
Polluted Dirt is an unprocessed biological waste resource in the space-colony simulation game Oxygen Not Included. If stored at a pressure below 1800g, it emits Polluted Oxygen over time, losing mass in the process. The emission of Polluted Oxygen can be prevented by submerging Polluted Dirt in a liquid or storing it under a gas pressure of at least 1.8kg/tile. Players can also convert Polluted Dirt into Dirt inside a Compost at 100% efficiency, though this can increase the temperature of the Dirt, potentially harming crops. Other methods of dealing with Polluted Dirt include feeding it to Pokeshells for lime and sand or using a Sublimation Station to convert it into Polluted Oxygen.
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What You'll Learn

Use a Sublimation Station to convert it to Polluted Oxygen
Polluted Dirt is an unprocessed biological waste that emits Polluted Oxygen over time. While Polluted Dirt can be stored in a Storage Bin under Water to prevent it from producing Polluted Oxygen, it can also be converted into Polluted Oxygen through the use of a Sublimation Station.
A Sublimation Station is a building that speeds up the conversion of Polluted Dirt into Polluted Oxygen. This process, known as sublimination, involves the conversion of solids into gas. The Sublimation Station converts the solid mass of Polluted Dirt into breathable gas. However, because it creates Polluted Oxygen, it will need to be deodorized to prevent Yucky Lungs, which causes a 30% increase in Oxygen Consumption. Converting the Polluted Oxygen to clean Oxygen requires 6.6 Deodorizers per Sublimation Station, an additional power cost of 33 W, and 880 g/s of Filtration Medium. The deodorized output of one Sublimation Station can support 6 Duplicants.
An alternative to using Deodorizers is to allow 8 Pufts to convert the Polluted Oxygen into Slime. The Slime can then be used in an Algae Distiller to produce Algae and Polluted Water. The Algae can be converted into Oxygen using an Oxygen Diffuser, while the Polluted Water can be processed using a Water Sieve and an Electrolyzer to create additional Oxygen. While this method has a slightly lower Oxygen efficiency and involves more processes, it requires only 10% of the Filtration Medium per cycle.
The Sublimation Station has good synergy with Ethanol Power generation, as the process of converting Arbor Trees into Ethanol produces a large amount of Polluted Dirt. Burning Ethanol in a Petroleum Generator also produces the Polluted Water needed for irrigating new Arbor Trees, making the process water-negative. Utilizing a Sublimation Station instead of an Electrolyzer can save the colony hundreds of kilos of water per cycle. The Sublimation Station also has good synergy with Puft Ranching, as Pufts consume large quantities of Polluted Oxygen and produce Slime, which can be useful for various purposes, including farming, ranching, and generating Oxygen or Water.
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Feed it to Pokeshells to get lime and sand
Polluted Dirt is an organic resource and unprocessed biological waste in the space-colony simulation game Oxygen Not Included. If stored at a pressure below 1800g, it emits Polluted Oxygen over time, even while inside storage bins. This emission of Polluted Oxygen can be prevented by submerging Polluted Dirt in a liquid or storing it under a Gas pressure of at least 1.8 kg/tile. A good way to store Polluted Dirt is in a storage bin under water, which will prevent it from producing Polluted Oxygen.
Pokeshells are a great way to manage Polluted Dirt and produce lime and sand. Pokeshells consume Polluted Dirt or Rot Pile and excrete Sand, and shed shells that can be processed into Lime. They have three variants, determined by the liquid they live in, and each has a different drop upon growth and death. The default Pokeshell will produce Lime and Sand, while the Oakshell variant will produce shells that can be processed into Lumber instead of Lime. The chance of an Oakshell variant increases when they dwell in Ethanol of substantial mass.
To feed Polluted Dirt to Pokeshells, it can be emptied from outhouses to supply sand for deodorizers. For each cycle, outhouses in a room need to be visited by Duplicants at least eight times and emptied timely to satiate a Pokeshell. Pokeshells can also be fed unedible, but abundant food items, such as Algae, by throwing them into their pool to rot. This method requires a lot of space for farms and can be problematic to retrieve the molts from the water.
Overall, using Pokeshells to manage Polluted Dirt is an effective strategy in Oxygen Not Included. By consuming the Polluted Dirt, Pokeshells produce valuable resources like Lime and Sand, which can be used for various purposes in the game.
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Feed it to Sage Hatches for coal
Polluted Dirt is an organic resource and a form of unprocessed biological waste in Oxygen Not Included. It emits polluted oxygen over time when stored at a pressure below 1800g. This emission can be prevented by submerging the dirt in a liquid or storing it under a gas pressure of at least 1.8 kg/tile.
One way to deal with polluted dirt is to feed it to Sage Hatches, which will then produce coal. Sage Hatches are a type of creature in the game that specialises in consuming organic materials, making them useful for disposing of excess polluted dirt. They can also eat spoiled, over-abundant, or bacteria-laced food, as well as other materials such as slime, algae, and fertiliser.
While Sage Hatches can be useful for dealing with polluted dirt, they may not be the most efficient method for coal production. This is because they have a high conversion rate of consumed mass to coal (100%), but the things they eat are often more valuable than the coal produced. Additionally, the coal conversion depends on the mass consumed, and the mass of organic materials is typically low. As a result, most guides recommend producing Stone Hatches for coal production, as they eat infinite minerals like igneous rock and have a lower conversion rate (50%).
To sustain Sage Hatches and use them for coal production, players can set up a Morb-Puft-Sage Hatch feeding chain, which will provide eggs, meat, and coal. However, this method may not be sustainable in the long run, as the resources fed to the Sage Hatches may be more valuable than the coal produced. Additionally, using food as a feed for Sage Hatches is not recommended, as food is expensive to make and has less mass per calorie, making it inefficient for coal production.
In conclusion, while feeding polluted dirt to Sage Hatches is a viable option for dealing with excess dirt and producing coal, it may not be the most efficient method. Players should consider the value of the resources they are feeding to the Hatches and compare it to the output of coal to determine if this method is suitable for their needs.
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Store it in a Storage Bin under water to prevent Polluted Oxygen emission
Polluted Dirt is an organic resource in the game Oxygen Not Included. It is unprocessed biological waste that emits Polluted Oxygen over time, even while inside Storage Bins, if stored at a pressure below 1800g. This emission of Polluted Oxygen can be prevented by submerging Polluted Dirt in a liquid or storing it under a gas pressure of at least 1.8kg/tile.
One effective method to manage Polluted Dirt is to store it in a Storage Bin submerged under water. By doing so, the Polluted Dirt becomes incapable of producing any Polluted Oxygen. This technique is particularly useful for preventing the unwanted spread of Polluted Oxygen within your colony.
To implement this strategy, designate a suitable body of water, such as a pool or reservoir, where the Storage Bin will be submerged. Ensure that the water depth is sufficient to completely cover the Storage Bin, allowing for potential fluctuations in water levels. It is crucial to use Storage Bins specifically designed for submersion and watertight integrity. Regularly monitor the setup to ensure the Storage Bin remains fully submerged and that there are no leaks or structural issues.
Additionally, consider implementing a system for replenishing the water level, as evaporation or minor leaks may occur over time. This can be achieved through various means, such as manual refilling or an automated water supply system. By maintaining the water level, you ensure the continued prevention of Polluted Oxygen emission from the Polluted Dirt.
Furthermore, it is important to note that the Storage Bin should be easily accessible for future use or relocation. Clearly mark the location of the submerged Storage Bin to prevent any accidental collisions or disturbances. This precautionary measure ensures the uninterrupted containment of Polluted Dirt and maintains the integrity of your colony's environment.
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Use a Compost to convert it to Dirt
Polluted Dirt is an organic resource and unprocessed biological waste in the game Oxygen Not Included. If stored at a pressure below 1800g, it emits Polluted Oxygen over time, losing mass in the process, even while inside storage bins. The emission of Polluted Oxygen can be prevented by submerging polluted dirt in a liquid or storing it under a gas pressure of at least 1.8kg/tile.
A good way to store polluted dirt is in a storage bin under water. This will prevent it from producing polluted oxygen. Polluted Dirt can also be converted into Dirt inside a Compost. The compost breaks down polluted dirt and other compostable items into Dirt. It can be used to dispose of surplus food or seeds, provided that these resources have been marked for composting. The pile needs to be flipped by a Duplicant once every 50 kg of Dirt produced.
With Dirt, players can make everything else they need for their colonists. Oxygen can be made with deodorizers and sand, and food can be produced from critters.
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Frequently asked questions
Polluted Dirt is unprocessed biological waste and an organic resource. It emits polluted oxygen over time, losing mass in the process.
The emission of polluted oxygen can be prevented by submerging polluted dirt in a liquid or storing it under a gas pressure of at least 1.8 kg/tile. Another way is to store it in a storage bin under water.
Polluted Dirt can be converted into Dirt inside a Compost at 100% efficiency. It can also be used in a Sublimation Station to create polluted oxygen.
Polluted Dirt can be fed to Pokeshells to produce lime and sand, or to Sage Hatches for coal.
Some players have mentioned that compost heat production is low and trivial to deal with. However, others have noted that using hot dirt for planting food can cause the plants to wither.









































