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Metal finishing shop moves into new facility, adds new equipment to operation.

Due to their desire to reduce chromium content of their parts, a number of our customers are asking us to investigate zinc alloy plating of their parts.

The change to technologically advanced, environmentally friendly cleaning solutions can support a safer, more sustainable and more profitable workplace.

In your reply to DW in the January issues (“Spent Bulbs as Hazwaste”), you stated that New York and California mandates that all spent fluorescent bulbs are to be recycled no matter their mercury content. That statement is partially true. In New York there is an exemption for small businesses.

Large stamping house reduces its environmental and worker risks.

Is it something you should consider?

I wish to emphasize the significance of one critical word in your response “...usually fitted with green end caps and certified to pass TCLP”. Unless you have that certification on hand for your lamps, or TCLP results from a certified laboratory, you may find during your next inspection that the cost of (mis)managing your lamps has more than erased all the savings you made.

Now our wastewater treatment operator pays much more attention to the firmness quality of the sludge, and we send out a sludge sample for total solids analysis on a monthly basis. Over the last several years, our annual sludge analysis for TCLP chromium has given results within historical norms.

We are considering switching to magnesium hydroxide since jar tests indicate a 30% reduction in treatment residue at a pH of 8.5 and still meet our metal finishing pretreatment limits.

Those in the plating industry are continually working on the development of a process to recover valuable nickel from spent electroless nickel solutions. Now there is a two-stage method to do just that.