Legend has it that many years ago, somewhere outside Chicago, a memorable oil spill occurred. This wasn't your average burst petroleum pipeline or wrecked tanker ship. No, by this account, a chemical plant leaked a load of palm oil - the stuff used for deep-frying - into the local sewer system. This leak made it all the way down to the wastewater treatment plant (WWTP), and in some quantity, too. As winters go in the Midwest, it was a cold one, and all the palm oil froze.rnThe plant had no choice but to shut down, bypassing treatment while workers went in and cut out the solid oil, chunk by greasy chunk.
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