Changelog

Version: 0.2.0
Date: 2026.09.19
  Features:
    - Added the pollution condenser, which scrubs pollution out of the air around it into polluted water. It only runs where the air is actually polluted.
    - Added the pollution vaporizer, which evaporates polluted water back into the air wherever it is placed, moving the biter attacks that pollution draws.
    - Added the pollution sensor, which reads how much pollution sits in the chunk it stands in, shows it as a status line, and puts it on the circuit network on a signal of your choice.
    - Added solvent, made from sulfuric acid and light oil, and pollution filter restoration, which restores used filters with it in a chemical plant.
    - Added the Pollution sensing, Pollution control, Pollution filtering and Pollution filter restoration technologies, running from radar through to advanced oil processing.
  Graphics:
    - New placeholder icons for the filters, filtering, restoration, solvent and every technology, replacing the inherited Krastorio 2 art. The pollution sensor has placeholder art of its own. All of it is provisional and may be replaced.
  Optimizations:
    - Pollution is now checked once per chunk rather than once per building, so large numbers of condensers are re-checked far more promptly.
  Changes:
    - The air purifier building is removed. Pollution filtering now runs in Assembler 2 and 3 on polluted water from pollution condensers, and returns the water.
    - Pollution filters cost 2 coal, 2 iron, 1 steel and 2 plastic in all games, and are named "Pollution filter".
    - Pollution condensers sharing a chunk now need that chunk's pollution to cover all of them, so a crowded chunk stops together instead of producing polluted water it cannot back.
    - Pollution control now requires Pollution sensing as well as Fluid handling, so a chunk can always be read before anything is built to act on one.
    - The improved filter tier and the two efficiency startup settings are removed, to be redesigned later.
  Locale:
    - Removed the French translation for now. The mod is English only until translations from fluent speakers return; see CONTRIBUTING.md.

Version: 0.1.1
Date: 2026.08.25
  Bugfixes:
    - Stopped registering the Gleba spore efficiency startup setting when Space Age is absent. Its only consumer was already gated on Space Age, so a base-game player was shown a setting naming a planet they do not have, wired to nothing.

Version: 0.1.0
Date: 2026.08.13
  Changes:
    - Continued as an independent mod, renamed to Pollution Reclamation, after KrastorioAirPurifier had no public source repository to contribute a Factorio 2.1 update to.
    - Updated factorio_version to 2.1.
    - Renamed internal prototypes, items, recipes, technologies, and settings under a pr_ namespace prefix.
    - No gameplay changes from KrastorioAirPurifier 1.2.2. Full prior history is preserved at https://mods.factorio.com/mod/KrastorioAirPurifier.