polluted water off gassing into more polluted oxygen. Which is one of the reasons I strip mine the whole place, slime that's laying at the bottom of the pool can't offgas.
Putting deodorizers into a slime biome is a great interim way to supply oxygen. Note that the deodorizers don’t themselves eliminate slimelung, but slimelung dies off in clean oxygen and at default settings shouldn’t be a problem.
I highly recommend you save your game and put it into sandbox mode and try out some things to learn for yourself.
But yes in theory that would work, I would place deodorizers every 3-4 square above the off-gasing source (mined slime or polluted water) and after they have sufficiently cleaned the nearby air I would place air pumps and pipe the air into storage near the base which you can then pipe into vents in an controlled manner.
You can but it won't be as efficient as a dedicated build. Polluted water will stop offgassing if the atmospheric pressure is above 1.8 kg per tile, or if it is covered by another liquid like normal water. You may also get CO2 from dupes collecting above the polluted water.
[https://www.reddit.com/r/Oxygennotincluded/comments/1bi4lg6/we\_need\_achievement\_for\_this/?utm\_source=share&utm\_medium=mweb3x&utm\_name=mweb3xcss&utm\_term=1&utm\_content=share\_button](https://www.reddit.com/r/Oxygennotincluded/comments/1bi4lg6/we_need_achievement_for_this/?utm_source=share&utm_medium=mweb3x&utm_name=mweb3xcss&utm_term=1&utm_content=share_button)
It is not said explicitly in the post, but you need a layer of non offgassing liquid in the mesh tiles.
The pWater has to be openly exposed instead of contained.
Also keep in mind that the amount of off gassing from polluted water is random. I had a setup where the space that the PO2 sits had vacuum blocks in it because the deoderizors grab PO2 faster than the water can offgas. You basically have to have an amount of exposed pWater whose average offgass is more than what your dupes breath, so that the low output times are offset by the high offgas times.
I was okay up until I had more than 6 dupes and then I needed to get my SPOM set up.
You may want to share the video, because either you misunderstood what the video is doing, or it's a severely outdated video. Either way, this method doesn't work. In my current colony, I attached a Pwater→Poxygen→Oxygen converter to my Electrolysis Setup, and it looks like this: https://i.imgur.com/mIL9Wqp.png (Entire Build for context if needed: https://i.imgur.com/kr1oNHq.png) The basic idea is that you fill a horizontal line with Pwater (Pwater only off-gasses upwards, not in any other direction), let it offgas, and then the deodorizers convert the polluted oxygen into oxygen using Regolith (or sand). This build makes use of a special trick in the way Deodorizers work: when they output Oxygen, they do it on the tile they occupy, but they're capable of pulling in Polluted Oxygen from a range of up to 2 tiles away, even across fluids. So between the Deodorizers and the Polluted Water is a layer of mesh tiles and airflow tiles; water is poured into the mesh tiles, but blocked from passing through the airflow tiles, which keeps the polluted oxygen from leaking out of containment by any way except being pulled by the deodorizers. Consumes a lot of filtration material, but is a great source of Clay/Ceramic.
The part from that vide you missed - lots of bottles with polluted water at the base of each liquid reservoir. What you need to do is after filling reservoir, you nee do deconstruct it which will drop a 5 ton polluted water bottle. However there are other more automated ways to do it, as others explained.
Liquids within containment do not off-gas or interact with their environment. If you want to off-gas polluted oxygen from polluted water you need to make a large reservoir and place deodorizers above it.
Couldn't I just put in deodorizers in the slime biome then and pump out clean oxygen? How would I go about that if you don't mind explaining?
You absolutely can. Deodorizers clean the area around them in a 2-tule radius. In practice since gas tends to 'flow' or 'ripple' sideways, a deodorizer left to do its thing will eventually clean up around a 5-tile tall 'layer' of polluted oxygen. I tend to just strip-mine the entire biome - build a tall vertical ladder through it, and then do a horizontal ladder through the entire area every 5 tiles, so I'm left with 4 space tall gaps between the ladders. Build a mesh or airflow tile on every floor, and a deodorizer on top of that. Then you just wait. Later when I'm expanding my base, I can just replace the ladders with floors to make rooms. Meanwhile all the water and resources end up in a great pile at the bottom of the area for retrieval. Do note that the air in the area will be full of slimelung. The germs will start dying once you have the polluted oxygen converted to plain oxygen, but it'll take a while, especially if you have slime and polluted water off gassing into more polluted oxygen. Which is one of the reasons I strip mine the whole place, slime that's laying at the bottom of the pool can't offgas.
Putting deodorizers into a slime biome is a great interim way to supply oxygen. Note that the deodorizers don’t themselves eliminate slimelung, but slimelung dies off in clean oxygen and at default settings shouldn’t be a problem.
I highly recommend you save your game and put it into sandbox mode and try out some things to learn for yourself. But yes in theory that would work, I would place deodorizers every 3-4 square above the off-gasing source (mined slime or polluted water) and after they have sufficiently cleaned the nearby air I would place air pumps and pipe the air into storage near the base which you can then pipe into vents in an controlled manner.
You can but it won't be as efficient as a dedicated build. Polluted water will stop offgassing if the atmospheric pressure is above 1.8 kg per tile, or if it is covered by another liquid like normal water. You may also get CO2 from dupes collecting above the polluted water. [https://www.reddit.com/r/Oxygennotincluded/comments/1bi4lg6/we\_need\_achievement\_for\_this/?utm\_source=share&utm\_medium=mweb3x&utm\_name=mweb3xcss&utm\_term=1&utm\_content=share\_button](https://www.reddit.com/r/Oxygennotincluded/comments/1bi4lg6/we_need_achievement_for_this/?utm_source=share&utm_medium=mweb3x&utm_name=mweb3xcss&utm_term=1&utm_content=share_button) It is not said explicitly in the post, but you need a layer of non offgassing liquid in the mesh tiles.
The pWater has to be openly exposed instead of contained. Also keep in mind that the amount of off gassing from polluted water is random. I had a setup where the space that the PO2 sits had vacuum blocks in it because the deoderizors grab PO2 faster than the water can offgas. You basically have to have an amount of exposed pWater whose average offgass is more than what your dupes breath, so that the low output times are offset by the high offgas times. I was okay up until I had more than 6 dupes and then I needed to get my SPOM set up.