The Silverback® is designed to continuously purify aqueous cleaner baths by utilizing a ceramic microfiltration/ultrafiltration membrane in a crossflow mode of operation. The membrane is impervious to nearly all chemicals except for phosphoric and hydrofluoric acids. Temperatures up to 200 degrees Fahrenheit can be tolerated.
Contaminated cleaner is pumped from the cleaning line to the Silverback® system. A feed valve, which is controlled by a level sensor, maintains a constant volume of cleaner in the process compartment. The contaminated cleaner is pumped through a bag filter and into a settling compartment where free oils and sludges are removed. From the middle of the settling compartment, the fluid flows into the process chamber. The solution is pumped through the membrane at a high recirculation rate. The contaminants are separated from the cleaner solution and concentrated. The purified cleaner solution flows back to the cleaner line.