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Re: Molybdenum in Wastewater
Check to see if they are discharging the blowdown from a cooling tower to the
sewer. It is interesting that in the quest to find "safe substitutes" that most
firms switched corrosion inhibitors from one containing hexavalent chromium to
one containing molybdates. The latter is a real big problem for municipal WWTP
who seek to compost their sludge for land application since Moly is a real big
problem for livestock when injested in the grass. There are ways to redesign
cooling towers and operate them differently that reduces the need for corrosion
inhibition. However we just seem to be enamoured with finding substitutes
instead. We really do need to use those cause and effect diagrams. Happy
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