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[–] 1 point 5 months ago (2 children)

That's called a sewage treatment plant, and it's usually done at a large scale because it's way more efficient that way. Would you want to install a grain mill in every house so people can grind their own flour? Would make a lot more sense to share one communally, no?

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  • [–] 1 point 5 months ago (1 child)

    I don't know about you but growing up we had our own grain grinder. I vividly recollect going to the market to find replacement stone wheels for it. Much has changed and the world is worse off now.

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