Exploring the: Water Zone
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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...
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...
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?
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...
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.
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.
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?
Does Discharge Need a Permit
We are planning to install an anodizing system at our facility.