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

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-truck-e378ab43259d6ab https://www.reference.com/business-finance/capacity-tanker-t...