Pollution Control
Above-Ground Storage Tanks
We are considering switching from receiving our muriatic (hydrochloric) acid, sulfuric acid, caustic and alkaline cleaners in drums or totes to dedicated bulk tanks. Before doing so, we want to know what regulations would apply to aboveground storage tanks for these chemicals in order to account for any regulatory compliance costs?
Read MoreANSI Standard Enforceablility
Can an OSHA inspector write a citation based on non-compliance with an ANSI standard?
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Small Particles, Big Benefits
Combining 100% solids UV-curable coatings with nanotechnology can result in substantial cost savings and other advantages
Read MoreZinc Alloy Plating Affecting Wastewater Treatment Sludge Revisted
Is the filter press sludge hazardous even if it doesn’t exceed TCLP requirements? Are any of these processes considered hazardous because we process aluminum? How about the polishing filters after the clarifier?
Read MoreIndustrial Storm Water Permit
We store all of our materials either inside the plant or in our rear warehouse. Upon review of the last several years of sampling data, it looks like our storm water is pretty clean. In our permit there is some language regarding “no exposure” exemption. Would we be able to qualify for this exemption? How do we get it?
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The Clear Alternative to Traditional Yellow Hex Films
Chromate conversion coatings on aluminum were implemented initially in 1950 when Allied Research and Rheem Manufacturing used technology based on hexavalent chromium to provide protective chemical films on the metal substrate.
Read MoreCan Wastewater from Scrubber Drain to Sewer?
Due to a huge increase in production of our aluminum products, we are evaluating the installation of an anodize line into our plant in order to anodize the parts in house instead of shipping parts off-site. Currently, we do not have any process wastewater discharges to the sewer. However, the scrubber water overflow does go to drain. Because this flow is very small, probably less than 100 gallons per day, the supplier says that this scrubber water can be discharged to the sewer “with no problem.”
Read MoreSwitching from Lime to Magnesium Hydroxide
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.
Read MoreDifficulty in Getting Required Permits
How difficult is it to get the required wastewater permits for our discharge? How long does this permitting usually take? Can we start installation of equipment before permits are issued?
Read MorePhosphating on Differing Surfaces
Question: Is a smooth surface better for phosphating or a rough one?
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