Single chunk, and depending on the type of filtration, either 45 per second for water based, or 135 per second for charcoal based. Charcoal is made from wood. Normal diffusion ration of 2% from the vanilla game set up on the base game, is sufficient to neighboring pollution into the recently cleared chunk.
There are also 3 new modules which can reduce pollution generation up to 96% in conjunction with efficiency modules.
Finally each of the zip distributable includes a file called readme.txt, with additional technical and design information.
The following blueprint is for the water based air scrubber
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