[iamgopal]

That is just 2B. A simple STP plant can handle this. Not every billion is a big number.

Edit : Writer of the article also thinks that.

[toss1]

Yup. liters makes it sound like a big number, but using the author's example:

>> The world’s busiest airport by passenger volume, Guangzhou, could have handled 5.14 million litres of pee in April 2021.

That converts to about 43k 55-gallon barrels per year, or about 118 barrels per day. An insustry standard oil tanker truck is about 210 barrels, range 50-300 [0]. So, all in all, pretty manageable.

[0] https://www.reference.com/business-finance/capacity-tanker-t...

[mattmaroon]

That’s true, my small city processes the waste from over a million people (they provide sewer to the suburbs) every day which is about the same as the number of Americans who fly. Plus they process all the other water that goes down the sewer from showering, laundry, etc. So just one small city is probably processing much more than all the planes in the country combined.

[bcrosby95]

And people actively avoid using airplane toilets, so airplane usage would be even lower.