Exploring the: Water Zone

35 Results for: Experts

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Published: 1/11/2011

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...

Published: 1/11/2011

Do We Have a Large Load?
We have a captive metal finishing operation and are looking at a process that will have a waste stream with 10,000 ppm Chemical Oxygen Demand at an average flow rate of 4 gal/min that will be discharging into our city’s wastewater treatment facility...

Published: 1/10/2011

Iron Phosphate-Contaminated Rinsewater Disposal/Recycle
Could you provide us readers with some advice as to the potential to recycle or reuse our waste iron phosphate?

Published: 9/1/2010

Centrifugal Pump Versus Air-Operated Diaphragm Pump
We have an old wastewater pretreatment system for our metal finishing operation. The system contains two large air diaphragm pumps that transfer the wastewater from a holding tank to the flocculation tank before the clarifier. Since we are renovatin...

Published: 3/1/2010

Molybdenum Removal from Wastewater Revisited
I have been working for 15 years in the field of water treatment and the problem with molybdenum in wastewater is getting more and more prevalent. We’ve found the following treatment scheme to be successful.

Published: 1/1/2010

Remove that Bleach Smell
In our scrubber system for chlorination, we use caustic soda as the oxidation agent. This produces sodium hypochlorite, and unfortunately, sodium hypochlorite has an unpleasant smell.

Published: 1/1/2006

Difficulty 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?

Published: 11/1/2005

Wastewater Discharge Non-Compliance
Question: We operate a metal fabrication shop with our own five-stage iron phosphate washer.

Published: 11/1/2005

Wastewater Discharge—Cyanide Excursions
Question: Our plant is experiencing wastewater discharge permit excursions on its limits for Total Cyanide (daily maximum of 0.32 mg/liter, monthly average of 0.14 mg/liter) as regulated by our very small town.

Published: 9/1/2005

Non-Hazardous Waste has Become Hazardous
Question: We have a captive, acid zinc plating operation at our facility.