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Comment by sly010 | Hacker News Reader

My main problem with recycling as done today in most cities I just don't know what do they expect from me. In London my district had different bins for different colors of glass. I live in NYC now, where I hear they have a 2 stream system, one for metal and glass, one for paper and plastic but most public buildings just have "recycle" and "trash". Should I throw a plastic bottle in there? I know you can recycle some plastics but not all. Cardboard is obviously recycled, but can I put in other paper boxes (not necessarily corrugated) between the cardboard? What about my paper coffee cup? Is that compostable or recyclable paper or trash?

In a weird way a machine like this would solve my issue if it were programmed by the building or city to do the right thing...

Edit: typos

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I have friends in Europe, and last time I stayed with them they tried to explain, as best they understood it, the local recycling scheme. It was so complex that packaging has something like 5 different recycle logos, and their municipality only accepts 3 of them, but they're all just a circle of arrows pointing at each other with a number in the middle.

So can you recycle the brown bottle with the more square shaped arrows and the "3" in the middle? How about the next bottle exactly the same with the "3" in the middle but slightly more swirly arrows? Or the same square arrows and a "4"? They didn't even know, so they presort, show up at the recycle center with everything and get rid of what the employees there will accept and take home the rest for regular trash.

It's a huge waste of everybody's time. And the 20 minute drive to the local recycle center can't be helpful.

Most places in Europe I have lived will pick up everything from public containers not further than a few tens of meters from your house.

You only need to drive to recycle very-specific trash like baby diapers, dangerous substances, furniture and big appliances.

Common division is as follows:

- Blue for paper and carton - Green for glass (some places classify glass in three colors: green, brown and white) - Brown for compost - Yellow for Metal and Plastics - Other: Anything that does not fall on the previous containers.

Exceptions: batteries, electronics and dangerous substances, which, as I explained before, need to be picked or brought to a special recycle center.

Are you talking about plastic and their resin codes? Only the number there matters (it identifies the type of plastic), the arrows not. https://en.wikipedia.org/wiki/Resin_identification_code

Here the rule for paper is clean paper (no wax, no food residue, etc) and only corrugated cardboard (no boxboard). That's based on how useful the materials are so I guess is a pretty common standard.

I think that an expectation of global standards is unrealistic. When you arrive in a new city, you have to learn plenty of things like where things are, how to get around, and what laws differ. I don't think that asking people to figure out what should go in which bin in the city you just moved to (an event that typically occurs annually at most and a question that takes a few minutes of Googling to answer) is excessive; it's just part of the new city learning curve.

I am yet to be convinced that domestic recycling is the way to go, as opposed to putting all the trash to one huge landfill and subsequently unleashing mining robots on it.

It seems to me that sorting stuff (recycling) at home is prone to errors to such a high degree that it is just a feel-good thing, as opposed to something useful for the environment.

In Cambridge, UK, we get somewhere close to that with 3 bins:

- Green, for compostable waste (food, leaves, shredded paper, etc.)

- Blue, for recyclable waste (pretty much anything made of plastic, foil, paper/cardboard or glass)

- Black, for everything else

The only things you really have to watch out for are things like plasticised foil and styrofoam. Batteries can be tied to the top of the blue bin in a plastic bag.

It works really well, and you basically just have to know what's recyclable and what isn't (which is usually written on the packaging anyway).

I think our local authority is a bit ahead of the rest of the country on this, though. Most places in the UK still make you sort glass from paper, etc.

This is my local system too, and it seems eminently sensible. Worth noting that the blue stuff will go through a process similar to the Raspberry Pi sorter, but on an industrial scale, so it's somewhat similar to the idea of sending mining robots into separate things out after the fact, but made much easier by not having food and babies nappies smeared all over the cardboard boxes.

In Vienna, Austria there is an incineration plant (https://en.wikipedia.org/wiki/Incineration) which burns trash to produce energy. As I understand it, they can't just burn everything at once otherwise they can't control the combustion temperature, which then produces harmful byproducts which must be cleaned out between burns, thus reducing the effectiveness. Perhaps a few plastic bottles here and there mixed inside isn't so bad, but if everyone were to do it, it would cause issues? I do know there are "trash-checkers" who dig through trash cans to find, document and fine offenders (it's apparently a fairly well-paid job too).

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