Eli5: why we don’t combine compost and regular garbage in landfills

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Where I live we have two separate waste pickups, one for compost, any organic waste from yards like grass clippings, leaves, etc. And one for regular trash. Wouldn’t it make sense to combine them? All that organic waste mixed in with the trash would have to help it decompose, right?

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4 Answers

Anonymous 0 Comments

There’s things that people throw out that will take forever to decompose, such as plastic and metal.

With organic waste, there’s three things:
1. It can be made into compost and used/resold to the market.
2. By putting organic waste to landfills, you’ll fill up the landfill faster; and one of the major cost is land area (which means once it’s full you’ll have to find a new landfill place)
3. Because organic decompose, it can create settlement within the landfill. Just imagine like a sinkhole, because what was once organic solid (like banana peel) will have shrunk and essentially dissipated to gas; so all the layers of landfill (what was formerly a tall hill) will be a not-so tall hill. This shrinkage, if too much, may cause the landfill lining to be ineffective.

Basically. Why throw out organic waste when you can use it as a valuable resource?

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