Precipitating Metals – Removes dissolved toxic metals from process wastewaters by converting ionic metals to an insoluble particle through a chemical reaction between a soluble metal compounds and a precipitating reagent.
Generally each of these formulations can be fed with or without pH adjustment to precipitate a wide variety of metals either instantaneously or after a 30 minutes of quiescence. You should bench test each of our formulations on your substrate on your bench and call us with the testing results so that we may help evaluate the treatment modality. Please note that our precipitants will react effectively with hexavalent chrome without reduction to trivalent chrome. Using these precipitants is one method to remove heavy metals from solutions and waste streams.
The second method of precipitating metals is the flocculation process in which you raise the pH of the stream or bath to about 10.0 after you have reduced hexavalent chrome to trivalent chrome with a reducing agent such as sulfite. Then one applies a dose from 10 to 20 ppm of a Tramfloc® 100 Series Flocculant. The flocculation method is usually extremely effective. If adjusting pH is not an issue in your application, then the flocculation method flocculation method should be considered. If, however, you would like to avoid an additional reagent such as an NaOH, KOH or Ca(OH)2, then perform your bench testing with our samples for precipitating metals.
As always, message or call us with any questions about the simple bench testing procedure, product information, precipitating metals, application or proper product selection.