Interesting, but sad and wasteful. All that water! I take it that it is some kind of corn processing plant? They need to be finding a use for those corn cobs instead of leaving thousands of tons of them sitting around to catch fire and cause air pollution and hazard.
Ground corn cobs make good mulch ... I have done it when we were feeding corn to squirrels more regularly. Can also be used as kitty litter, polishing media for precision instruments (https://www.dillonprecision.com/content/p/9/pid/25218/catid/8/Ground_Corn_Cob_Polishing_Media), bedding for birds and small animals,
ALC Ground Corncob blasting media is used for cleaning delicate surfaces such as wood, stone, block and glass. Will not scratch glass surface.
Absorb Dirt, Oil
They could be be grinding those up, bagging them, and selling them for profit, instead of costing their community millions of dollars.