VSEP recovers pigment and provides filtrate that exceeds discharge requirements

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Courtesy of New Logic Research, Inc.

New Logic International installed its Vibratory Shear Enhanced Processing (VSEP) system in October, 1997 at Dominion Colour, a major international inorganic pigment manufacturing facility in Canada. VSEP is used for treatment of a chromate batch solution at this facility. The VSEP system uses an ultrafiltration membrane module to treat pressate from the filter press operation in order to recover pigments and also generate a permeate stream that meets the required discharge limits. The estimated construction, operation, and maintenance costs for this system are presented. The application of VSEP membrane technology to inorganic pigment manufacturing facilities is found to be an attractive economic alternative to conventional wastewater treatment technology.

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