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Exploring the: Waste Management Zone
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- 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?
Ask an Expert Published: 2/22/2013
- Chrome Reduction
- What is the best way to reduce hexavalent chrome to trivalent chrome from an aluminum conversion coating rinse water?
Ask an Expert Published: 1/7/2013
- Nickel Recovery from Filter Press Cake
- Is the recovery of nickel metal from waste sludge considered recycling, reusing or reclaiming?
Ask an Expert Published: 1/2/2013
- 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...
Ask an Expert Published: 10/25/2012
- 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?
Ask an Expert Published: 9/6/2012
- Spent Hydrochloric Acid
- We make HCL drops out of our line and need to pump the spent acid to a holding tank. What is the best type of pump for this?
Ask an Expert Published: 1/23/2012
- Nitric Acid Passivation and EH&S Impact
- I am looking for safety/environmental requirements to set up a nitric acid cleaning and passivation system.
Ask an Expert Published: 8/15/2011
- Caustic Piping Remedies
- When I reviewed our operations, I was struck by how many of our PVC and CPVC piping joints that carried either caustic for wastewater pretreatment or alkaline cleaner exhibited a crusty scale, apparently dried caustic residue.
Ask an Expert Published: 5/1/2011
- Metals Recovery from Wastewater Treatment Sludge
- The sludge is green in color so we think it contains significant amount of nickel. Could we plate out the nickel?
Ask an Expert Published: 5/1/2011
- Phosphates in Wastewater
- I am charged with finding the sources of phosphorus in our plant. Our main process effluents are from mass finishing and washing machines. I have not found significant phosphorus in these fluids, and yet, we are close to the limit. What am I missing...
Ask an Expert Published: 1/11/2011