Tips on poluted water management?

[Ventus976]

The major roadblock I hit in each of my games in my water supply being contaminated with food poisoning. As water starts to run low, I naturally start sieving polluted water in order to keep my colony alive. The problem is if I try to purifying the polluted water that has already been used in the base, it's always filled with food poisoning. Even after it's been sieved the fresh water is still full of them and even though it says in the description that it dies off in pure water, it never seems to go away. Eventually this just leads to my dupes all getting food poisoning (or slimelung due to low immunity).

Am I missing some important step for killing off germs or is there no real option for fixing this? Thanks for your replies.

[Stoof]

You can sieve the water from the surrounding biomes to produce non contaminated water. Your germy polluted water can be sent to fertilizer makers or saved until you're ready to boil it into clean water as this will kill the germs.

[malloc]

Heating the water will kill off the food poisoning but if you segregate your water systems it is not necessary.

Process the diseased water through a sieve and then send it to your electrolyzers.  Food poisoning will go into the air but the dupes will not have any ill effects by breathing it.  They have to eat it so never put the sieved water in a pool that the chef can use to make mush bars or lice loaf and don't use it to irrigate any plants.

 

[Kabrute]

if you go the sieve route be careful of heat death.

Germs are only dangerous in very specific and narrow ranges, scroll to the bottom and check out the base, poke around, might give you some ideas.

[Mach26]

food poisoning in the polluted water disappears if you do not send more polluted water. If you want to make it with zero energy, you need to build 2 or 3 separate pools. When the first one full, send the water from the dupes to the second pool. After a few cycles water in the first pool becomes poison free. If you won't use the water in the short time of period, you need the third pool.

This is how I manage with polluted water: When the first one full, hydro sensor redirect the water from the toilets to the second one. I wait a few cycles, and when it is germ free, I just open the gates to the bigger pool. It is rather big one, but in the early game all you need is 2 polluted water pools.

Spoiler

 

[PhailRaptor]

@Mach26 There must be an additional force at work (probably heat) that is killing your germs in Polluted Water.  Germs will multiply in Polluted Water, not die in it.  You must clean the water if you want to make germs die.

[Gurgel]

There are different approaches to this issue. My way is to keep water consumption low until I have the means to cool geyser-water. The polluted water I treat as something to be disposed off, current plans are

       Polluted Water -> Fertilizer -> Sage Hatch -> Coal -> Electricity (with more electricity from the natural gas and CO2 in the process)

Some of the fertilizer will also go into a farm-station to reduce water usage by plants. At the moment I am still on mushrooms, but I plan to move to Berry Sludge, I tried cleaning polluted water via distiller, but that did not go so well. Basically you need to experiment a lot or copy an existing design, both things that defeat the purpose of playing for me. One thing you can do is add water with slimelung into the polluted water with food poisoning,  That seems to replace the food poisoning if done enough, The slimelung then slowly vanishes by itself

 

 

[Kroning]

Nowdays there are nothing bad about germy water. I do nothing personally.

Eelectrolyzed germy water will turn in germy air. Germy air replaces slimelung, so it's good.

Food loosing germ when you cook it, so no downsides too.

[CDoroFF]

First of all, you have to read about diseases in ONI. Most significant facts are:

Food Poisoning (FP) dies in clear water and in any hot water. Slimelung (Sl) dies everythere excep slime and polluted oxygen.
Trouble is not instant depoisoning of clear water. You need decent amout of time after "sieving" polluted and poisoned water to kill all the germs.
The easiest way just avoid mixing poisoned and germs-free water at all. I usually make separated lanes of water suppliement for toilets\showers\sinks and other purposes. Also it is impossible for my dupes to visit toilet and not wash their hands after it. Important fact that you have to make (idk correct termin in english) tap to let additional water from lavatories to leave the system after water sieve. So collected clean water with FP could be used as cooler for something else. On temperature about 75° it takes 1 cycle to kill germs totally. Less temperature - more time required. Finally you can use it in elecrolizer. 

found theme with sustainable toilets 

 

[Soulwind]

 once you stop using mushbars and liceloaf, and start cooking all of your food,  fp germs don't matter anymore.   I just ignore them. 

[Mach26]

7 hours ago, PhailRaptor said:

@Mach26 There must be an additional force at work (probably heat) that is killing your germs in Polluted Water.  Germs will multiply in Polluted Water, not die in it.  You must clean the water if you want to make germs die.

It should multiply. but it is not happening. Here you can check the temperature: 

Spoiler

 

Here I found the same tile in the first picture after 10 cycle

Spoiler

 

[Neotuck]

Here's a simple setup for pre killing germs in PW before dumping it into the rest of the PW tank

The tepidizer keeps the PW at 90C to kill germs, the valve stops the intake pipe when the hydro sensor detects it's full, when the germ sensor detects no germs after about 10 seconds the doors open dropping the germ free hot PW into a tank below to be pumped to a sieve later 

[0xFADE]

I thought my dupes recent food poisoning was caused by the food getting dropped in some nasty water before eventually being eaten. Sounds like the real cause is exactly the recent source of water.  I guess my polluted reservoir got up to some critical amount of food poisoning.

Thanks

[Enginator]

One of the main issue with FP processing is not only heating the, but also bringing it back to a useful temp (25 ish degrees). I experimented with extracting heat from a buffer tank while the germs died and then transferring the heat back into the buffer to cool the water down as an energy efficient method. While this worked, the throughput and efficiency wasn't great.

The current solution I have is to incorporate water treatment into my base cooling system. The sewer tank pumps into a coolant tank in a cold biome that keeps the aquatuner below overheat temp. This water maintains equilibrium in the cold environment at approx 100 deg so is ideal for killing FP. I have a germ switch which pumps out the germ free polluted water to a seive. The seive pumps the hot water straight into my hydrolizers for an effective heat deletion to avoid a lot of the work to cool the water back down again.

See the images below:

Sewer tank (raw sewage)

Sewage tank feeds radiator pipes that run around the entire base. A liquid outlet keeps the aquatuner coolant sump filled using the germy water in the pipes.

The aquatuner operates in the cold biome so the water it is immersed in gets hot but is kept at an acceptable temperature by the cold environment (this solution is not infinite but has been running for 150 turns and has only consumed 20% of the cold biome.

 

The clean, hot water is then filtered and pumped into hydrolysers.

 

[Greep]

It's useful to treat your food poisoned waste water if you like, but keep in mind this constitutes a small fraction of your overall water usage:  Only the lavatory and bottles of polluted water will have food poisoning, and much of your water is just vaporized for oxygen.

However, if you don't have separate outputs, this infected water will spread to your other polluted water that is in much greater volume: stuff like slime biome polluted water, carbon skimmer polluted water

Usually if you correctly separate it out, its easier to simply dunp and forget the water and just go dig out some polluted water in the slime biome.

[Oozinator]

23 minutes ago, Enginator said:

One of the main issue with FP processing is not only heating the, but also bringing it back to a useful temp

 

No, it's not. (nice build)
When you use heat producers like thermocooler/aquatuner to preheat PW you get rid of germs easy.
Like a loop. Cooling is another thing and there are minimum two temperature zones in the game, one for dupes and one for machines.
When you keep in mind that machines could not overheat(gold), when they are in a thin layer of PW, then whole heat complex could be isolated and needs no care.
Ok now you get hot water (some, depending of size/machineroom) and need it to cool down.
With average temp calculation you have to spill small mass of water on big cold mass, to get it done quick.
Long corridor with metal tiles cooled by radiant pipes, cooled by aquatuner (which preheats pw), or by wheezies from below are enough.
Cooling got very easy, since drip cooling was removed.
I used Borg Cube often in the past, perhaps cooling was always that easy and i wasn't aware of it.
Split your heatproducers from the rest and isolate it well.
When you need plastic for exos, flood a small oilpocket with polluted water install a pump - done.
Before tempchange was added heat "spreads" out much faster and could cause havok.
Everything easy now.

@Ventus976 You could feed very hot liqid into water sieve, to reduce temperature to 40° on the fly.
I use big masses of water since new update to "smooth" out temperature changes. "Balancing out" over dazillions of cycles.
Only my bristles need cool water, but i use unisolated pipes to cool areas, before i use it.

[TheExceed]

What I found to work extremely well, was tank of a large amount of sieved water in abyss with a tepidizer. Have a temp sensor and/or germ (if both, used an AND Gate) at the top connected to the tepidizer. Then pump this into another room and have either next to your PW vent and have the them touch with tungsten metal tiles (not super efficient like I had hoped) or pump the PW through the new pipes and cool it off. This would be mainly with a slush geyser, but you could use 1 aquatuner with a warm PW vent to get it cool enough to cool that tank off.

Since my slush was close to base, I put my clean water next to it with metal tiles and the piping.
Have a temp sensor next to your vent from the heated clean water tank and connect the sensor to a shut off going into the tank and a not gate going to another shut off for if you want to always allow the water to be sieved. If not, just the one shut off works. But I also use it for fert synth so I can't have it constantly cooling the water or it'll drop it to low for berries. 

This does cost a bit of power and time to set up but so far it has worked extremely well for me. I love it.

[PhailRaptor]

On 5/14/2018 at 9:35 AM, Neotuck said:

Here's a simple setup for pre killing germs in PW before dumping it into the rest of the PW tank

The tepidizer keeps the PW at 90C to kill germs, the valve stops the intake pipe when the hydro sensor detects it's full, when the germ sensor detects no germs after about 10 seconds the doors open dropping the germ free hot PW into a tank below to be pumped to a sieve later 

I managed to condense the Automation grid and the Shutoff for this to fit inside the 2x6 space of the heat pool.  The increased mass within the space should preserve temperature better, allowing better throughput should it be necessary.  And less space is always beneficial.

[Oozinator]

3 minutes ago, PhailRaptor said:

 And less space is always beneficial.

 

Why? There is enough free space on a map.

[Denisetwin]

On 5/14/2018 at 7:41 AM, Soulwind said:

 once you stop using mushbars and liceloaf, and start cooking all of your food,  fp germs don't matter anymore.   I just ignore them. 

This.  I never pay attention to germs in water, I move as quick as I can to mushrooms and bristle blossoms in my base, most of the time if you only stay with five to six dupes until the farms are up and running, you don't even have to build a mush machine, just let them eat straight meal lice and quickly get those mushrooms and bristles up and going.

[thewreckedangle]

if you send your clean (but germy) water to a tank somewhere and leave it about 20~ cycles (once you stop adding to it) it will be germ free. (they die) i usually end up with about 5 of these tanks. if you do it in an ice biome i think it works faster (but your water may freeze d: )