Exploring the: Pollution Control Zone
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Guarding Against Counterfeit Parts
We have been doing a lot of defense work lately and are concerned about counterfeit parts. How can we protect ourselves?
Paint Stripping Waste Disposal
In response to a question in the September 2012 column regarding the disposal of waste from paint stripping, one reader recommends purchase of a stripping oven, used to strip products and paint racks.
On-Site Treatment or Off-Site Disposal
Can you provide information on a pH/precipitation system that will speed up the process of removing metals and patina chemicals from wastewater?
Clean Wastewater Attacking Zinc Plate
We use ion exchange treatment for wastewater from our nickel, hexavalent chrome and zinc plating rinses. What kind of characterization should we do to identify the pollutants that are affecting our products, and what steps are needed to reuse this w...
What is the best way to reduce hexavalent chrome to trivalent chrome from an aluminum conversion coating rinse water?
Nickel Recovery from Filter Press Cake
Is the recovery of nickel metal from waste sludge considered recycling, reusing or reclaiming?
Floating Floc Causing Issues
We are a contract finisher with anodizing, alkaline zinc plating, electrocoat and powder coat capabilities. Our processes are well-established, but a few days ago we suddenly experienced floc rising, rather than settling, in our waste treatment. Wha...
Waste Treatment for Paint Stripping
How can we remove paint sludge and color and neutralize the pH from paint stripping acid before discharging waste to a storm drain?
Arc Flash PPE Selection
I’ve been hearing a lot about arc flash protection lately, but I’m not sure if it applies to our operation and, if so, what the requirements are for providing personal protective equipment under this standard. I know it has something to do with our ...
Am I a DOT Hazmat Transporter?
I have heard through the grapevine that the U.S. Department of Transportation has inspected one of our competitors regarding hazardous materials registration requirements. Can you give this small metal finishing shop owner an overview on how this wo...