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Exploring the: Policy and Legislation Zone
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- NON-HAZARDOUS FILTER PRESS CAKE
- Is it your understanding that filter press cake from a zinc or zinc cobalt plating line that uses trivelant chromates would be considered non-hazardous, and, therefore, could be disposed into our local sanitary landfill?
Ask an Expert Published: 11/1/2008
- Lowering Wastestream pH
- Is there a way to lower the pH of this highly alkaline wastestream without generating the NO2 ?
Ask an Expert Published: 7/1/2008
- Preparing for Inspection
- I have looked over our hazardous waste procedures and recordkeeping, and they look OK. Do you have any additional advice for us regarding this impending inspection?
Ask an Expert Published: 7/1/2008
- NITRATE TOXIC RELEASE REPORTING
- We use a significant amount of nitric acid, and I know nitric acid contains the nitrate ion. I checked past Form R reports, and we have been reporting nitric acid. I am concerned because I cannot find any backup calculations or explanations on where...
Ask an Expert Published: 5/1/2008
- PAINT BOOTH FILTER FOR VOCS?
- Recently, a sales representative told us that his company’s fiberglass paint booth filters reduce the amount of volatile organic compounds (VOCs) going up the stack by up to 75%. He claims that we could use a higher- VOC coating that’s less expensiv...
Ask an Expert Published: 5/1/2008
- WASTEWATER SAMPLING
- We have a small plating line and batch wastewater treatment system that are captive to our manufacturing operation. For many years, the city has allowed us to perform grab sampling from a sampling port on the side of our batch treatment tank for our...
Ask an Expert Published: 5/1/2008
- Neutralizing pH
- I am our facility’s environmental, health and safety manager. Periodically, we have very high-pH wastewaters that cause the pH within the cyanide oxidation step to be well above our desired upper limit of 11. Our operator has requested that we add s...
Ask an Expert Published: 3/1/2008
- Remove More Nox
- Do you have any ideas to reduce the yellow/brown color of air emissions from our nitric acid-based aluminum bright dip process?
Ask an Expert Published: 3/1/2008
- Evaporation Water Loss
- Do you know of any papers or charts that give water evaporation rates? We have an opportunity to reduce our cleaner tank temperature from 180 to 80°F and want to know how much water we can save.
Ask an Expert Published: 1/1/2008
- Maximize pH Sensor Performance
- Over the last several months, we have had difficulty with calibration of our pH sensors, particularly the pH adjustment sensor that controls pH in the range of 9.1– 9.5 for precipitation. Somehow the sensor still works well enough for us to achieve...
Ask an Expert Published: 1/1/2008