Stephen R. Schulte P.E. REM

Electroplating

More Floc

Question: Steve, in your March 2003 “Increased Floc” article, you responded to a reader’s question regarding increasing amount of floc in the wastewater pretreatment clarifier even though “nothing in our operations or chemistries has changed...” Chances are that something did indeed change, and detective work is needed to find the culprit.

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electronics

Fluoride Removal

Question For our printed circuit board plating plants, please let us know how to treat/recover fluoride-bearing effluents.

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regulation

Oil Regulation

Question Recently, I read an article that stated EPA has some new oil pollution prevention regulations.

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Plating Tank Exhaust Systems

  Question: This is in followup to your response "Plating Tank Exhaust Systems" in the March 2001 issue.

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Floor Scrubber Water Regulated?

Question: Several months ago I became the plant manager of a production facility that takes rolled steel and performs stamping, welding, drilling, vibratory finishing, zinc phosphating, and electrocoating in order to produce our customers' products.

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Treatment for Free Bromine/Bromate

Question: I am the environmental manager for an anodizing/plating job shop.

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Electroplating

Zinc-Cobalt Wastewater?

Question: One of our best customers has approached us to convert one of our acid zinc lines to zinc-cobalt.

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Understanding VOC Contents in Coatings

Question: I enjoy your specific, accurate responses to questions, even when the subject is out of our “field of view.” I’m the part-time environmental/safety manager for a small custom coater.

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sustainability

Is Recycling Hazardous?

Question: Due to the buildup of contaminants, we are looking at removing about one-half of our chrome plating bath and reconstitute it back to normal operating volume and strength.

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What’s up with Cyanide?

Question: We are having an ongoing “battle” with our local sewer district over wastewater monitoring cyanide results.

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Hazardous Waste Storage Tank

Question: I am the manager of a job shop.

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Cleaning Solvent-Laden Towels

Question: We generate a large quantity of solvent-laden towels in our solvent cleaning and maintenance activities.

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