A midnight dumper discharged a tank truck full of industrial waste in a gravel p

Question

A midnight dumper discharged a tank truck full of industrial waste in a gravel pit. The truck was spotted there 3 days ago, and a pool of pure waste remains. A laboratory technician determined that the waste has a 5 day BOD of 80 mg/L with a rate constant of 0.1/day. Three factories in the vicinity generate organic wastes: a winery (ultimate BOD=275 mg/L) a vinegar manufacturer (ultimate BOD=80 mg/L) and a pharmaceutical company (ultimate BOD=200 mg/L). Using this information determine the source of the waste.

Explanation / Answer

step 1) find the ultimate BOD of the sample collected after 3 days

    BODt = Lo(1

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